diff --git a/.DS_Store b/.DS_Store
index 59dfd6c4..de23f9c0 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/README.md b/README.md
index 4f3f8aa0..ae4b3deb 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
 | 둘째마당 02 | 레이아웃 | `진행 완료` | second/layout |
 | 둘째마당 03 | 기본위젯과 드로어블 | `진행 완료` | second/widget |
 | 둘째마당 04 | 화면 간 전환 | `진행 완료` | second/inflate |
-| 둘째마당 05 | 프래그먼트 | `진행 전` |
+| 둘째마당 05 | 프래그먼트 | `진행 전` | second/fragment |
 | 둘째마당 06 | 서비스와 수신자 | `진행 전` |
 | 둘째마당 07 | 선택위젯 만들기 | `진행 전` |
 | 둘째마당 08 | 애니메이션(참고) | `진행 전` |
diff --git a/second/.DS_Store b/second/.DS_Store
index 6ef06dd8..4a2e531e 100644
Binary files a/second/.DS_Store and b/second/.DS_Store differ
diff --git a/second/05_fragment/.DS_Store b/second/05_fragment/.DS_Store
new file mode 100644
index 00000000..cd0a37c6
Binary files /dev/null and b/second/05_fragment/.DS_Store differ
diff --git a/second/05_fragment/SampleActionBar1/.gitignore b/second/05_fragment/SampleActionBar1/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/05_fragment/SampleActionBar1/.idea/.gitignore b/second/05_fragment/SampleActionBar1/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/05_fragment/SampleActionBar1/.idea/compiler.xml b/second/05_fragment/SampleActionBar1/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/.idea/gradle.xml b/second/05_fragment/SampleActionBar1/.idea/gradle.xml
new file mode 100644
index 00000000..5cd135a0
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/.idea/gradle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/.idea/jarRepositories.xml b/second/05_fragment/SampleActionBar1/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/.idea/misc.xml b/second/05_fragment/SampleActionBar1/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/.idea/runConfigurations.xml b/second/05_fragment/SampleActionBar1/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/.idea/vcs.xml b/second/05_fragment/SampleActionBar1/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/.gitignore b/second/05_fragment/SampleActionBar1/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/build.gradle b/second/05_fragment/SampleActionBar1/app/build.gradle
new file mode 100644
index 00000000..293bc7a1
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.actionbar1"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.0'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/proguard-rules.pro b/second/05_fragment/SampleActionBar1/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/androidTest/java/com/example/actionbar1/ExampleInstrumentedTest.java b/second/05_fragment/SampleActionBar1/app/src/androidTest/java/com/example/actionbar1/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..5b7c3dee
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/androidTest/java/com/example/actionbar1/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.actionbar1;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.actionbar1", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/AndroidManifest.xml b/second/05_fragment/SampleActionBar1/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..a65d1d72
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.actionbar1">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleActionBar1">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/java/com/example/actionbar1/MainActivity.java b/second/05_fragment/SampleActionBar1/app/src/main/java/com/example/actionbar1/MainActivity.java
new file mode 100644
index 00000000..71c4a2bd
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/java/com/example/actionbar1/MainActivity.java
@@ -0,0 +1,58 @@
+package com.example.actionbar1;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.Button;
+import android.widget.Toast;
+
+public class MainActivity extends AppCompatActivity {
+    ActionBar abar;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        abar = getSupportActionBar();
+
+        Button button = findViewById(R.id.button);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                abar.setLogo(R.drawable.home);
+                abar.setDisplayOptions(ActionBar.DISPLAY_SHOW_HOME|ActionBar.DISPLAY_USE_LOGO);
+            }
+        });
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.menu_main, menu);
+        return super.onCreateOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        int curId = item.getItemId();
+        switch (curId) {
+            case R.id.menu_refresh:
+                Toast.makeText(this, "새로고침 메뉴가 선택되었습니다. ", Toast.LENGTH_SHORT).show();
+                break;
+            case R.id.menu_search:
+                Toast.makeText(this, "검색 메뉴가 선택되었습니다. ", Toast.LENGTH_SHORT).show();
+                break;
+            case R.id.menu_settings:
+                Toast.makeText(this, "설정 메뉴가 선택되었습니다. ", Toast.LENGTH_SHORT).show();
+                break;
+            default:
+                break;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/drawable-v24/home.png b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable-v24/home.png
new file mode 100644
index 00000000..7f4fe6fe
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable-v24/home.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/ic_launcher_background.xml b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/menu_refresh.png b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/menu_refresh.png
new file mode 100644
index 00000000..6a3c7c86
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/menu_refresh.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/menu_search.png b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/menu_search.png
new file mode 100644
index 00000000..3a7a7322
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/menu_search.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/menu_settings.png b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/menu_settings.png
new file mode 100644
index 00000000..7f265284
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/drawable/menu_settings.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/layout/activity_main.xml b/second/05_fragment/SampleActionBar1/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..f2828d88
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        android:textSize="30sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="26dp"
+        android:text="액션바 아이콘 바꾸기"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/textView" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/menu/menu_main.xml b/second/05_fragment/SampleActionBar1/app/src/main/res/menu/menu_main.xml
new file mode 100644
index 00000000..2431bedb
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/res/menu/menu_main.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item android:id="@+id/menu_refresh"
+        android:title="새로고침"
+        android:icon="@drawable/menu_refresh"
+        app:showAsAction="always"/>
+    <item
+        android:id="@+id/menu_search"
+        android:title="검색"
+        android:icon="@drawable/menu_search"
+        app:showAsAction="always|withText"
+        />
+    <item
+        android:id="@+id/menu_settings"
+        android:title="설정"
+        android:icon="@drawable/menu_settings"
+        app:showAsAction="never"
+        />
+
+</menu>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/values-night/themes.xml b/second/05_fragment/SampleActionBar1/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..4131cd76
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleActionBar1" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/values/colors.xml b/second/05_fragment/SampleActionBar1/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/values/strings.xml b/second/05_fragment/SampleActionBar1/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..a60063d0
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleActionBar1</string>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/main/res/values/themes.xml b/second/05_fragment/SampleActionBar1/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..a7ac5c88
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleActionBar1" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/app/src/test/java/com/example/actionbar1/ExampleUnitTest.java b/second/05_fragment/SampleActionBar1/app/src/test/java/com/example/actionbar1/ExampleUnitTest.java
new file mode 100644
index 00000000..8046a2f5
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/app/src/test/java/com/example/actionbar1/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.actionbar1;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/build.gradle b/second/05_fragment/SampleActionBar1/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/gradle.properties b/second/05_fragment/SampleActionBar1/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar1/gradle/wrapper/gradle-wrapper.jar b/second/05_fragment/SampleActionBar1/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/05_fragment/SampleActionBar1/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/05_fragment/SampleActionBar1/gradle/wrapper/gradle-wrapper.properties b/second/05_fragment/SampleActionBar1/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..b68ecdf5
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Tue Jul 27 01:56:20 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/05_fragment/SampleActionBar1/gradlew b/second/05_fragment/SampleActionBar1/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/05_fragment/SampleActionBar1/gradlew.bat b/second/05_fragment/SampleActionBar1/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/05_fragment/SampleActionBar1/settings.gradle b/second/05_fragment/SampleActionBar1/settings.gradle
new file mode 100644
index 00000000..b8d95bee
--- /dev/null
+++ b/second/05_fragment/SampleActionBar1/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleActionBar1"
+include ':app'
diff --git a/second/05_fragment/SampleActionBar2/.gitignore b/second/05_fragment/SampleActionBar2/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/05_fragment/SampleActionBar2/.idea/.gitignore b/second/05_fragment/SampleActionBar2/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/05_fragment/SampleActionBar2/.idea/compiler.xml b/second/05_fragment/SampleActionBar2/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/.idea/gradle.xml b/second/05_fragment/SampleActionBar2/.idea/gradle.xml
new file mode 100644
index 00000000..5cd135a0
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/.idea/gradle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/.idea/jarRepositories.xml b/second/05_fragment/SampleActionBar2/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/.idea/misc.xml b/second/05_fragment/SampleActionBar2/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/.idea/runConfigurations.xml b/second/05_fragment/SampleActionBar2/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/.idea/vcs.xml b/second/05_fragment/SampleActionBar2/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/.gitignore b/second/05_fragment/SampleActionBar2/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/build.gradle b/second/05_fragment/SampleActionBar2/app/build.gradle
new file mode 100644
index 00000000..d37bced9
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.sampleactionbar2"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/proguard-rules.pro b/second/05_fragment/SampleActionBar2/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/androidTest/java/com/example/sampleactionbar2/ExampleInstrumentedTest.java b/second/05_fragment/SampleActionBar2/app/src/androidTest/java/com/example/sampleactionbar2/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..004ab167
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/androidTest/java/com/example/sampleactionbar2/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.sampleactionbar2;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.sampleactionbar2", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/AndroidManifest.xml b/second/05_fragment/SampleActionBar2/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..498de7d9
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.sampleactionbar2">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleActionBar2">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/java/com/example/sampleactionbar2/MainActivity.java b/second/05_fragment/SampleActionBar2/app/src/main/java/com/example/sampleactionbar2/MainActivity.java
new file mode 100644
index 00000000..23bbd3c6
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/java/com/example/sampleactionbar2/MainActivity.java
@@ -0,0 +1,41 @@
+package com.example.sampleactionbar2;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.KeyEvent;
+import android.view.Menu;
+import android.view.View;
+import android.widget.EditText;
+import android.widget.TextView;
+import android.widget.Toast;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.menu_main, menu);
+
+        View v = menu.findItem(R.id.menu_search).getActionView();
+        if (v != null) {
+            EditText editText = v.findViewById(R.id.editText);
+
+            if (editText != null) {
+                editText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
+                    @Override
+                    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
+                        Toast.makeText(getApplicationContext(), "입력됨.", Toast.LENGTH_LONG).show();
+                        return true;
+                    }
+                });
+            }
+        }
+        return true;
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/back.png b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/back.png
new file mode 100644
index 00000000..1b9df981
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/back.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/home.png b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/home.png
new file mode 100644
index 00000000..7f4fe6fe
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/home.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/ic_launcher_background.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/menu_refresh.png b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/menu_refresh.png
new file mode 100644
index 00000000..6a3c7c86
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/menu_refresh.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/menu_search.png b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/menu_search.png
new file mode 100644
index 00000000..3a7a7322
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/menu_search.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/menu_settings.png b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/menu_settings.png
new file mode 100644
index 00000000..7f265284
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/drawable/menu_settings.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/layout/activity_main.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..4fc24441
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/layout/search_layout.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/layout/search_layout.xml
new file mode 100644
index 00000000..25b24beb
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/layout/search_layout.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="horizontal"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+    <TextView
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="검색: "
+        android:textSize="16sp"
+        android:textColor="#ffad8745"/>
+
+    <EditText
+        android:id="@+id/editText"
+        android:layout_width="100dp"
+        android:layout_height="wrap_content"
+        android:layout_marginLeft="4dp"
+        android:inputType="text"
+        android:imeActionId="1337"
+        android:imeOptions="actionDone"/>
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/menu/menu_main.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/menu/menu_main.xml
new file mode 100644
index 00000000..0217ea2e
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/menu/menu_main.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/menu_refresh"
+        android:title="새로고침"
+        android:icon="@drawable/menu_refresh"
+        app:showAsAction="always"/>
+    <item
+        android:id="@+id/menu_search"
+        android:title="검색"
+        android:orderInCategory="102"
+        app:showAsAction="always|withText"
+        android:actionLayout="@layout/search_layout"
+        />
+    <item
+        android:id="@+id/menu_settings"
+        android:title="설정"
+        android:icon="@drawable/menu_settings"
+        app:showAsAction="never"
+        />
+</menu>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/values-night/themes.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..a68814ac
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleActionBar2" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/values/colors.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/values/strings.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..18c10490
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleActionBar2</string>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/main/res/values/themes.xml b/second/05_fragment/SampleActionBar2/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..95f43845
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleActionBar2" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/app/src/test/java/com/example/sampleactionbar2/ExampleUnitTest.java b/second/05_fragment/SampleActionBar2/app/src/test/java/com/example/sampleactionbar2/ExampleUnitTest.java
new file mode 100644
index 00000000..1a2aca45
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/app/src/test/java/com/example/sampleactionbar2/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.sampleactionbar2;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/build.gradle b/second/05_fragment/SampleActionBar2/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/gradle.properties b/second/05_fragment/SampleActionBar2/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/05_fragment/SampleActionBar2/gradle/wrapper/gradle-wrapper.jar b/second/05_fragment/SampleActionBar2/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/05_fragment/SampleActionBar2/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/05_fragment/SampleActionBar2/gradle/wrapper/gradle-wrapper.properties b/second/05_fragment/SampleActionBar2/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..1a8391d7
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Tue Jul 27 15:02:21 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/05_fragment/SampleActionBar2/gradlew b/second/05_fragment/SampleActionBar2/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/05_fragment/SampleActionBar2/gradlew.bat b/second/05_fragment/SampleActionBar2/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/05_fragment/SampleActionBar2/settings.gradle b/second/05_fragment/SampleActionBar2/settings.gradle
new file mode 100644
index 00000000..f8810e96
--- /dev/null
+++ b/second/05_fragment/SampleActionBar2/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleActionBar2"
+include ':app'
diff --git a/second/05_fragment/SampleFragment/.gitignore b/second/05_fragment/SampleFragment/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/05_fragment/SampleFragment/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/05_fragment/SampleFragment/.idea/.gitignore b/second/05_fragment/SampleFragment/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/05_fragment/SampleFragment/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/05_fragment/SampleFragment/.idea/compiler.xml b/second/05_fragment/SampleFragment/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/05_fragment/SampleFragment/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/.idea/gradle.xml b/second/05_fragment/SampleFragment/.idea/gradle.xml
new file mode 100644
index 00000000..440480e5
--- /dev/null
+++ b/second/05_fragment/SampleFragment/.idea/gradle.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/.idea/jarRepositories.xml b/second/05_fragment/SampleFragment/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/05_fragment/SampleFragment/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/.idea/misc.xml b/second/05_fragment/SampleFragment/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/05_fragment/SampleFragment/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/.idea/runConfigurations.xml b/second/05_fragment/SampleFragment/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/05_fragment/SampleFragment/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/.idea/vcs.xml b/second/05_fragment/SampleFragment/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/05_fragment/SampleFragment/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/.gitignore b/second/05_fragment/SampleFragment/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/build.gradle b/second/05_fragment/SampleFragment/app/build.gradle
new file mode 100644
index 00000000..cf459ad3
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/build.gradle
@@ -0,0 +1,40 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.samplefragment"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.0'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/proguard-rules.pro b/second/05_fragment/SampleFragment/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/androidTest/java/com/example/samplefragment/ExampleInstrumentedTest.java b/second/05_fragment/SampleFragment/app/src/androidTest/java/com/example/samplefragment/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..2d9e4f43
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/androidTest/java/com/example/samplefragment/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.samplefragment;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.samplefragment", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/AndroidManifest.xml b/second/05_fragment/SampleFragment/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..ddb56297
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.samplefragment">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleFragment">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/java/com/example/samplefragment/MainActivity.java b/second/05_fragment/SampleFragment/app/src/main/java/com/example/samplefragment/MainActivity.java
new file mode 100644
index 00000000..2f53738b
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/java/com/example/samplefragment/MainActivity.java
@@ -0,0 +1,27 @@
+package com.example.samplefragment;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+
+public class MainActivity extends AppCompatActivity {
+    MainFragment mainFragment;
+    MenuFragment menuFragment;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        mainFragment = (MainFragment) getSupportFragmentManager().findFragmentById(R.id.mainFragment);
+        menuFragment = new MenuFragment();
+    }
+
+    public void onFragmentChanged(int index) {
+        if (index == 0) {
+            getSupportFragmentManager().beginTransaction().replace(R.id.container, menuFragment).commit();
+        } else if (index == 1) {
+            getSupportFragmentManager().beginTransaction().replace(R.id.container, mainFragment).commit();
+        }
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/java/com/example/samplefragment/MainFragment.java b/second/05_fragment/SampleFragment/app/src/main/java/com/example/samplefragment/MainFragment.java
new file mode 100644
index 00000000..22f23c87
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/java/com/example/samplefragment/MainFragment.java
@@ -0,0 +1,29 @@
+package com.example.samplefragment;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+
+public class MainFragment extends Fragment {
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_main, container, false);
+
+        Button button = rootView.findViewById(R.id.button);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                MainActivity activity = (MainActivity) getActivity();
+                activity.onFragmentChanged(0);
+            }
+        });
+        return rootView;
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/java/com/example/samplefragment/MenuFragment.java b/second/05_fragment/SampleFragment/app/src/main/java/com/example/samplefragment/MenuFragment.java
new file mode 100644
index 00000000..1490cf70
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/java/com/example/samplefragment/MenuFragment.java
@@ -0,0 +1,17 @@
+package com.example.samplefragment;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+
+public class MenuFragment extends Fragment {
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_menu, container, false);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/05_fragment/SampleFragment/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/drawable/ic_launcher_background.xml b/second/05_fragment/SampleFragment/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/layout/activity_main.xml b/second/05_fragment/SampleFragment/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..5fc551a9
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:id="@+id/container">
+
+    <fragment
+        android:id="@+id/mainFragment"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:name="com.example.samplefragment.MainFragment"/>
+
+</RelativeLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/layout/fragment_main.xml b/second/05_fragment/SampleFragment/app/src/main/res/layout/fragment_main.xml
new file mode 100644
index 00000000..20052770
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/layout/fragment_main.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainFragment"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="메인 프래그먼트"
+        android:textSize="30sp"/>
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="메뉴 화면으로" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/layout/fragment_menu.xml b/second/05_fragment/SampleFragment/app/src/main/res/layout/fragment_menu.xml
new file mode 100644
index 00000000..6032560f
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/layout/fragment_menu.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#D7C5F6"
+    android:orientation="vertical"
+    tools:context=".MainFragment">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="메뉴 프래그먼트"
+        android:textSize="30sp" />
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="메인 화면으로" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/05_fragment/SampleFragment/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/values-night/themes.xml b/second/05_fragment/SampleFragment/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..27a287bf
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleFragment" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/values/colors.xml b/second/05_fragment/SampleFragment/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/values/strings.xml b/second/05_fragment/SampleFragment/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..e21df315
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/values/strings.xml
@@ -0,0 +1,5 @@
+<resources>
+    <string name="app_name">SampleFragment</string>
+    <!-- TODO: Remove or change this placeholder text -->
+    <string name="hello_blank_fragment">Hello blank fragment</string>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/main/res/values/themes.xml b/second/05_fragment/SampleFragment/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..69c1120e
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleFragment" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/app/src/test/java/com/example/samplefragment/ExampleUnitTest.java b/second/05_fragment/SampleFragment/app/src/test/java/com/example/samplefragment/ExampleUnitTest.java
new file mode 100644
index 00000000..b8548eff
--- /dev/null
+++ b/second/05_fragment/SampleFragment/app/src/test/java/com/example/samplefragment/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.samplefragment;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/build.gradle b/second/05_fragment/SampleFragment/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/05_fragment/SampleFragment/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/gradle.properties b/second/05_fragment/SampleFragment/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/05_fragment/SampleFragment/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment/gradle/wrapper/gradle-wrapper.jar b/second/05_fragment/SampleFragment/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/05_fragment/SampleFragment/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/05_fragment/SampleFragment/gradle/wrapper/gradle-wrapper.properties b/second/05_fragment/SampleFragment/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..4acff45d
--- /dev/null
+++ b/second/05_fragment/SampleFragment/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Sun Jul 25 01:28:07 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/05_fragment/SampleFragment/gradlew b/second/05_fragment/SampleFragment/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/05_fragment/SampleFragment/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/05_fragment/SampleFragment/gradlew.bat b/second/05_fragment/SampleFragment/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/05_fragment/SampleFragment/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/05_fragment/SampleFragment/settings.gradle b/second/05_fragment/SampleFragment/settings.gradle
new file mode 100644
index 00000000..9fa2030a
--- /dev/null
+++ b/second/05_fragment/SampleFragment/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleFragment"
+include ':app'
diff --git a/second/05_fragment/SampleFragment2/.gitignore b/second/05_fragment/SampleFragment2/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/05_fragment/SampleFragment2/.idea/.gitignore b/second/05_fragment/SampleFragment2/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/05_fragment/SampleFragment2/.idea/compiler.xml b/second/05_fragment/SampleFragment2/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/.idea/gradle.xml b/second/05_fragment/SampleFragment2/.idea/gradle.xml
new file mode 100644
index 00000000..440480e5
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/.idea/gradle.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/.idea/jarRepositories.xml b/second/05_fragment/SampleFragment2/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/.idea/misc.xml b/second/05_fragment/SampleFragment2/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/.idea/runConfigurations.xml b/second/05_fragment/SampleFragment2/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/.idea/vcs.xml b/second/05_fragment/SampleFragment2/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/.gitignore b/second/05_fragment/SampleFragment2/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/build.gradle b/second/05_fragment/SampleFragment2/app/build.gradle
new file mode 100644
index 00000000..493652e2
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.samplefragment2"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.0'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/proguard-rules.pro b/second/05_fragment/SampleFragment2/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/androidTest/java/com/example/samplefragment2/ExampleInstrumentedTest.java b/second/05_fragment/SampleFragment2/app/src/androidTest/java/com/example/samplefragment2/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..bd3397e9
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/androidTest/java/com/example/samplefragment2/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.samplefragment2;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.samplefragment2", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/AndroidManifest.xml b/second/05_fragment/SampleFragment2/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..fb1fdd2e
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.samplefragment2">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleFragment2">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/java/com/example/samplefragment2/ListFragment.java b/second/05_fragment/SampleFragment2/app/src/main/java/com/example/samplefragment2/ListFragment.java
new file mode 100644
index 00000000..485311c0
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/java/com/example/samplefragment2/ListFragment.java
@@ -0,0 +1,68 @@
+package com.example.samplefragment2;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.Fragment;
+
+public class ListFragment extends Fragment {
+
+    public static interface ImageSelectionCallback {
+        public void onImageSelected(int position);
+    }
+
+    public ImageSelectionCallback callback;
+
+    @Override
+    public void onAttach(Context context) {
+        super.onAttach(context);
+
+        if (context instanceof ImageSelectionCallback) {
+            callback = (ImageSelectionCallback) context;
+        }
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_list, container, false);
+        Button button = rootView.findViewById(R.id.button);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (callback != null) {
+                    callback.onImageSelected(0);
+                }
+            }
+        });
+
+        Button button2 = rootView.findViewById(R.id.button2);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (callback != null) {
+                    callback.onImageSelected(1);
+                }
+            }
+        });
+
+        Button button3 = rootView.findViewById(R.id.button3);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                if (callback != null) {
+                    callback.onImageSelected(2);
+                }
+            }
+        });
+
+        return rootView;
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/java/com/example/samplefragment2/MainActivity.java b/second/05_fragment/SampleFragment2/app/src/main/java/com/example/samplefragment2/MainActivity.java
new file mode 100644
index 00000000..47483610
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/java/com/example/samplefragment2/MainActivity.java
@@ -0,0 +1,28 @@
+package com.example.samplefragment2;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.FragmentManager;
+
+import android.os.Bundle;
+
+public class MainActivity extends AppCompatActivity implements ListFragment.ImageSelectionCallback {
+    ListFragment listFragment;
+    ViewerFragment viewerFragment;
+
+    int[] images = {R.drawable.dream01, R.drawable.dream02, R.drawable.dream03};
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        FragmentManager manager = getSupportFragmentManager();
+        listFragment = (ListFragment) manager.findFragmentById(R.id.listFragment);
+        viewerFragment = (ViewerFragment) manager.findFragmentById(R.id.viewerFragment);
+    }
+
+    @Override
+    public void onImageSelected(int position) {
+        viewerFragment.setImage(images[position]);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/java/com/example/samplefragment2/ViewerFragment.java b/second/05_fragment/SampleFragment2/app/src/main/java/com/example/samplefragment2/ViewerFragment.java
new file mode 100644
index 00000000..430b94fb
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/java/com/example/samplefragment2/ViewerFragment.java
@@ -0,0 +1,29 @@
+package com.example.samplefragment2;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.Fragment;
+
+public class ViewerFragment extends Fragment {
+    ImageView imageView;
+
+    @Nullable
+    @Override
+    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_viewer, container, false);
+        imageView = rootView.findViewById(R.id.imageView);
+
+        return rootView;
+    }
+
+    public void setImage(int resId) {
+        imageView.setImageResource(resId);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/dream01.png b/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/dream01.png
new file mode 100644
index 00000000..e80d8ef1
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/dream01.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/dream02.png b/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/dream02.png
new file mode 100644
index 00000000..f8ba69bf
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/dream02.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/dream03.png b/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/dream03.png
new file mode 100644
index 00000000..e04e581e
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/dream03.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/drawable/ic_launcher_background.xml b/second/05_fragment/SampleFragment2/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/layout/activity_main.xml b/second/05_fragment/SampleFragment2/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..e4fe38dc
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity"
+    android:orientation="vertical">
+    <fragment
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="1"
+        android:name="com.example.samplefragment2.ListFragment"
+        android:id="@+id/listFragment"/>
+    <fragment
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="1"
+        android:name="com.example.samplefragment2.ViewerFragment"
+        android:id="@+id/viewerFragment"/>
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/layout/fragment_list.xml b/second/05_fragment/SampleFragment2/app/src/main/res/layout/fragment_list.xml
new file mode 100644
index 00000000..ac8e959b
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/layout/fragment_list.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="첫 번째 이미지" />
+
+    <Button
+        android:id="@+id/button2"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="두 번째 이미지" />
+
+    <Button
+        android:id="@+id/button3"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="세 번째 이미지" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/layout/fragment_viewer.xml b/second/05_fragment/SampleFragment2/app/src/main/res/layout/fragment_viewer.xml
new file mode 100644
index 00000000..bf788bda
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/layout/fragment_viewer.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <ImageView
+        android:id="@+id/imageView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:srcCompat="@drawable/dream01" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/05_fragment/SampleFragment2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/values-night/themes.xml b/second/05_fragment/SampleFragment2/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..cb03f49e
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleFragment2" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/values/colors.xml b/second/05_fragment/SampleFragment2/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/values/strings.xml b/second/05_fragment/SampleFragment2/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..56b1f96e
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleFragment2</string>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/main/res/values/themes.xml b/second/05_fragment/SampleFragment2/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..e47100fb
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleFragment2" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/app/src/test/java/com/example/samplefragment2/ExampleUnitTest.java b/second/05_fragment/SampleFragment2/app/src/test/java/com/example/samplefragment2/ExampleUnitTest.java
new file mode 100644
index 00000000..ede019f0
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/app/src/test/java/com/example/samplefragment2/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.samplefragment2;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/build.gradle b/second/05_fragment/SampleFragment2/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/gradle.properties b/second/05_fragment/SampleFragment2/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/05_fragment/SampleFragment2/gradle/wrapper/gradle-wrapper.jar b/second/05_fragment/SampleFragment2/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/05_fragment/SampleFragment2/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/05_fragment/SampleFragment2/gradle/wrapper/gradle-wrapper.properties b/second/05_fragment/SampleFragment2/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..a5c81e4d
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Mon Jul 26 19:56:26 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/05_fragment/SampleFragment2/gradlew b/second/05_fragment/SampleFragment2/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/05_fragment/SampleFragment2/gradlew.bat b/second/05_fragment/SampleFragment2/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/05_fragment/SampleFragment2/settings.gradle b/second/05_fragment/SampleFragment2/settings.gradle
new file mode 100644
index 00000000..93c2e547
--- /dev/null
+++ b/second/05_fragment/SampleFragment2/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleFragment2"
+include ':app'
diff --git a/second/05_fragment/SampleOptionMenu/.gitignore b/second/05_fragment/SampleOptionMenu/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/05_fragment/SampleOptionMenu/.idea/.gitignore b/second/05_fragment/SampleOptionMenu/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/05_fragment/SampleOptionMenu/.idea/compiler.xml b/second/05_fragment/SampleOptionMenu/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/.idea/gradle.xml b/second/05_fragment/SampleOptionMenu/.idea/gradle.xml
new file mode 100644
index 00000000..5cd135a0
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/.idea/gradle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/.idea/jarRepositories.xml b/second/05_fragment/SampleOptionMenu/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/.idea/misc.xml b/second/05_fragment/SampleOptionMenu/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/.idea/runConfigurations.xml b/second/05_fragment/SampleOptionMenu/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/.idea/vcs.xml b/second/05_fragment/SampleOptionMenu/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/.gitignore b/second/05_fragment/SampleOptionMenu/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/build.gradle b/second/05_fragment/SampleOptionMenu/app/build.gradle
new file mode 100644
index 00000000..1c8a68ec
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.optionmenu"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.0'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/proguard-rules.pro b/second/05_fragment/SampleOptionMenu/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/androidTest/java/com/example/optionmenu/ExampleInstrumentedTest.java b/second/05_fragment/SampleOptionMenu/app/src/androidTest/java/com/example/optionmenu/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..9b00b7f2
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/androidTest/java/com/example/optionmenu/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.optionmenu;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.optionmenu", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/AndroidManifest.xml b/second/05_fragment/SampleOptionMenu/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..7f3487ce
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.optionmenu">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleOptionMenu">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/java/com/example/optionmenu/MainActivity.java b/second/05_fragment/SampleOptionMenu/app/src/main/java/com/example/optionmenu/MainActivity.java
new file mode 100644
index 00000000..b011e046
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/java/com/example/optionmenu/MainActivity.java
@@ -0,0 +1,45 @@
+package com.example.optionmenu;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.widget.Button;
+import android.widget.Toast;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.menu_main, menu);
+        return super.onCreateOptionsMenu(menu);
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
+        int curId = item.getItemId();
+        switch (curId) {
+            case R.id.menu_refresh:
+                Toast.makeText(this, "새로고침 메뉴가 선택되었습니다. ", Toast.LENGTH_SHORT).show();
+                break;
+            case R.id.menu_search:
+                Toast.makeText(this, "검색 메뉴가 선택되었습니다. ", Toast.LENGTH_SHORT).show();
+                break;
+            case R.id.menu_settings:
+                Toast.makeText(this, "설정 메뉴가 선택되었습니다. ", Toast.LENGTH_SHORT).show();
+                break;
+            default:
+                break;
+        }
+        return super.onOptionsItemSelected(item);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/menu_refresh.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/menu_refresh.png
new file mode 100644
index 00000000..6a3c7c86
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/menu_refresh.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/menu_search.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/menu_search.png
new file mode 100644
index 00000000..3a7a7322
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/menu_search.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/menu_settings.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/menu_settings.png
new file mode 100644
index 00000000..7f265284
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable-v24/menu_settings.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable/ic_launcher_background.xml b/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/layout/activity_main.xml b/second/05_fragment/SampleOptionMenu/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..c21bda6c
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Hello World!"
+        android:textSize="30sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/menu/menu_main.xml b/second/05_fragment/SampleOptionMenu/app/src/main/res/menu/menu_main.xml
new file mode 100644
index 00000000..5d622383
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/res/menu/menu_main.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item android:id="@+id/menu_refresh"
+        android:title="새로고침"
+        android:icon="@drawable/menu_refresh"
+        app:showAsAction="always"/>
+    <item
+        android:id="@+id/menu_search"
+        android:title="검색"
+        android:icon="@drawable/menu_search"
+        app:showAsAction="always"
+        />
+    <item
+        android:id="@+id/menu_settings"
+        android:title="설정"
+        android:icon="@drawable/menu_settings"
+        app:showAsAction="always"
+        />
+
+</menu>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/values-night/themes.xml b/second/05_fragment/SampleOptionMenu/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..0121df5e
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleOptionMenu" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/values/colors.xml b/second/05_fragment/SampleOptionMenu/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/values/strings.xml b/second/05_fragment/SampleOptionMenu/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..35592dfd
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleOptionMenu</string>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/main/res/values/themes.xml b/second/05_fragment/SampleOptionMenu/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..81fc04a3
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleOptionMenu" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/app/src/test/java/com/example/optionmenu/ExampleUnitTest.java b/second/05_fragment/SampleOptionMenu/app/src/test/java/com/example/optionmenu/ExampleUnitTest.java
new file mode 100644
index 00000000..afdaa604
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/app/src/test/java/com/example/optionmenu/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.optionmenu;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/build.gradle b/second/05_fragment/SampleOptionMenu/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/gradle.properties b/second/05_fragment/SampleOptionMenu/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/05_fragment/SampleOptionMenu/gradle/wrapper/gradle-wrapper.jar b/second/05_fragment/SampleOptionMenu/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/05_fragment/SampleOptionMenu/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/05_fragment/SampleOptionMenu/gradle/wrapper/gradle-wrapper.properties b/second/05_fragment/SampleOptionMenu/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..67ca7954
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Mon Jul 26 21:00:32 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/05_fragment/SampleOptionMenu/gradlew b/second/05_fragment/SampleOptionMenu/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/05_fragment/SampleOptionMenu/gradlew.bat b/second/05_fragment/SampleOptionMenu/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/05_fragment/SampleOptionMenu/settings.gradle b/second/05_fragment/SampleOptionMenu/settings.gradle
new file mode 100644
index 00000000..32045709
--- /dev/null
+++ b/second/05_fragment/SampleOptionMenu/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleOptionMenu"
+include ':app'
diff --git a/second/05_fragment/SamplePager/.gitignore b/second/05_fragment/SamplePager/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/05_fragment/SamplePager/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/05_fragment/SamplePager/.idea/.gitignore b/second/05_fragment/SamplePager/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/05_fragment/SamplePager/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/05_fragment/SamplePager/.idea/compiler.xml b/second/05_fragment/SamplePager/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/05_fragment/SamplePager/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/.idea/gradle.xml b/second/05_fragment/SamplePager/.idea/gradle.xml
new file mode 100644
index 00000000..5cd135a0
--- /dev/null
+++ b/second/05_fragment/SamplePager/.idea/gradle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/.idea/jarRepositories.xml b/second/05_fragment/SamplePager/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/05_fragment/SamplePager/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/.idea/misc.xml b/second/05_fragment/SamplePager/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/05_fragment/SamplePager/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/.idea/runConfigurations.xml b/second/05_fragment/SamplePager/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/05_fragment/SamplePager/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/.idea/vcs.xml b/second/05_fragment/SamplePager/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/05_fragment/SamplePager/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/.gitignore b/second/05_fragment/SamplePager/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/build.gradle b/second/05_fragment/SamplePager/app/build.gradle
new file mode 100644
index 00000000..41b4029b
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.samplepager"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/proguard-rules.pro b/second/05_fragment/SamplePager/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/androidTest/java/com/example/samplepager/ExampleInstrumentedTest.java b/second/05_fragment/SamplePager/app/src/androidTest/java/com/example/samplepager/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..da7346a7
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/androidTest/java/com/example/samplepager/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.samplepager;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.samplepager", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/AndroidManifest.xml b/second/05_fragment/SamplePager/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..30d78118
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.samplepager">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SamplePager">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/Fragment1.java b/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/Fragment1.java
new file mode 100644
index 00000000..f413bc34
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/Fragment1.java
@@ -0,0 +1,15 @@
+package com.example.samplepager;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+
+public class Fragment1 extends Fragment {
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment1, container, false);
+    }
+}
diff --git a/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/Fragment2.java b/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/Fragment2.java
new file mode 100644
index 00000000..d5ea4364
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/Fragment2.java
@@ -0,0 +1,15 @@
+package com.example.samplepager;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+
+public class Fragment2 extends Fragment {
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment2, container, false);
+    }
+}
diff --git a/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/Fragment3.java b/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/Fragment3.java
new file mode 100644
index 00000000..0d29e8c9
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/Fragment3.java
@@ -0,0 +1,15 @@
+package com.example.samplepager;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+
+public class Fragment3 extends Fragment {
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment3, container, false);
+    }
+}
diff --git a/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/MainActivity.java b/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/MainActivity.java
new file mode 100644
index 00000000..759260fe
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/java/com/example/samplepager/MainActivity.java
@@ -0,0 +1,69 @@
+package com.example.samplepager;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentStatePagerAdapter;
+import androidx.viewpager.widget.ViewPager;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+import java.util.ArrayList;
+
+public class MainActivity extends AppCompatActivity {
+    ViewPager pager;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        Button button = findViewById(R.id.button);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                pager.setCurrentItem(1);
+            }
+        });
+
+        pager = findViewById(R.id.pager);
+        pager.setOffscreenPageLimit(3);
+
+        MyPagerAdapter adapter = new MyPagerAdapter(getSupportFragmentManager());
+
+        Fragment1 fragment1 = new Fragment1();
+        adapter.addItem(fragment1);
+
+        Fragment2 fragment2 = new Fragment2();
+        adapter.addItem(fragment2);
+
+        Fragment3 fragment3 = new Fragment3();
+        adapter.addItem(fragment3);
+
+        pager.setAdapter(adapter);
+    }
+
+    class MyPagerAdapter extends FragmentStatePagerAdapter {
+        ArrayList<Fragment> items = new ArrayList<Fragment>();
+        public MyPagerAdapter(FragmentManager fm) {
+            super(fm);
+        }
+
+        public void addItem(Fragment item) {
+            items.add(item);
+        }
+
+        @Override
+        public Fragment getItem(int position) {
+            return items.get(position);
+        }
+
+        @Override
+        public int getCount() {
+            return items.size();
+        }
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/05_fragment/SamplePager/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/drawable/ic_launcher_background.xml b/second/05_fragment/SamplePager/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/05_fragment/SamplePager/app/src/main/res/layout/activity_main.xml b/second/05_fragment/SamplePager/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..da1bf08e
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity"
+    android:orientation="vertical">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:text="두 번째 화면 보여주기" />
+
+    <androidx.viewpager2.widget.ViewPager2
+        android:id="@+id/pager"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_weight="1">
+    </androidx.viewpager2.widget.ViewPager2>
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/layout/fragment1.xml b/second/05_fragment/SamplePager/app/src/main/res/layout/fragment1.xml
new file mode 100644
index 00000000..e1dff3ee
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/layout/fragment1.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/purple_500">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="첫 번째" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/layout/fragment2.xml b/second/05_fragment/SamplePager/app/src/main/res/layout/fragment2.xml
new file mode 100644
index 00000000..e9b14e60
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/layout/fragment2.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/white">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="두 번째" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/layout/fragment3.xml b/second/05_fragment/SamplePager/app/src/main/res/layout/fragment3.xml
new file mode 100644
index 00000000..504160bb
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/layout/fragment3.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/black">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="세 번째" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/05_fragment/SamplePager/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/05_fragment/SamplePager/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/05_fragment/SamplePager/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/05_fragment/SamplePager/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/05_fragment/SamplePager/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/05_fragment/SamplePager/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/05_fragment/SamplePager/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/05_fragment/SamplePager/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/05_fragment/SamplePager/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/05_fragment/SamplePager/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/05_fragment/SamplePager/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SamplePager/app/src/main/res/values-night/themes.xml b/second/05_fragment/SamplePager/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..496d8904
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SamplePager" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/values/colors.xml b/second/05_fragment/SamplePager/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/values/strings.xml b/second/05_fragment/SamplePager/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..24325de2
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SamplePager</string>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/main/res/values/themes.xml b/second/05_fragment/SamplePager/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..0f8742fb
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SamplePager" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/app/src/test/java/com/example/samplepager/ExampleUnitTest.java b/second/05_fragment/SamplePager/app/src/test/java/com/example/samplepager/ExampleUnitTest.java
new file mode 100644
index 00000000..c6764b88
--- /dev/null
+++ b/second/05_fragment/SamplePager/app/src/test/java/com/example/samplepager/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.samplepager;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/build.gradle b/second/05_fragment/SamplePager/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/05_fragment/SamplePager/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/gradle.properties b/second/05_fragment/SamplePager/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/05_fragment/SamplePager/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/05_fragment/SamplePager/gradle/wrapper/gradle-wrapper.jar b/second/05_fragment/SamplePager/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/05_fragment/SamplePager/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/05_fragment/SamplePager/gradle/wrapper/gradle-wrapper.properties b/second/05_fragment/SamplePager/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..fcbd12f5
--- /dev/null
+++ b/second/05_fragment/SamplePager/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Jul 28 14:48:36 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/05_fragment/SamplePager/gradlew b/second/05_fragment/SamplePager/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/05_fragment/SamplePager/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/05_fragment/SamplePager/gradlew.bat b/second/05_fragment/SamplePager/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/05_fragment/SamplePager/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/05_fragment/SamplePager/settings.gradle b/second/05_fragment/SamplePager/settings.gradle
new file mode 100644
index 00000000..dd02d269
--- /dev/null
+++ b/second/05_fragment/SamplePager/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SamplePager"
+include ':app'
diff --git a/second/05_fragment/SampleTab/.gitignore b/second/05_fragment/SampleTab/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/05_fragment/SampleTab/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/05_fragment/SampleTab/.idea/.gitignore b/second/05_fragment/SampleTab/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/05_fragment/SampleTab/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/05_fragment/SampleTab/.idea/compiler.xml b/second/05_fragment/SampleTab/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/05_fragment/SampleTab/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/.idea/gradle.xml b/second/05_fragment/SampleTab/.idea/gradle.xml
new file mode 100644
index 00000000..5cd135a0
--- /dev/null
+++ b/second/05_fragment/SampleTab/.idea/gradle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/.idea/jarRepositories.xml b/second/05_fragment/SampleTab/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/05_fragment/SampleTab/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/.idea/misc.xml b/second/05_fragment/SampleTab/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/05_fragment/SampleTab/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/.idea/runConfigurations.xml b/second/05_fragment/SampleTab/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/05_fragment/SampleTab/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/.idea/vcs.xml b/second/05_fragment/SampleTab/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/05_fragment/SampleTab/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/.gitignore b/second/05_fragment/SampleTab/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/build.gradle b/second/05_fragment/SampleTab/app/build.gradle
new file mode 100644
index 00000000..ba94900d
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.tab"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/proguard-rules.pro b/second/05_fragment/SampleTab/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/androidTest/java/com/example/tab/ExampleInstrumentedTest.java b/second/05_fragment/SampleTab/app/src/androidTest/java/com/example/tab/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..dd13e7ae
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/androidTest/java/com/example/tab/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.tab;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.tab", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/AndroidManifest.xml b/second/05_fragment/SampleTab/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..8e1641ea
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.tab">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleTab">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/Fragment1.java b/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/Fragment1.java
new file mode 100644
index 00000000..aee85917
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/Fragment1.java
@@ -0,0 +1,17 @@
+package com.example.tab;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+
+public class Fragment1 extends Fragment {
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment1, container, false);
+    }
+}
diff --git a/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/Fragment2.java b/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/Fragment2.java
new file mode 100644
index 00000000..6eaf8cf3
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/Fragment2.java
@@ -0,0 +1,15 @@
+package com.example.tab;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+
+public class Fragment2 extends Fragment {
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment2, container, false);
+    }
+}
diff --git a/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/Fragment3.java b/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/Fragment3.java
new file mode 100644
index 00000000..99da7083
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/Fragment3.java
@@ -0,0 +1,15 @@
+package com.example.tab;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+
+public class Fragment3 extends Fragment {
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment3, container, false);
+    }
+}
diff --git a/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/MainActivity.java b/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/MainActivity.java
new file mode 100644
index 00000000..318aed20
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/java/com/example/tab/MainActivity.java
@@ -0,0 +1,70 @@
+package com.example.tab;
+
+import androidx.appcompat.app.ActionBar;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.appcompat.widget.Toolbar;
+import androidx.fragment.app.Fragment;
+
+import android.os.Bundle;
+import android.util.Log;
+
+import com.google.android.material.tabs.TabLayout;
+
+public class MainActivity extends AppCompatActivity {
+    Toolbar toolbar;
+
+    Fragment1 fragment1;
+    Fragment2 fragment2;
+    Fragment3 fragment3;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        toolbar = findViewById(R.id.toolbar);
+        setSupportActionBar(toolbar);
+
+        ActionBar actionBar = getSupportActionBar();
+        actionBar.setDisplayShowTitleEnabled(false);
+
+        fragment1 = new Fragment1();
+        fragment2 = new Fragment2();
+        fragment3 = new Fragment3();
+
+        getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment1).commit();
+
+        TabLayout tabs = findViewById(R.id.tabs);
+        tabs.addTab(tabs.newTab().setText("통화기록"));
+        tabs.addTab(tabs.newTab().setText("스팸기록"));
+        tabs.addTab(tabs.newTab().setText("연락처"));
+
+        tabs.addOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
+            @Override
+            public void onTabSelected(TabLayout.Tab tab) {
+                int position = tab.getPosition();
+                Log.d("MainActivity", "선택된 탭: " + position);
+                Fragment selected = null;
+                if (position == 0) {
+                    selected = fragment1;
+                } else if (position == 1) {
+                    selected = fragment2;
+                } else if (position == 2) {
+                    selected = fragment3;
+                }
+
+                getSupportFragmentManager().beginTransaction().replace(R.id.container, selected).commit();
+            }
+
+            @Override
+            public void onTabUnselected(TabLayout.Tab tab) {
+
+            }
+
+            @Override
+            public void onTabReselected(TabLayout.Tab tab) {
+
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/05_fragment/SampleTab/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/drawable/ic_launcher_background.xml b/second/05_fragment/SampleTab/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/05_fragment/SampleTab/app/src/main/res/layout/activity_main.xml b/second/05_fragment/SampleTab/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..44235254
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.coordinatorlayout.widget.CoordinatorLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
+        <com.google.android.material.appbar.AppBarLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:theme="@style/Theme.AppCompat.Light.DarkActionBar">
+
+            <androidx.appcompat.widget.Toolbar
+                android:id="@+id/toolbar"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@color/design_default_color_primary_dark"
+                android:elevation="1dp"
+                android:theme="@style/ThemeOverlay.AppCompat.Dark">
+
+                <TextView
+                    android:id="@+id/titleText"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="타이틀"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Widget.ActionBar.Title"/>
+            </androidx.appcompat.widget.Toolbar>
+
+            <com.google.android.material.tabs.TabLayout
+                android:id="@+id/tabs"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@android:color/background_light"
+                android:elevation="1dp"
+                app:tabGravity="fill"
+                app:tabMode="fixed"
+                app:tabSelectedTextColor="@color/design_default_color_primary_dark"
+                app:tabTextColor="@color/design_default_color_primary"/>
+        </com.google.android.material.appbar.AppBarLayout>
+
+        <FrameLayout
+            android:id="@+id/container"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            app:layout_behavior="@string/appbar_scrolling_view_behavior">
+
+        </FrameLayout>
+    </androidx.coordinatorlayout.widget.CoordinatorLayout>
+</RelativeLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/layout/fragment1.xml b/second/05_fragment/SampleTab/app/src/main/res/layout/fragment1.xml
new file mode 100644
index 00000000..e1dff3ee
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/layout/fragment1.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/purple_500">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="첫 번째" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/layout/fragment2.xml b/second/05_fragment/SampleTab/app/src/main/res/layout/fragment2.xml
new file mode 100644
index 00000000..e9b14e60
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/layout/fragment2.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/white">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="두 번째" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/layout/fragment3.xml b/second/05_fragment/SampleTab/app/src/main/res/layout/fragment3.xml
new file mode 100644
index 00000000..504160bb
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/layout/fragment3.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/black">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="세 번째" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/05_fragment/SampleTab/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/05_fragment/SampleTab/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/05_fragment/SampleTab/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/05_fragment/SampleTab/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/05_fragment/SampleTab/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/05_fragment/SampleTab/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/05_fragment/SampleTab/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/05_fragment/SampleTab/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/05_fragment/SampleTab/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/05_fragment/SampleTab/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/05_fragment/SampleTab/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleTab/app/src/main/res/values-night/themes.xml b/second/05_fragment/SampleTab/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..04351cbe
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleTab" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/values/colors.xml b/second/05_fragment/SampleTab/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/values/strings.xml b/second/05_fragment/SampleTab/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..dfeaf515
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleTab</string>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/main/res/values/themes.xml b/second/05_fragment/SampleTab/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..684f6682
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleTab" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/app/src/test/java/com/example/tab/ExampleUnitTest.java b/second/05_fragment/SampleTab/app/src/test/java/com/example/tab/ExampleUnitTest.java
new file mode 100644
index 00000000..f904e19d
--- /dev/null
+++ b/second/05_fragment/SampleTab/app/src/test/java/com/example/tab/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.tab;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/build.gradle b/second/05_fragment/SampleTab/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/05_fragment/SampleTab/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/gradle.properties b/second/05_fragment/SampleTab/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/05_fragment/SampleTab/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab/gradle/wrapper/gradle-wrapper.jar b/second/05_fragment/SampleTab/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/05_fragment/SampleTab/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/05_fragment/SampleTab/gradle/wrapper/gradle-wrapper.properties b/second/05_fragment/SampleTab/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..2e04409a
--- /dev/null
+++ b/second/05_fragment/SampleTab/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Tue Jul 27 15:54:09 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/05_fragment/SampleTab/gradlew b/second/05_fragment/SampleTab/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/05_fragment/SampleTab/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/05_fragment/SampleTab/gradlew.bat b/second/05_fragment/SampleTab/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/05_fragment/SampleTab/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/05_fragment/SampleTab/settings.gradle b/second/05_fragment/SampleTab/settings.gradle
new file mode 100644
index 00000000..db2f0548
--- /dev/null
+++ b/second/05_fragment/SampleTab/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleTab"
+include ':app'
diff --git a/second/05_fragment/SampleTab2/.gitignore b/second/05_fragment/SampleTab2/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/05_fragment/SampleTab2/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/05_fragment/SampleTab2/.idea/.gitignore b/second/05_fragment/SampleTab2/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/05_fragment/SampleTab2/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/05_fragment/SampleTab2/.idea/compiler.xml b/second/05_fragment/SampleTab2/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/05_fragment/SampleTab2/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/.idea/gradle.xml b/second/05_fragment/SampleTab2/.idea/gradle.xml
new file mode 100644
index 00000000..5cd135a0
--- /dev/null
+++ b/second/05_fragment/SampleTab2/.idea/gradle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/.idea/jarRepositories.xml b/second/05_fragment/SampleTab2/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/05_fragment/SampleTab2/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/.idea/misc.xml b/second/05_fragment/SampleTab2/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/05_fragment/SampleTab2/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/.idea/runConfigurations.xml b/second/05_fragment/SampleTab2/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/05_fragment/SampleTab2/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/.idea/vcs.xml b/second/05_fragment/SampleTab2/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/05_fragment/SampleTab2/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/.gitignore b/second/05_fragment/SampleTab2/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/build.gradle b/second/05_fragment/SampleTab2/app/build.gradle
new file mode 100644
index 00000000..d76f4bd1
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.tab2"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/proguard-rules.pro b/second/05_fragment/SampleTab2/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/androidTest/java/com/example/tab2/ExampleInstrumentedTest.java b/second/05_fragment/SampleTab2/app/src/androidTest/java/com/example/tab2/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..29ed50d5
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/androidTest/java/com/example/tab2/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.tab2;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.tab2", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/AndroidManifest.xml b/second/05_fragment/SampleTab2/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..7600b81c
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.tab2">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleTab2">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/Fragment1.java b/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/Fragment1.java
new file mode 100644
index 00000000..0c6fc561
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/Fragment1.java
@@ -0,0 +1,15 @@
+package com.example.tab2;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+
+public class Fragment1 extends Fragment {
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment1, container, false);
+    }
+}
diff --git a/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/Fragment2.java b/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/Fragment2.java
new file mode 100644
index 00000000..73b61f53
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/Fragment2.java
@@ -0,0 +1,15 @@
+package com.example.tab2;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+
+public class Fragment2 extends Fragment {
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment2, container, false);
+    }
+}
diff --git a/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/Fragment3.java b/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/Fragment3.java
new file mode 100644
index 00000000..e2c87451
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/Fragment3.java
@@ -0,0 +1,15 @@
+package com.example.tab2;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.fragment.app.Fragment;
+
+public class Fragment3 extends Fragment {
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment3, container, false);
+    }
+}
diff --git a/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/MainActivity.java b/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/MainActivity.java
new file mode 100644
index 00000000..60c8771f
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/java/com/example/tab2/MainActivity.java
@@ -0,0 +1,57 @@
+package com.example.tab2;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.MenuItem;
+import android.widget.Toast;
+
+import com.google.android.material.bottomnavigation.BottomNavigationView;
+
+public class MainActivity extends AppCompatActivity {
+    Fragment1 fragment1;
+    Fragment2 fragment2;
+    Fragment3 fragment3;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        fragment1 = new Fragment1();
+        fragment2 = new Fragment2();
+        fragment3 = new Fragment3();
+
+        getSupportFragmentManager().beginTransaction().replace(R.id.container, fragment1).commit();
+
+        BottomNavigationView bottomNavigation = findViewById(R.id.bottom_navigation);
+        bottomNavigation.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
+            @Override
+            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
+                switch (item.getItemId()) {
+                    case R.id.tab1:
+                        Toast.makeText(getApplicationContext(), "첫 번째 탭 선택됨", Toast.LENGTH_LONG).show();
+                        getSupportFragmentManager().beginTransaction()
+                                .replace(R.id.container, fragment1).commit();
+
+                        return true;
+                    case R.id.tab2:
+                        Toast.makeText(getApplicationContext(), "두 번째 탭 선택됨", Toast.LENGTH_LONG).show();
+                        getSupportFragmentManager().beginTransaction()
+                                .replace(R.id.container, fragment2).commit();
+
+                        return true;
+                    case R.id.tab3:
+                        Toast.makeText(getApplicationContext(), "세 번째 탭 선택됨", Toast.LENGTH_LONG).show();
+                        getSupportFragmentManager().beginTransaction()
+                                .replace(R.id.container, fragment3).commit();
+
+                        return true;
+                }
+
+                return false;
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/05_fragment/SampleTab2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/drawable/color.xml b/second/05_fragment/SampleTab2/app/src/main/res/drawable/color.xml
new file mode 100644
index 00000000..43171baf
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/drawable/color.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_checked="true" android:color="#51032d" />
+    <item android:color="#CFD8DC"  />
+</selector>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/drawable/ic_launcher_background.xml b/second/05_fragment/SampleTab2/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/layout/activity_main.xml b/second/05_fragment/SampleTab2/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..ef7fe456
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+    <FrameLayout
+        android:id="@+id/container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior"/>
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/bottom_navigation"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginEnd="0dp"
+        android:layout_marginStart="0dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:itemBackground="@color/design_default_color_primary"
+        app:itemIconTint="@drawable/item_color"
+        app:itemTextColor="@drawable/item_color"
+        app:menu="@menu/menu_bottom"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/layout/fragment1.xml b/second/05_fragment/SampleTab2/app/src/main/res/layout/fragment1.xml
new file mode 100644
index 00000000..e1dff3ee
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/layout/fragment1.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/purple_500">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="첫 번째" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/layout/fragment2.xml b/second/05_fragment/SampleTab2/app/src/main/res/layout/fragment2.xml
new file mode 100644
index 00000000..e9b14e60
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/layout/fragment2.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/white">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="두 번째" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/layout/fragment3.xml b/second/05_fragment/SampleTab2/app/src/main/res/layout/fragment3.xml
new file mode 100644
index 00000000..504160bb
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/layout/fragment3.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/black">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="세 번째" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/menu/menu_bottom.xml b/second/05_fragment/SampleTab2/app/src/main/res/menu/menu_bottom.xml
new file mode 100644
index 00000000..063f63cc
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/menu/menu_bottom.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/tab1"
+        app:showAsAction="ifRoom"
+        android:enabled="true"
+        android:icon="@android:drawable/ic_dialog_email"
+        android:title="이메일"
+        />
+    <item
+        android:id="@+id/tab2"
+        app:showAsAction="ifRoom"
+        android:icon="@android:drawable/ic_dialog_info"
+        android:title="정보"
+        />
+    <item
+        android:id="@+id/tab3"
+        app:showAsAction="ifRoom"
+        android:enabled="true"
+        android:icon="@android:drawable/ic_dialog_map"
+        android:title="위치"
+        />
+</menu>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/05_fragment/SampleTab2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/values-night/themes.xml b/second/05_fragment/SampleTab2/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..be20508a
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleTab2" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/values/colors.xml b/second/05_fragment/SampleTab2/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/values/refs.xml b/second/05_fragment/SampleTab2/app/src/main/res/values/refs.xml
new file mode 100644
index 00000000..45dd02bb
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/values/refs.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <drawable name="item_color" />
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/values/strings.xml b/second/05_fragment/SampleTab2/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..c53aaf44
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleTab2</string>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/main/res/values/themes.xml b/second/05_fragment/SampleTab2/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..e006cc59
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleTab2" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/app/src/test/java/com/example/tab2/ExampleUnitTest.java b/second/05_fragment/SampleTab2/app/src/test/java/com/example/tab2/ExampleUnitTest.java
new file mode 100644
index 00000000..6b9c469d
--- /dev/null
+++ b/second/05_fragment/SampleTab2/app/src/test/java/com/example/tab2/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.tab2;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/build.gradle b/second/05_fragment/SampleTab2/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/05_fragment/SampleTab2/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/gradle.properties b/second/05_fragment/SampleTab2/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/05_fragment/SampleTab2/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/05_fragment/SampleTab2/gradle/wrapper/gradle-wrapper.jar b/second/05_fragment/SampleTab2/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/05_fragment/SampleTab2/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/05_fragment/SampleTab2/gradle/wrapper/gradle-wrapper.properties b/second/05_fragment/SampleTab2/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..1d36d7c8
--- /dev/null
+++ b/second/05_fragment/SampleTab2/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Tue Jul 27 16:24:17 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/05_fragment/SampleTab2/gradlew b/second/05_fragment/SampleTab2/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/05_fragment/SampleTab2/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/05_fragment/SampleTab2/gradlew.bat b/second/05_fragment/SampleTab2/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/05_fragment/SampleTab2/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/05_fragment/SampleTab2/settings.gradle b/second/05_fragment/SampleTab2/settings.gradle
new file mode 100644
index 00000000..ea18996e
--- /dev/null
+++ b/second/05_fragment/SampleTab2/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleTab2"
+include ':app'
diff --git a/second/07_select/.DS_Store b/second/07_select/.DS_Store
new file mode 100644
index 00000000..c14e970b
Binary files /dev/null and b/second/07_select/.DS_Store differ
diff --git a/second/07_select/Mission/.DS_Store b/second/07_select/Mission/.DS_Store
new file mode 100644
index 00000000..dee456b3
Binary files /dev/null and b/second/07_select/Mission/.DS_Store differ
diff --git a/second/07_select/Mission/Mission13/.gitignore b/second/07_select/Mission/Mission13/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/07_select/Mission/Mission13/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/07_select/Mission/Mission13/.idea/.gitignore b/second/07_select/Mission/Mission13/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/07_select/Mission/Mission13/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/07_select/Mission/Mission13/.idea/compiler.xml b/second/07_select/Mission/Mission13/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/07_select/Mission/Mission13/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/.idea/gradle.xml b/second/07_select/Mission/Mission13/.idea/gradle.xml
new file mode 100644
index 00000000..440480e5
--- /dev/null
+++ b/second/07_select/Mission/Mission13/.idea/gradle.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/.idea/jarRepositories.xml b/second/07_select/Mission/Mission13/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/07_select/Mission/Mission13/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/.idea/misc.xml b/second/07_select/Mission/Mission13/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/07_select/Mission/Mission13/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/.idea/runConfigurations.xml b/second/07_select/Mission/Mission13/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/07_select/Mission/Mission13/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/.idea/vcs.xml b/second/07_select/Mission/Mission13/.idea/vcs.xml
new file mode 100644
index 00000000..4fce1d86
--- /dev/null
+++ b/second/07_select/Mission/Mission13/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/.gitignore b/second/07_select/Mission/Mission13/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/build.gradle b/second/07_select/Mission/Mission13/app/build.gradle
new file mode 100644
index 00000000..444eca18
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.mission13"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/proguard-rules.pro b/second/07_select/Mission/Mission13/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/androidTest/java/com/example/mission13/ExampleInstrumentedTest.java b/second/07_select/Mission/Mission13/app/src/androidTest/java/com/example/mission13/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..35312001
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/androidTest/java/com/example/mission13/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.mission13;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.mission13", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/AndroidManifest.xml b/second/07_select/Mission/Mission13/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..feb52ce6
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.mission13">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.Mission13">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/Customer.java b/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/Customer.java
new file mode 100644
index 00000000..78e78c41
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/Customer.java
@@ -0,0 +1,53 @@
+package com.example.mission13;
+
+public class Customer {
+    String name;
+    String birth;
+    String mobile;
+    int resId;
+
+    public Customer(String name, String birth, String mobile) {
+        this.name = name;
+        this.birth = birth;
+        this.mobile = mobile;
+    }
+
+    public Customer(String name, String birth, String mobile, int resId) {
+        this.name = name;
+        this.birth = birth;
+        this.mobile = mobile;
+        this.resId = resId;
+    }
+
+    public String getBirth() {
+        return birth;
+    }
+
+    public void setBirth(String birth) {
+        this.birth = birth;
+    }
+
+    public int getResId() {
+        return resId;
+    }
+
+    public void setResId(int resId) {
+        this.resId = resId;
+    }
+
+    public String getMobile() {
+        return mobile;
+    }
+
+    public void setMobile(String mobile) {
+        this.mobile = mobile;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+}
diff --git a/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/CustomerAdapter.java b/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/CustomerAdapter.java
new file mode 100644
index 00000000..9c37ad8b
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/CustomerAdapter.java
@@ -0,0 +1,99 @@
+package com.example.mission13;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+
+public class CustomerAdapter extends RecyclerView.Adapter<CustomerAdapter.ViewHolder>
+        implements OnCustomerItemClickListener {
+    ArrayList<Customer> items = new ArrayList<Customer>();
+
+    OnCustomerItemClickListener listener;
+
+    @Override
+    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());
+        View itemView = inflater.inflate(R.layout.customer_item, viewGroup, false);
+
+        return new ViewHolder(itemView, this);
+    }
+
+    @Override
+    public void onBindViewHolder(ViewHolder viewHolder, int position) {
+        Customer item = items.get(position);
+        viewHolder.setItem(item);
+    }
+
+    @Override
+    public int getItemCount() {
+        return items.size();
+    }
+
+    public void addItem(Customer item) {
+        items.add(item);
+    }
+
+    public void setItems(ArrayList<Customer> items) {
+        this.items = items;
+    }
+
+    public Customer getItem(int position) {
+        return items.get(position);
+    }
+
+    public void setItem(int position, Customer item) {
+        items.set(position, item);
+    }
+
+    public void setOnItemClickListener(OnCustomerItemClickListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    public void onItemClick(ViewHolder holder, View view, int position) {
+        if (listener != null) {
+            listener.onItemClick(holder, view, position);
+        }
+    }
+
+    static class ViewHolder extends RecyclerView.ViewHolder {
+        TextView textView;
+        TextView textView2;
+        TextView textView3;
+        ImageView imageView;
+
+        public ViewHolder(View itemView, final OnCustomerItemClickListener listener) {
+            super(itemView);
+
+            textView = itemView.findViewById(R.id.textView);
+            textView2 = itemView.findViewById(R.id.textView2);
+            textView3 = itemView.findViewById(R.id.textView3);
+            imageView = itemView.findViewById(R.id.imageView);
+
+            itemView.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    int position = getAdapterPosition();
+
+                    if (listener != null) {
+                        listener.onItemClick(ViewHolder.this, view, position);
+                    }
+                }
+            });
+        }
+
+        public void setItem(Customer item) {
+            textView.setText(item.getName());
+            textView2.setText(item.getBirth());
+            textView3.setText(item.getMobile());
+            imageView.setImageResource(item.getResId());
+        }
+
+    }
+}
diff --git a/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/MainActivity.java b/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/MainActivity.java
new file mode 100644
index 00000000..7f628dde
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/MainActivity.java
@@ -0,0 +1,75 @@
+package com.example.mission13;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.CursorAdapter;
+import android.widget.EditText;
+import android.widget.TextClock;
+import android.widget.TextView;
+import android.widget.Toast;
+
+public class MainActivity extends AppCompatActivity {
+    EditText editText;
+    EditText editText2;
+    EditText editText3;
+
+    TextView textView;
+
+    RecyclerView recyclerView;
+
+    CustomerAdapter adapter;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        editText = findViewById(R.id.nameInput);
+        editText2 = findViewById(R.id.dateInput);
+        editText3 = findViewById(R.id.numberInput);
+
+        textView = findViewById(R.id.textView);
+        textView.setText("2 명");
+
+        recyclerView = findViewById(R.id.recyclerView);
+
+        LinearLayoutManager layoutManager = new LinearLayoutManager(this);
+        recyclerView.setLayoutManager(layoutManager);
+
+        adapter = new CustomerAdapter();
+
+        adapter.addItem(new Customer("김준수", "1995-10-20", "010-1000-1000", R.drawable.customer));
+        adapter.addItem(new Customer("이희연", "1994-02-13", "010-2000-2000", R.drawable.customer));
+
+        recyclerView.setAdapter(adapter);
+
+        adapter.setOnItemClickListener(new OnCustomerItemClickListener() {
+            @Override
+            public void onItemClick(CustomerAdapter.ViewHolder holder, View view, int position) {
+                Customer item = adapter.getItem(position);
+
+                Toast.makeText(getApplicationContext(), "아이템 선택됨 : " + item.getName(), Toast.LENGTH_LONG).show();
+            }
+        });
+
+        Button button = findViewById(R.id.button);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                String name = editText.getText().toString();
+                String birth = editText2.getText().toString();
+                String mobile = editText3.getText().toString();
+
+                adapter.addItem(new Customer(name, birth, mobile, R.drawable.customer));
+                adapter.notifyDataSetChanged();
+
+                textView.setText(adapter.getItemCount() + " 명");
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/OnCustomerItemClickListener.java b/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/OnCustomerItemClickListener.java
new file mode 100644
index 00000000..a21973c3
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/java/com/example/mission13/OnCustomerItemClickListener.java
@@ -0,0 +1,7 @@
+package com.example.mission13;
+
+import android.view.View;
+
+public interface OnCustomerItemClickListener {
+    public void onItemClick(CustomerAdapter.ViewHolder holder, View view, int position);
+}
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/drawable-v24/customer.png b/second/07_select/Mission/Mission13/app/src/main/res/drawable-v24/customer.png
new file mode 100644
index 00000000..ade752ea
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/drawable-v24/customer.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/07_select/Mission/Mission13/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/drawable/ic_launcher_background.xml b/second/07_select/Mission/Mission13/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/layout/activity_main.xml b/second/07_select/Mission/Mission13/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..5f02c287
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,102 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <LinearLayout
+        android:id="@+id/linearLayout"
+        android:layout_width="409dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="16dp"
+        android:layout_marginLeft="16dp"
+        android:layout_marginTop="16dp"
+        android:layout_marginEnd="16dp"
+        android:layout_marginRight="16dp"
+        android:orientation="vertical"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <TextView
+                android:id="@+id/textView"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="3"
+                android:text="고객 정보 추가" />
+
+            <TextView
+                android:id="@+id/textView2"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="2명" />
+        </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:orientation="horizontal"
+            app:layout_constraintTop_toTopOf="parent">
+
+            <EditText
+                android:id="@+id/nameInput"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:ems="10"
+                android:hint="이름"
+                android:inputType="text"
+                android:text="" />
+
+            <EditText
+                android:id="@+id/dateInput"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:ems="10"
+                android:hint="생년월일"
+                android:inputType="date"
+                android:text="" />
+
+        </LinearLayout>
+
+        <EditText
+            android:id="@+id/numberInput"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:ems="10"
+            android:hint="전화번호"
+            android:inputType="phone"
+            android:text="" />
+
+    </LinearLayout>
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="추가"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/linearLayout" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerView"
+        android:layout_width="409dp"
+        android:layout_height="524dp"
+        android:layout_marginTop="16dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/button" />
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/layout/customer_item.xml b/second/07_select/Mission/Mission13/app/src/main/res/layout/customer_item.xml
new file mode 100644
index 00000000..cae75db8
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/res/layout/customer_item.xml
@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.cardview.widget.CardView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal"
+            android:layout_margin="8dp">
+
+            <ImageView
+                android:id="@+id/imageView"
+                android:layout_width="80dp"
+                android:layout_height="80dp"
+                android:src="@drawable/customer"/>
+            <LinearLayout
+                android:orientation="vertical"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:layout_marginLeft="16dp">
+
+                <TextView
+                    android:id="@+id/textView"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:text="Name"
+                    android:textSize="40sp"
+                    android:textStyle="bold"/>
+
+                <RelativeLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content">
+
+                    <TextView
+                        android:id="@+id/textView2"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_alignParentLeft="true"
+                        android:text="Birth"
+                        android:textSize="20sp"
+                        android:layout_marginTop="8dp"/>
+
+                    <TextView
+                        android:id="@+id/textView3"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_alignParentRight="true"
+                        android:text="Mobile"
+                        android:textSize="20sp"/>
+                </RelativeLayout>
+            </LinearLayout>
+        </LinearLayout>
+    </androidx.cardview.widget.CardView>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/07_select/Mission/Mission13/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/values-night/themes.xml b/second/07_select/Mission/Mission13/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..419ecb3c
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.Mission13" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/values/colors.xml b/second/07_select/Mission/Mission13/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/values/strings.xml b/second/07_select/Mission/Mission13/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..e9bff831
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Mission13</string>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/main/res/values/themes.xml b/second/07_select/Mission/Mission13/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..130b8cad
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.Mission13" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/app/src/test/java/com/example/mission13/ExampleUnitTest.java b/second/07_select/Mission/Mission13/app/src/test/java/com/example/mission13/ExampleUnitTest.java
new file mode 100644
index 00000000..a8e97707
--- /dev/null
+++ b/second/07_select/Mission/Mission13/app/src/test/java/com/example/mission13/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.mission13;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/build.gradle b/second/07_select/Mission/Mission13/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/07_select/Mission/Mission13/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/gradle.properties b/second/07_select/Mission/Mission13/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/07_select/Mission/Mission13/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission13/gradle/wrapper/gradle-wrapper.jar b/second/07_select/Mission/Mission13/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/07_select/Mission/Mission13/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/07_select/Mission/Mission13/gradle/wrapper/gradle-wrapper.properties b/second/07_select/Mission/Mission13/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..18ece11d
--- /dev/null
+++ b/second/07_select/Mission/Mission13/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Sat Aug 28 09:46:05 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/07_select/Mission/Mission13/gradlew b/second/07_select/Mission/Mission13/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/07_select/Mission/Mission13/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/07_select/Mission/Mission13/gradlew.bat b/second/07_select/Mission/Mission13/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/07_select/Mission/Mission13/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/07_select/Mission/Mission13/settings.gradle b/second/07_select/Mission/Mission13/settings.gradle
new file mode 100644
index 00000000..834dd245
--- /dev/null
+++ b/second/07_select/Mission/Mission13/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "Mission13"
+include ':app'
diff --git a/second/07_select/Mission/Mission14/.gitignore b/second/07_select/Mission/Mission14/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/07_select/Mission/Mission14/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/07_select/Mission/Mission14/.idea/.gitignore b/second/07_select/Mission/Mission14/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/07_select/Mission/Mission14/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/07_select/Mission/Mission14/.idea/compiler.xml b/second/07_select/Mission/Mission14/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/07_select/Mission/Mission14/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/.idea/gradle.xml b/second/07_select/Mission/Mission14/.idea/gradle.xml
new file mode 100644
index 00000000..440480e5
--- /dev/null
+++ b/second/07_select/Mission/Mission14/.idea/gradle.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/.idea/jarRepositories.xml b/second/07_select/Mission/Mission14/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/07_select/Mission/Mission14/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/.idea/misc.xml b/second/07_select/Mission/Mission14/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/07_select/Mission/Mission14/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/.idea/runConfigurations.xml b/second/07_select/Mission/Mission14/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/07_select/Mission/Mission14/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/.idea/vcs.xml b/second/07_select/Mission/Mission14/.idea/vcs.xml
new file mode 100644
index 00000000..4fce1d86
--- /dev/null
+++ b/second/07_select/Mission/Mission14/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/.gitignore b/second/07_select/Mission/Mission14/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/build.gradle b/second/07_select/Mission/Mission14/app/build.gradle
new file mode 100644
index 00000000..23784024
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.mission14"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/proguard-rules.pro b/second/07_select/Mission/Mission14/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/androidTest/java/com/example/mission14/ExampleInstrumentedTest.java b/second/07_select/Mission/Mission14/app/src/androidTest/java/com/example/mission14/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..775adde9
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/androidTest/java/com/example/mission14/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.mission14;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.mission14", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/AndroidManifest.xml b/second/07_select/Mission/Mission14/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..8f0349af
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.mission14">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.Mission14">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/MainActivity.java b/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/MainActivity.java
new file mode 100644
index 00000000..e3c15b15
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/MainActivity.java
@@ -0,0 +1,44 @@
+package com.example.mission14;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Toast;
+
+public class MainActivity extends AppCompatActivity {
+    RecyclerView recyclerView;
+    ProductAdapter adapter;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        recyclerView = findViewById(R.id.recyclerView);
+
+        GridLayoutManager layoutManager = new GridLayoutManager(this, 2);
+        recyclerView.setLayoutManager(layoutManager);
+
+
+        adapter = new ProductAdapter();
+
+        adapter.addItem(new Product("토끼털 코트", "리본", 7, 574770, R.drawable.clothes1));
+        adapter.addItem(new Product("어깨 패치 H라인 원피스", "헤지스레이디스", 19, 297580, R.drawable.clothes2));
+        adapter.addItem(new Product("그린체크 패턴 소매배색 긴팔 남방", "헤지스레이디스", 16, 144500, R.drawable.clothes3));
+        adapter.addItem(new Product("네이비 마드라스 체크 퍼피 남방", "헤지스레이디스", 16, 170150, R.drawable.clothes4));
+
+        recyclerView.setAdapter(adapter);
+
+        adapter.setOnItemClickListener(new OnProductItemClickListener() {
+            @Override
+            public void onItemClick(ProductAdapter.ViewHolder holder, View view, int position) {
+                Product item = adapter.getItem(position);
+                Toast.makeText(getApplicationContext(), "선택된 제품 : " + item.getName(), Toast.LENGTH_LONG).show();
+
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/OnProductItemClickListener.java b/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/OnProductItemClickListener.java
new file mode 100644
index 00000000..7d7fd76a
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/OnProductItemClickListener.java
@@ -0,0 +1,7 @@
+package com.example.mission14;
+
+import android.view.View;
+
+public interface OnProductItemClickListener {
+    public void onItemClick(ProductAdapter.ViewHolder holder, View view, int position);
+}
diff --git a/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/Product.java b/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/Product.java
new file mode 100644
index 00000000..2d29fb7a
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/Product.java
@@ -0,0 +1,61 @@
+package com.example.mission14;
+
+public class Product {
+    String name;
+    String manufacturer;
+    int countAgent;
+    int price;
+    int imageRes;
+
+    public Product() {
+
+    }
+
+    public Product(String name, String manufacturer, int countAgent, int price, int imageRes) {
+        this.name = name;
+        this.manufacturer = manufacturer;
+        this.countAgent = countAgent;
+        this.price = price;
+        this.imageRes = imageRes;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getManufacturer() {
+        return manufacturer;
+    }
+
+    public void setManufacturer(String manufacturer) {
+        this.manufacturer = manufacturer;
+    }
+
+    public int getCountAgent() {
+        return countAgent;
+    }
+
+    public void setCountAgent(int countAgent) {
+        this.countAgent = countAgent;
+    }
+
+    public int getPrice() {
+        return price;
+    }
+
+    public void setPrice(int price) {
+        this.price = price;
+    }
+
+    public int getImageRes() {
+        return imageRes;
+    }
+
+    public void setImageRes(int imageRes) {
+        this.imageRes = imageRes;
+    }
+}
diff --git a/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/ProductAdapter.java b/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/ProductAdapter.java
new file mode 100644
index 00000000..cc811767
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/java/com/example/mission14/ProductAdapter.java
@@ -0,0 +1,103 @@
+package com.example.mission14;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+
+public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.ViewHolder>
+        implements OnProductItemClickListener {
+    ArrayList<Product> items = new ArrayList<Product>();
+
+    OnProductItemClickListener listener;
+
+    @Override
+    public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());
+        View itemView = inflater.inflate(R.layout.shopping_item, viewGroup, false);
+
+        return new ViewHolder(itemView, this);
+    }
+
+    @Override
+    public void onBindViewHolder(ViewHolder viewHolder, int position) {
+        Product item = items.get(position);
+        viewHolder.setItem(item);
+    }
+
+    @Override
+    public int getItemCount() {
+        return items.size();
+    }
+
+    public void addItem(Product item) {
+        items.add(item);
+    }
+
+    public void setItems(ArrayList<Product> items) {
+        this.items = items;
+    }
+
+    public Product getItem(int position) {
+        return items.get(position);
+    }
+
+    public void setItem(int position, Product item) {
+        items.set(position, item);
+    }
+
+    public void setOnItemClickListener(OnProductItemClickListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    public void onItemClick(ViewHolder holder, View view, int position) {
+        if (listener != null) {
+            listener.onItemClick(holder, view, position);
+        }
+    }
+
+    static class ViewHolder extends RecyclerView.ViewHolder {
+        TextView textView1;
+        TextView textView2;
+        TextView textView3;
+        TextView textView4;
+
+        ImageView imageView1;
+
+        public ViewHolder(View itemView, final OnProductItemClickListener listener) {
+            super(itemView);
+
+            textView1 = itemView.findViewById(R.id.textView1);
+            textView2 = itemView.findViewById(R.id.textView2);
+            textView3 = itemView.findViewById(R.id.textView3);
+            textView4 = itemView.findViewById(R.id.textView4);
+
+            imageView1 = itemView.findViewById(R.id.imageView);
+
+            itemView.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    int position = getAdapterPosition();
+
+                    if (listener != null) {
+                        listener.onItemClick(ViewHolder.this, view, position);
+                    }
+                }
+            });
+        }
+
+        public void setItem(Product item) {
+            textView1.setText(String.valueOf(item.getCountAgent()));
+            textView2.setText(item.getName());
+            textView4.setText(String.valueOf(item.getPrice()));
+            imageView1.setImageResource(item.getImageRes());
+        }
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes1.jpg b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes1.jpg
new file mode 100644
index 00000000..f57f2e84
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes1.jpg differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes2.jpg b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes2.jpg
new file mode 100644
index 00000000..775ca9d0
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes2.jpg differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes3.jpg b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes3.jpg
new file mode 100644
index 00000000..16737bf3
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes3.jpg differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes4.jpg b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes4.jpg
new file mode 100644
index 00000000..6b198355
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/clothes4.jpg differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/customer.png b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/customer.png
new file mode 100644
index 00000000..ade752ea
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/customer.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/layout_background.9.png b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/layout_background.9.png
new file mode 100644
index 00000000..fb08c303
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/drawable-v24/layout_background.9.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/drawable/ic_launcher_background.xml b/second/07_select/Mission/Mission14/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/layout/activity_main.xml b/second/07_select/Mission/Mission14/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..17ff7d46
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"/>
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/layout/shopping_item.xml b/second/07_select/Mission/Mission14/app/src/main/res/layout/shopping_item.xml
new file mode 100644
index 00000000..58d70014
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/res/layout/shopping_item.xml
@@ -0,0 +1,93 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <androidx.cardview.widget.CardView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"
+            android:background="@drawable/layout_background"
+            android:padding="4dp">
+
+            <FrameLayout
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content">
+
+                <ImageView
+                    android:id="@+id/imageView"
+                    android:layout_width="wrap_content"
+                    android:layout_height="200dp"
+                    android:src="@drawable/clothes1"
+                    android:layout_gravity="center_horizontal"/>
+            </FrameLayout>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical">
+
+                <TextView
+                    android:id="@+id/textView1"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_gravity="right"
+                    android:textSize="12sp"/>
+
+                <TextView
+                    android:id="@+id/textView2"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:textSize="18sp"/>
+
+                <RelativeLayout
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:layout_margin="6dp"
+                    android:background="@drawable/layout_background">
+
+                    <TextView
+                        android:id="@+id/textView3"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_alignParentLeft="true"
+                        android:text="최저가"
+                        android:textSize="12sp"
+                        android:layout_centerVertical="true" />
+
+                    <TextView
+                        android:id="@+id/textView4"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_toLeftOf="@+id/textView5"
+                        android:textSize="20sp"
+                        android:textStyle="bold"
+                        android:layout_centerVertical="true" />
+
+                    <TextView
+                        android:id="@+id/textView5"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:paddingTop="2dp"
+                        android:paddingLeft="2dp"
+                        android:text="원"
+                        android:textSize="12sp"
+                        android:layout_marginRight="16dp"
+                        android:layout_marginEnd="16dp"
+                        android:layout_centerVertical="true"
+                        android:layout_alignParentRight="true"
+                        android:layout_alignParentEnd="true" />
+
+                </RelativeLayout>
+            </LinearLayout>
+        </LinearLayout>
+
+
+    </androidx.cardview.widget.CardView>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/07_select/Mission/Mission14/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/values-night/themes.xml b/second/07_select/Mission/Mission14/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..0a62e4e4
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.Mission14" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/values/colors.xml b/second/07_select/Mission/Mission14/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/values/strings.xml b/second/07_select/Mission/Mission14/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..374a294f
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Mission14</string>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/main/res/values/themes.xml b/second/07_select/Mission/Mission14/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..0673e55b
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.Mission14" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/app/src/test/java/com/example/mission14/ExampleUnitTest.java b/second/07_select/Mission/Mission14/app/src/test/java/com/example/mission14/ExampleUnitTest.java
new file mode 100644
index 00000000..3f3b7820
--- /dev/null
+++ b/second/07_select/Mission/Mission14/app/src/test/java/com/example/mission14/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.mission14;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/build.gradle b/second/07_select/Mission/Mission14/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/07_select/Mission/Mission14/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/gradle.properties b/second/07_select/Mission/Mission14/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/07_select/Mission/Mission14/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/07_select/Mission/Mission14/gradle/wrapper/gradle-wrapper.jar b/second/07_select/Mission/Mission14/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/07_select/Mission/Mission14/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/07_select/Mission/Mission14/gradle/wrapper/gradle-wrapper.properties b/second/07_select/Mission/Mission14/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..1af91873
--- /dev/null
+++ b/second/07_select/Mission/Mission14/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Sat Aug 28 10:17:02 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/07_select/Mission/Mission14/gradlew b/second/07_select/Mission/Mission14/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/07_select/Mission/Mission14/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/07_select/Mission/Mission14/gradlew.bat b/second/07_select/Mission/Mission14/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/07_select/Mission/Mission14/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/07_select/Mission/Mission14/settings.gradle b/second/07_select/Mission/Mission14/settings.gradle
new file mode 100644
index 00000000..05aca871
--- /dev/null
+++ b/second/07_select/Mission/Mission14/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "Mission14"
+include ':app'
diff --git a/second/07_select/SampleLayout/.gitignore b/second/07_select/SampleLayout/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/07_select/SampleLayout/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/07_select/SampleLayout/.idea/.gitignore b/second/07_select/SampleLayout/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/07_select/SampleLayout/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/07_select/SampleLayout/.idea/compiler.xml b/second/07_select/SampleLayout/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/07_select/SampleLayout/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/.idea/gradle.xml b/second/07_select/SampleLayout/.idea/gradle.xml
new file mode 100644
index 00000000..440480e5
--- /dev/null
+++ b/second/07_select/SampleLayout/.idea/gradle.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/.idea/jarRepositories.xml b/second/07_select/SampleLayout/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/07_select/SampleLayout/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/.idea/misc.xml b/second/07_select/SampleLayout/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/07_select/SampleLayout/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/.idea/runConfigurations.xml b/second/07_select/SampleLayout/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/07_select/SampleLayout/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/.idea/vcs.xml b/second/07_select/SampleLayout/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/07_select/SampleLayout/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/.gitignore b/second/07_select/SampleLayout/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/07_select/SampleLayout/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/build.gradle b/second/07_select/SampleLayout/app/build.gradle
new file mode 100644
index 00000000..ecea5e9e
--- /dev/null
+++ b/second/07_select/SampleLayout/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.layout"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/proguard-rules.pro b/second/07_select/SampleLayout/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/07_select/SampleLayout/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/androidTest/java/com/example/layout/ExampleInstrumentedTest.java b/second/07_select/SampleLayout/app/src/androidTest/java/com/example/layout/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..3b01074d
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/androidTest/java/com/example/layout/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.layout;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.layout", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/AndroidManifest.xml b/second/07_select/SampleLayout/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..13c92436
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.layout">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleLayout">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/java/com/example/layout/Layout1.java b/second/07_select/SampleLayout/app/src/main/java/com/example/layout/Layout1.java
new file mode 100644
index 00000000..47e2ad07
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/java/com/example/layout/Layout1.java
@@ -0,0 +1,47 @@
+package com.example.layout;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.widget.ImageView;
+import android.widget.LinearLayout;
+import android.widget.TextView;
+
+import androidx.annotation.Nullable;
+
+public class Layout1 extends LinearLayout {
+    ImageView imageView;
+    TextView textView;
+    TextView textView2;
+
+    public Layout1(Context context) {
+        super(context);
+        init(context);
+    }
+
+    public Layout1(Context context, @Nullable AttributeSet attrs) {
+        super(context, attrs);
+        init(context);
+    }
+
+    private void init(Context context) {
+        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+        inflater.inflate(R.layout.layout1, this, true);
+
+        imageView = findViewById(R.id.imageView);
+        textView = findViewById(R.id.textView);
+        textView2 = findViewById(R.id.textView2);
+    }
+
+    public void setImage(int resId) {
+        imageView.setImageResource(resId);
+    }
+
+    public void setName(String name) {
+        textView.setText(name);
+    }
+
+    public void setMobile(String mobile) {
+        textView2.setText(mobile);
+    }
+}
diff --git a/second/07_select/SampleLayout/app/src/main/java/com/example/layout/MainActivity.java b/second/07_select/SampleLayout/app/src/main/java/com/example/layout/MainActivity.java
new file mode 100644
index 00000000..893d0413
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/java/com/example/layout/MainActivity.java
@@ -0,0 +1,38 @@
+package com.example.layout;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+
+public class MainActivity extends AppCompatActivity {
+    Layout1 layout1;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        layout1 = findViewById(R.id.layout1);
+        layout1.setImage(R.drawable.profile1);
+        layout1.setName("홍길동");
+        layout1.setMobile("010-1234-1234");
+
+        Button button = findViewById(R.id.button);
+        button.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                layout1.setImage(R.drawable.profile1);
+            }
+        });
+
+        Button button2 = findViewById(R.id.button2);
+        button2.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                layout1.setImage(R.drawable.profile2);
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/07_select/SampleLayout/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/res/drawable/ic_launcher_background.xml b/second/07_select/SampleLayout/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/07_select/SampleLayout/app/src/main/res/drawable/profile1.png b/second/07_select/SampleLayout/app/src/main/res/drawable/profile1.png
new file mode 100644
index 00000000..1e2d55e5
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/drawable/profile1.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/drawable/profile2.png b/second/07_select/SampleLayout/app/src/main/res/drawable/profile2.png
new file mode 100644
index 00000000..54a64f88
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/drawable/profile2.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/layout/activity_main.xml b/second/07_select/SampleLayout/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..594d2fc9
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".MainActivity">
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="첫 번째 이미지" />
+
+    <Button
+        android:id="@+id/button2"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="두 번째 이미지" />
+
+    <com.example.layout.Layout1
+        android:id="@+id/layout1"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"/>
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/res/layout/layout1.xml b/second/07_select/SampleLayout/app/src/main/res/layout/layout1.xml
new file mode 100644
index 00000000..ad5480d7
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/res/layout/layout1.xml
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <androidx.cardview.widget.CardView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:cardBackgroundColor="#FFFFFFFF"
+        app:cardCornerRadius="10dp"
+        app:cardElevation="5dp"
+        app:cardUseCompatPadding="true">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <ImageView
+                android:id="@+id/imageView"
+                android:layout_width="80dp"
+                android:layout_height="80dp"
+                android:padding="5dp"
+                android:src="@mipmap/ic_launcher"/>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_margin="5dp"
+                android:layout_weight="1"
+                android:orientation="vertical">
+
+                <TextView
+                    android:id="@+id/textView"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:text="이름"
+                    android:textSize="30sp" />
+
+                <TextView
+                    android:id="@+id/textView2"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:text="전화번호"
+                    android:textColor="#FF0000FF"
+                    android:textSize="25sp" />
+            </LinearLayout>
+        </LinearLayout>
+
+    </androidx.cardview.widget.CardView>
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/07_select/SampleLayout/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/07_select/SampleLayout/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/07_select/SampleLayout/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/07_select/SampleLayout/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/07_select/SampleLayout/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/07_select/SampleLayout/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/07_select/SampleLayout/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/07_select/SampleLayout/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/07_select/SampleLayout/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/07_select/SampleLayout/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/07_select/SampleLayout/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/07_select/SampleLayout/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/07_select/SampleLayout/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleLayout/app/src/main/res/values-night/themes.xml b/second/07_select/SampleLayout/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..763d9233
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleLayout" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/res/values/colors.xml b/second/07_select/SampleLayout/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/res/values/strings.xml b/second/07_select/SampleLayout/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..b1a3b62d
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleLayout</string>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/main/res/values/themes.xml b/second/07_select/SampleLayout/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..6369531b
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleLayout" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/app/src/test/java/com/example/layout/ExampleUnitTest.java b/second/07_select/SampleLayout/app/src/test/java/com/example/layout/ExampleUnitTest.java
new file mode 100644
index 00000000..6b9403ba
--- /dev/null
+++ b/second/07_select/SampleLayout/app/src/test/java/com/example/layout/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.layout;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/build.gradle b/second/07_select/SampleLayout/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/07_select/SampleLayout/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/gradle.properties b/second/07_select/SampleLayout/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/07_select/SampleLayout/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/07_select/SampleLayout/gradle/wrapper/gradle-wrapper.jar b/second/07_select/SampleLayout/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/07_select/SampleLayout/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/07_select/SampleLayout/gradle/wrapper/gradle-wrapper.properties b/second/07_select/SampleLayout/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..73b0df91
--- /dev/null
+++ b/second/07_select/SampleLayout/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Aug 11 00:09:49 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/07_select/SampleLayout/gradlew b/second/07_select/SampleLayout/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/07_select/SampleLayout/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/07_select/SampleLayout/gradlew.bat b/second/07_select/SampleLayout/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/07_select/SampleLayout/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/07_select/SampleLayout/settings.gradle b/second/07_select/SampleLayout/settings.gradle
new file mode 100644
index 00000000..74d2ef82
--- /dev/null
+++ b/second/07_select/SampleLayout/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleLayout"
+include ':app'
diff --git a/second/07_select/SampleNinePatch/.gitignore b/second/07_select/SampleNinePatch/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/07_select/SampleNinePatch/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/07_select/SampleNinePatch/.idea/.gitignore b/second/07_select/SampleNinePatch/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/07_select/SampleNinePatch/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/07_select/SampleNinePatch/.idea/compiler.xml b/second/07_select/SampleNinePatch/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/07_select/SampleNinePatch/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/.idea/gradle.xml b/second/07_select/SampleNinePatch/.idea/gradle.xml
new file mode 100644
index 00000000..440480e5
--- /dev/null
+++ b/second/07_select/SampleNinePatch/.idea/gradle.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/.idea/jarRepositories.xml b/second/07_select/SampleNinePatch/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/07_select/SampleNinePatch/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/.idea/misc.xml b/second/07_select/SampleNinePatch/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/07_select/SampleNinePatch/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/.idea/runConfigurations.xml b/second/07_select/SampleNinePatch/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/07_select/SampleNinePatch/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/.idea/vcs.xml b/second/07_select/SampleNinePatch/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/07_select/SampleNinePatch/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/.gitignore b/second/07_select/SampleNinePatch/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/build.gradle b/second/07_select/SampleNinePatch/app/build.gradle
new file mode 100644
index 00000000..897cbf03
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.ninepatch"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/proguard-rules.pro b/second/07_select/SampleNinePatch/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/androidTest/java/com/example/ninepatch/ExampleInstrumentedTest.java b/second/07_select/SampleNinePatch/app/src/androidTest/java/com/example/ninepatch/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..85d38695
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/androidTest/java/com/example/ninepatch/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.ninepatch;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.ninepatch", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/main/AndroidManifest.xml b/second/07_select/SampleNinePatch/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..1f6578ed
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.ninepatch">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleNinePatch">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/main/java/com/example/ninepatch/MainActivity.java b/second/07_select/SampleNinePatch/app/src/main/java/com/example/ninepatch/MainActivity.java
new file mode 100644
index 00000000..3c4a4640
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/java/com/example/ninepatch/MainActivity.java
@@ -0,0 +1,14 @@
+package com.example.ninepatch;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/07_select/SampleNinePatch/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/drawable/button_image_01.png b/second/07_select/SampleNinePatch/app/src/main/res/drawable/button_image_01.png
new file mode 100644
index 00000000..48a182a5
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/drawable/button_image_01.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/drawable/button_image_02.9.png b/second/07_select/SampleNinePatch/app/src/main/res/drawable/button_image_02.9.png
new file mode 100644
index 00000000..8061a3f9
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/drawable/button_image_02.9.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/drawable/ic_launcher_background.xml b/second/07_select/SampleNinePatch/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/layout/activity_main.xml b/second/07_select/SampleNinePatch/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..ee1ab63f
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity"
+    android:orientation="vertical">
+
+    <Button
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="small"
+        android:textColor="#ffffffff"
+        android:background="@drawable/button_image_01"/>
+
+    <Button
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="mediumMediumMedium"
+        android:textColor="#ffffffff"
+        android:background="@drawable/button_image_01"/>
+
+    <Button
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="LongLongLongLongLongLong"
+        android:textColor="#ffffffff"
+        android:background="@drawable/button_image_01"/>
+
+    <Button
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="small"
+        android:textColor="#ffffffff"
+        android:background="@drawable/button_image_02"/>
+
+    <Button
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="mediumMediumMedium"
+        android:textColor="#ffffffff"
+        android:background="@drawable/button_image_02"/>
+
+    <Button
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="LongLongLongLongLongLong"
+        android:textColor="#ffffffff"
+        android:background="@drawable/button_image_02"/>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/07_select/SampleNinePatch/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/values-night/themes.xml b/second/07_select/SampleNinePatch/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..978b0455
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleNinePatch" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/values/colors.xml b/second/07_select/SampleNinePatch/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/values/strings.xml b/second/07_select/SampleNinePatch/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..06518f40
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleNinePatch</string>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/main/res/values/themes.xml b/second/07_select/SampleNinePatch/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..2ec9ebf0
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleNinePatch" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/app/src/test/java/com/example/ninepatch/ExampleUnitTest.java b/second/07_select/SampleNinePatch/app/src/test/java/com/example/ninepatch/ExampleUnitTest.java
new file mode 100644
index 00000000..5432085c
--- /dev/null
+++ b/second/07_select/SampleNinePatch/app/src/test/java/com/example/ninepatch/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.ninepatch;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/build.gradle b/second/07_select/SampleNinePatch/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/07_select/SampleNinePatch/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/gradle.properties b/second/07_select/SampleNinePatch/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/07_select/SampleNinePatch/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/07_select/SampleNinePatch/gradle/wrapper/gradle-wrapper.jar b/second/07_select/SampleNinePatch/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/07_select/SampleNinePatch/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/07_select/SampleNinePatch/gradle/wrapper/gradle-wrapper.properties b/second/07_select/SampleNinePatch/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..ce0e1659
--- /dev/null
+++ b/second/07_select/SampleNinePatch/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Tue Aug 10 15:43:02 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/07_select/SampleNinePatch/gradlew b/second/07_select/SampleNinePatch/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/07_select/SampleNinePatch/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/07_select/SampleNinePatch/gradlew.bat b/second/07_select/SampleNinePatch/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/07_select/SampleNinePatch/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/07_select/SampleNinePatch/settings.gradle b/second/07_select/SampleNinePatch/settings.gradle
new file mode 100644
index 00000000..979bc57c
--- /dev/null
+++ b/second/07_select/SampleNinePatch/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleNinePatch"
+include ':app'
diff --git a/second/07_select/SampleRecyclerView/.gitignore b/second/07_select/SampleRecyclerView/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/07_select/SampleRecyclerView/.idea/.gitignore b/second/07_select/SampleRecyclerView/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/07_select/SampleRecyclerView/.idea/compiler.xml b/second/07_select/SampleRecyclerView/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/.idea/gradle.xml b/second/07_select/SampleRecyclerView/.idea/gradle.xml
new file mode 100644
index 00000000..5cd135a0
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/.idea/gradle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/.idea/jarRepositories.xml b/second/07_select/SampleRecyclerView/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/.idea/misc.xml b/second/07_select/SampleRecyclerView/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/.idea/runConfigurations.xml b/second/07_select/SampleRecyclerView/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/.idea/vcs.xml b/second/07_select/SampleRecyclerView/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/.gitignore b/second/07_select/SampleRecyclerView/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/build.gradle b/second/07_select/SampleRecyclerView/app/build.gradle
new file mode 100644
index 00000000..4f78f106
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.recyclerview"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/proguard-rules.pro b/second/07_select/SampleRecyclerView/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/androidTest/java/com/example/recyclerview/ExampleInstrumentedTest.java b/second/07_select/SampleRecyclerView/app/src/androidTest/java/com/example/recyclerview/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..d7f4ca6f
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/androidTest/java/com/example/recyclerview/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.recyclerview;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.recyclerview", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/AndroidManifest.xml b/second/07_select/SampleRecyclerView/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..f893b715
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.recyclerview">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleRecyclerView">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/java/com/example/recyclerview/MainActivity.java b/second/07_select/SampleRecyclerView/app/src/main/java/com/example/recyclerview/MainActivity.java
new file mode 100644
index 00000000..0922b554
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/java/com/example/recyclerview/MainActivity.java
@@ -0,0 +1,29 @@
+package com.example.recyclerview;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.os.Bundle;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        RecyclerView recyclerView = findViewById(R.id.recyclerView);
+
+        LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
+        recyclerView.setLayoutManager(layoutManager);
+
+        PersonAdapter adapter = new PersonAdapter();
+
+        adapter.addItem(new Person("김민수", "010-1000-1000"));
+        adapter.addItem(new Person("김하늘", "010-2000-2000"));
+        adapter.addItem(new Person("홍길동", "010-3000-3000"));
+
+        recyclerView.setAdapter(adapter);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/java/com/example/recyclerview/Person.java b/second/07_select/SampleRecyclerView/app/src/main/java/com/example/recyclerview/Person.java
new file mode 100644
index 00000000..f844aba2
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/java/com/example/recyclerview/Person.java
@@ -0,0 +1,27 @@
+package com.example.recyclerview;
+
+public class Person {
+    String name;
+    String mobile;
+
+    public Person(String name, String mobile) {
+        this.name = name;
+        this.mobile = mobile;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getMobile() {
+        return mobile;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void setMobile(String mobile) {
+        this.mobile = mobile;
+    }
+}
diff --git a/second/07_select/SampleRecyclerView/app/src/main/java/com/example/recyclerview/PersonAdapter.java b/second/07_select/SampleRecyclerView/app/src/main/java/com/example/recyclerview/PersonAdapter.java
new file mode 100644
index 00000000..b3aa0d4e
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/java/com/example/recyclerview/PersonAdapter.java
@@ -0,0 +1,70 @@
+package com.example.recyclerview;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import org.w3c.dom.Text;
+
+import java.util.ArrayList;
+
+public class PersonAdapter extends RecyclerView.Adapter<PersonAdapter.ViewHolder> {
+    ArrayList<Person> items = new ArrayList<Person>();
+
+    @NonNull
+    @Override
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());
+        View itemView = inflater.inflate(R.layout.person_item, viewGroup, false);
+
+        return new ViewHolder(itemView);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder viewHolder, int position) {
+        Person item = items.get(position);
+        viewHolder.setItem(item);
+    }
+
+    @Override
+    public int getItemCount() {
+        return items.size();
+    }
+
+    public void addItem(Person item) {
+        items.add(item);
+    }
+
+    public void setItems(ArrayList<Person> items) {
+        this.items = items;
+    }
+
+    public Person getItem(int position) {
+        return items.get(position);
+    }
+
+    public void setItem(int position, Person item) {
+        items.set(position, item);
+    }
+
+    static class ViewHolder extends RecyclerView.ViewHolder {
+        TextView textView;
+        TextView textView2;
+
+        public ViewHolder(View itemView) {
+            super(itemView);
+
+            textView = itemView.findViewById(R.id.textView);
+            textView2 = itemView.findViewById(R.id.textView2);
+        }
+
+        public void setItem(Person item) {
+            textView.setText(item.getName());
+            textView2.setText(item.getMobile());
+        }
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/07_select/SampleRecyclerView/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/drawable/ic_launcher_background.xml b/second/07_select/SampleRecyclerView/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/layout/activity_main.xml b/second/07_select/SampleRecyclerView/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..1b8abcbf
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity"
+    android:orientation="vertical">
+
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/layout/person_item.xml b/second/07_select/SampleRecyclerView/app/src/main/res/layout/person_item.xml
new file mode 100644
index 00000000..b78d117b
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/res/layout/person_item.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <androidx.cardview.widget.CardView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:cardBackgroundColor="#ffffffff"
+        app:cardCornerRadius="10dp"
+        app:cardElevation="5dp"
+        app:cardUseCompatPadding="true">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <ImageView
+                android:id="@+id/imageView"
+                android:layout_width="80dp"
+                android:layout_height="80dp"
+                android:padding="5dp"
+                android:src="@mipmap/ic_launcher"/>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_margin="5dp"
+                android:layout_weight="1"
+                android:orientation="vertical">
+
+                <TextView
+                    android:id="@+id/textView"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:text="이름"
+                    android:textSize="30sp"/>
+
+                <TextView
+                    android:id="@+id/textView2"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:text="전화번호"
+                    android:textColor="#ff0000ff"
+                    android:textSize="25sp"/>
+            </LinearLayout>
+        </LinearLayout>
+    </androidx.cardview.widget.CardView>
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/07_select/SampleRecyclerView/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/values-night/themes.xml b/second/07_select/SampleRecyclerView/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..ff4db9a3
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleRecyclerView" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/values/colors.xml b/second/07_select/SampleRecyclerView/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/values/strings.xml b/second/07_select/SampleRecyclerView/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..0adcf7e7
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleRecyclerView</string>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/main/res/values/themes.xml b/second/07_select/SampleRecyclerView/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..dc48bb35
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleRecyclerView" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/app/src/test/java/com/example/recyclerview/ExampleUnitTest.java b/second/07_select/SampleRecyclerView/app/src/test/java/com/example/recyclerview/ExampleUnitTest.java
new file mode 100644
index 00000000..02f682c1
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/app/src/test/java/com/example/recyclerview/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.recyclerview;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/build.gradle b/second/07_select/SampleRecyclerView/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/gradle.properties b/second/07_select/SampleRecyclerView/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView/gradle/wrapper/gradle-wrapper.jar b/second/07_select/SampleRecyclerView/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/07_select/SampleRecyclerView/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/07_select/SampleRecyclerView/gradle/wrapper/gradle-wrapper.properties b/second/07_select/SampleRecyclerView/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..2f918544
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Aug 11 00:37:00 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/07_select/SampleRecyclerView/gradlew b/second/07_select/SampleRecyclerView/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/07_select/SampleRecyclerView/gradlew.bat b/second/07_select/SampleRecyclerView/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/07_select/SampleRecyclerView/settings.gradle b/second/07_select/SampleRecyclerView/settings.gradle
new file mode 100644
index 00000000..6549486d
--- /dev/null
+++ b/second/07_select/SampleRecyclerView/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleRecyclerView"
+include ':app'
diff --git a/second/07_select/SampleRecyclerView2/.gitignore b/second/07_select/SampleRecyclerView2/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/07_select/SampleRecyclerView2/.idea/.gitignore b/second/07_select/SampleRecyclerView2/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/07_select/SampleRecyclerView2/.idea/.name b/second/07_select/SampleRecyclerView2/.idea/.name
new file mode 100644
index 00000000..a8ade15a
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/.idea/.name
@@ -0,0 +1 @@
+SampleRecyclerView
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/.idea/compiler.xml b/second/07_select/SampleRecyclerView2/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/.idea/gradle.xml b/second/07_select/SampleRecyclerView2/.idea/gradle.xml
new file mode 100644
index 00000000..5cd135a0
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/.idea/gradle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/.idea/jarRepositories.xml b/second/07_select/SampleRecyclerView2/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/.idea/misc.xml b/second/07_select/SampleRecyclerView2/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/.idea/runConfigurations.xml b/second/07_select/SampleRecyclerView2/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/.idea/vcs.xml b/second/07_select/SampleRecyclerView2/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/.gitignore b/second/07_select/SampleRecyclerView2/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/.idea/workspace.xml b/second/07_select/SampleRecyclerView2/app/.idea/workspace.xml
new file mode 100644
index 00000000..2fa14814
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/.idea/workspace.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="PropertiesComponent">
+    <property name="settings.editor.selected.configurable" value="AndroidSdkUpdater" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/build.gradle b/second/07_select/SampleRecyclerView2/app/build.gradle
new file mode 100644
index 00000000..4f78f106
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.recyclerview"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/proguard-rules.pro b/second/07_select/SampleRecyclerView2/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/androidTest/java/com/example/recyclerview2/ExampleInstrumentedTest.java b/second/07_select/SampleRecyclerView2/app/src/androidTest/java/com/example/recyclerview2/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..44fb5ee1
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/androidTest/java/com/example/recyclerview2/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.recyclerview2;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.recyclerview", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/AndroidManifest.xml b/second/07_select/SampleRecyclerView2/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..4fc9611f
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.recyclerview2">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleRecyclerView">
+        <activity android:name="com.example.recyclerview2.MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/MainActivity.java b/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/MainActivity.java
new file mode 100644
index 00000000..6dbf7b32
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/MainActivity.java
@@ -0,0 +1,52 @@
+package com.example.recyclerview2;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Toast;
+
+public class MainActivity extends AppCompatActivity {
+    RecyclerView recyclerView;
+    PersonAdapter adapter;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        recyclerView = findViewById(R.id.recyclerView);
+
+        GridLayoutManager layoutManager = new GridLayoutManager(this, 2);
+        recyclerView.setLayoutManager(layoutManager);
+
+        PersonAdapter adapter = new PersonAdapter();
+
+        adapter.addItem(new Person("김민수", "010-1000-1000"));
+        adapter.addItem(new Person("김하늘", "010-2000-2000"));
+        adapter.addItem(new Person("홍길동", "010-3000-3000"));
+        adapter.addItem(new Person("내이름1", "010-4000-4000"));
+        adapter.addItem(new Person("내이름2", "010-4000-4000"));
+        adapter.addItem(new Person("내이름3", "010-4000-4000"));
+        adapter.addItem(new Person("내이름4", "010-4000-4000"));
+        adapter.addItem(new Person("내이름5", "010-4000-4000"));
+        adapter.addItem(new Person("내이름6", "010-4000-4000"));
+        adapter.addItem(new Person("내이름7", "010-4000-4000"));
+        adapter.addItem(new Person("내이름8", "010-4000-4000"));
+        adapter.addItem(new Person("내이름9", "010-4000-4000"));
+        adapter.addItem(new Person("내이름10", "010-4000-4000"));
+
+        recyclerView.setAdapter(adapter);
+
+        adapter.setOnItemClickListener(new OnPersonItemClickListener() {
+            @Override
+            public void onItemClick(PersonAdapter.ViewHolder holder, View view, int position) {
+                Person item = adapter.getItem(position);
+                Toast.makeText(getApplicationContext(), "아이템 선택됨" + item.getName(), Toast.LENGTH_LONG).show();
+            }
+        });
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/OnPersonItemClickListener.java b/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/OnPersonItemClickListener.java
new file mode 100644
index 00000000..576e50f5
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/OnPersonItemClickListener.java
@@ -0,0 +1,7 @@
+package com.example.recyclerview2;
+
+import android.view.View;
+
+public interface OnPersonItemClickListener {
+    public void onItemClick(PersonAdapter.ViewHolder holder, View view, int position);
+}
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/Person.java b/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/Person.java
new file mode 100644
index 00000000..f6ee30a0
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/Person.java
@@ -0,0 +1,27 @@
+package com.example.recyclerview2;
+
+public class Person {
+    String name;
+    String mobile;
+
+    public Person(String name, String mobile) {
+        this.name = name;
+        this.mobile = mobile;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getMobile() {
+        return mobile;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public void setMobile(String mobile) {
+        this.mobile = mobile;
+    }
+}
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/PersonAdapter.java b/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/PersonAdapter.java
new file mode 100644
index 00000000..76f06ef0
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/java/com/example/recyclerview2/PersonAdapter.java
@@ -0,0 +1,90 @@
+package com.example.recyclerview2;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+
+public class PersonAdapter extends RecyclerView.Adapter<PersonAdapter.ViewHolder> implements OnPersonItemClickListener {
+    ArrayList<Person> items = new ArrayList<Person>();
+    OnPersonItemClickListener listener;
+
+    @NonNull
+    @Override
+    public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) {
+        LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());
+        View itemView = inflater.inflate(R.layout.person_item, viewGroup, false);
+
+        return new ViewHolder(itemView, this);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull ViewHolder viewHolder, int position) {
+        Person item = items.get(position);
+        viewHolder.setItem(item);
+    }
+
+    @Override
+    public int getItemCount() {
+        return items.size();
+    }
+
+    public void addItem(Person item) {
+        items.add(item);
+    }
+
+    public void setItems(ArrayList<Person> items) {
+        this.items = items;
+    }
+
+    public Person getItem(int position) {
+        return items.get(position);
+    }
+
+    public void setItem(int position, Person item) {
+        items.set(position, item);
+    }
+
+    static class ViewHolder extends RecyclerView.ViewHolder {
+        TextView textView;
+        TextView textView2;
+
+        public ViewHolder(View itemView, final OnPersonItemClickListener listener) {
+            super(itemView);
+
+            textView = itemView.findViewById(R.id.textView);
+            textView2 = itemView.findViewById(R.id.textView2);
+
+            itemView.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View view) {
+                    int position = getAdapterPosition();
+                    if (listener != null) {
+                        listener.onItemClick(ViewHolder.this, view, position);
+                    }
+                }
+            });
+        }
+
+        public void setItem(Person item) {
+            textView.setText(item.getName());
+            textView2.setText(item.getMobile());
+        }
+    }
+
+    public void setOnItemClickListener(OnPersonItemClickListener listener) {
+        this.listener = listener;
+    }
+
+    @Override
+    public void onItemClick(ViewHolder holder, View view, int position) {
+        if (listener != null) {
+            listener.onItemClick(holder, view, position);
+        }
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/07_select/SampleRecyclerView2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/drawable/ic_launcher_background.xml b/second/07_select/SampleRecyclerView2/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/layout/activity_main.xml b/second/07_select/SampleRecyclerView2/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..1b8abcbf
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity"
+    android:orientation="vertical">
+
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent" />
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/layout/person_item.xml b/second/07_select/SampleRecyclerView2/app/src/main/res/layout/person_item.xml
new file mode 100644
index 00000000..e7c00b79
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/res/layout/person_item.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <androidx.cardview.widget.CardView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:cardBackgroundColor="#ffffffff"
+        app:cardCornerRadius="10dp"
+        app:cardElevation="5dp"
+        app:cardUseCompatPadding="true">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="horizontal">
+
+            <ImageView
+                android:id="@+id/imageView"
+                android:layout_width="80dp"
+                android:layout_height="80dp"
+                android:padding="5dp"
+                android:src="@mipmap/ic_launcher"/>
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_margin="5dp"
+                android:layout_weight="1"
+                android:orientation="vertical">
+
+                <TextView
+                    android:id="@+id/textView"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:text="이름"
+                    android:textSize="25sp"/>
+
+                <TextView
+                    android:id="@+id/textView2"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:text="전화번호"
+                    android:textColor="#ff0000ff"
+                    android:textSize="15sp"/>
+            </LinearLayout>
+        </LinearLayout>
+    </androidx.cardview.widget.CardView>
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/values-night/themes.xml b/second/07_select/SampleRecyclerView2/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..ff4db9a3
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleRecyclerView" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/values/colors.xml b/second/07_select/SampleRecyclerView2/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/values/strings.xml b/second/07_select/SampleRecyclerView2/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..0adcf7e7
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleRecyclerView</string>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/main/res/values/themes.xml b/second/07_select/SampleRecyclerView2/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..dc48bb35
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleRecyclerView" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/app/src/test/java/com/example/recyclerview2/ExampleUnitTest.java b/second/07_select/SampleRecyclerView2/app/src/test/java/com/example/recyclerview2/ExampleUnitTest.java
new file mode 100644
index 00000000..9d00117b
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/app/src/test/java/com/example/recyclerview2/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.recyclerview2;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/build.gradle b/second/07_select/SampleRecyclerView2/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/gradle.properties b/second/07_select/SampleRecyclerView2/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/07_select/SampleRecyclerView2/gradle/wrapper/gradle-wrapper.jar b/second/07_select/SampleRecyclerView2/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/07_select/SampleRecyclerView2/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/07_select/SampleRecyclerView2/gradle/wrapper/gradle-wrapper.properties b/second/07_select/SampleRecyclerView2/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..2f918544
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Aug 11 00:37:00 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/07_select/SampleRecyclerView2/gradlew b/second/07_select/SampleRecyclerView2/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/07_select/SampleRecyclerView2/gradlew.bat b/second/07_select/SampleRecyclerView2/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/07_select/SampleRecyclerView2/settings.gradle b/second/07_select/SampleRecyclerView2/settings.gradle
new file mode 100644
index 00000000..6549486d
--- /dev/null
+++ b/second/07_select/SampleRecyclerView2/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleRecyclerView"
+include ':app'
diff --git a/second/07_select/SampleSpinner/.gitignore b/second/07_select/SampleSpinner/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/07_select/SampleSpinner/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/07_select/SampleSpinner/.idea/.gitignore b/second/07_select/SampleSpinner/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/07_select/SampleSpinner/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/07_select/SampleSpinner/.idea/compiler.xml b/second/07_select/SampleSpinner/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/07_select/SampleSpinner/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/.idea/gradle.xml b/second/07_select/SampleSpinner/.idea/gradle.xml
new file mode 100644
index 00000000..440480e5
--- /dev/null
+++ b/second/07_select/SampleSpinner/.idea/gradle.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/.idea/jarRepositories.xml b/second/07_select/SampleSpinner/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/07_select/SampleSpinner/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/.idea/misc.xml b/second/07_select/SampleSpinner/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/07_select/SampleSpinner/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/.idea/runConfigurations.xml b/second/07_select/SampleSpinner/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/07_select/SampleSpinner/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/.idea/vcs.xml b/second/07_select/SampleSpinner/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/07_select/SampleSpinner/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/.gitignore b/second/07_select/SampleSpinner/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/build.gradle b/second/07_select/SampleSpinner/app/build.gradle
new file mode 100644
index 00000000..2a85b41a
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.spinner"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/proguard-rules.pro b/second/07_select/SampleSpinner/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/androidTest/java/com/example/spinner/ExampleInstrumentedTest.java b/second/07_select/SampleSpinner/app/src/androidTest/java/com/example/spinner/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..303986fd
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/androidTest/java/com/example/spinner/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.spinner;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.spinner", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/main/AndroidManifest.xml b/second/07_select/SampleSpinner/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..ef24e215
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.spinner">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleSpinner">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/main/java/com/example/spinner/MainActivity.java b/second/07_select/SampleSpinner/app/src/main/java/com/example/spinner/MainActivity.java
new file mode 100644
index 00000000..9f941013
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/java/com/example/spinner/MainActivity.java
@@ -0,0 +1,43 @@
+package com.example.spinner;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+import android.view.View;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Spinner;
+import android.widget.TextView;
+
+public class MainActivity extends AppCompatActivity {
+    TextView textView;
+
+    String[] items = {"mike", "angel", "crow", "john", "ginnie", "sally", "cohen", "rice"};
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        textView = findViewById(R.id.textView);
+
+        Spinner spinner = findViewById(R.id.spinner);
+        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, items);
+        adapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
+
+        spinner.setAdapter(adapter);
+
+        spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
+            @Override
+            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
+                textView.setText(items[position]);
+            }
+
+            @Override
+            public void onNothingSelected(AdapterView<?> parent) {
+                textView.setText("");
+            }
+        });
+
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/07_select/SampleSpinner/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/main/res/drawable/ic_launcher_background.xml b/second/07_select/SampleSpinner/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/07_select/SampleSpinner/app/src/main/res/layout/activity_main.xml b/second/07_select/SampleSpinner/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..4f227e75
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity"
+    android:orientation="vertical">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="선택한 아이템"
+        android:textSize="30sp"/>
+
+    <Spinner
+        android:id="@+id/spinner"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"/>
+</LinearLayout>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/07_select/SampleSpinner/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/07_select/SampleSpinner/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/07_select/SampleSpinner/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/07_select/SampleSpinner/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/07_select/SampleSpinner/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/07_select/SampleSpinner/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/07_select/SampleSpinner/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/07_select/SampleSpinner/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/07_select/SampleSpinner/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/07_select/SampleSpinner/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/07_select/SampleSpinner/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleSpinner/app/src/main/res/values-night/themes.xml b/second/07_select/SampleSpinner/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..8b3c0371
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleSpinner" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/main/res/values/colors.xml b/second/07_select/SampleSpinner/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/main/res/values/strings.xml b/second/07_select/SampleSpinner/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..6db8ce2d
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleSpinner</string>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/main/res/values/themes.xml b/second/07_select/SampleSpinner/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..a16f6fe9
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleSpinner" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/app/src/test/java/com/example/spinner/ExampleUnitTest.java b/second/07_select/SampleSpinner/app/src/test/java/com/example/spinner/ExampleUnitTest.java
new file mode 100644
index 00000000..79caef77
--- /dev/null
+++ b/second/07_select/SampleSpinner/app/src/test/java/com/example/spinner/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.spinner;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/build.gradle b/second/07_select/SampleSpinner/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/07_select/SampleSpinner/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/gradle.properties b/second/07_select/SampleSpinner/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/07_select/SampleSpinner/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/07_select/SampleSpinner/gradle/wrapper/gradle-wrapper.jar b/second/07_select/SampleSpinner/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/07_select/SampleSpinner/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/07_select/SampleSpinner/gradle/wrapper/gradle-wrapper.properties b/second/07_select/SampleSpinner/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..b9a678fb
--- /dev/null
+++ b/second/07_select/SampleSpinner/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Aug 11 01:36:03 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/07_select/SampleSpinner/gradlew b/second/07_select/SampleSpinner/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/07_select/SampleSpinner/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/07_select/SampleSpinner/gradlew.bat b/second/07_select/SampleSpinner/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/07_select/SampleSpinner/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/07_select/SampleSpinner/settings.gradle b/second/07_select/SampleSpinner/settings.gradle
new file mode 100644
index 00000000..10ef6eef
--- /dev/null
+++ b/second/07_select/SampleSpinner/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleSpinner"
+include ':app'
diff --git a/second/07_select/SampleView/.gitignore b/second/07_select/SampleView/.gitignore
new file mode 100644
index 00000000..aa724b77
--- /dev/null
+++ b/second/07_select/SampleView/.gitignore
@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties
diff --git a/second/07_select/SampleView/.idea/.gitignore b/second/07_select/SampleView/.idea/.gitignore
new file mode 100644
index 00000000..26d33521
--- /dev/null
+++ b/second/07_select/SampleView/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/second/07_select/SampleView/.idea/compiler.xml b/second/07_select/SampleView/.idea/compiler.xml
new file mode 100644
index 00000000..fb7f4a8a
--- /dev/null
+++ b/second/07_select/SampleView/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="11" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleView/.idea/gradle.xml b/second/07_select/SampleView/.idea/gradle.xml
new file mode 100644
index 00000000..5cd135a0
--- /dev/null
+++ b/second/07_select/SampleView/.idea/gradle.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="PLATFORM" />
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleView/.idea/jarRepositories.xml b/second/07_select/SampleView/.idea/jarRepositories.xml
new file mode 100644
index 00000000..0380d8d3
--- /dev/null
+++ b/second/07_select/SampleView/.idea/jarRepositories.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="MavenRepo" />
+      <option name="name" value="MavenRepo" />
+      <option name="url" value="https://repo.maven.apache.org/maven2/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="BintrayJCenter" />
+      <option name="name" value="BintrayJCenter" />
+      <option name="url" value="https://jcenter.bintray.com/" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="Google" />
+      <option name="name" value="Google" />
+      <option name="url" value="https://dl.google.com/dl/android/maven2/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleView/.idea/misc.xml b/second/07_select/SampleView/.idea/misc.xml
new file mode 100644
index 00000000..6199cc2a
--- /dev/null
+++ b/second/07_select/SampleView/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="11" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleView/.idea/runConfigurations.xml b/second/07_select/SampleView/.idea/runConfigurations.xml
new file mode 100644
index 00000000..797acea5
--- /dev/null
+++ b/second/07_select/SampleView/.idea/runConfigurations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.android.tools.idea.compose.preview.runconfiguration.ComposePreviewRunConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleView/.idea/vcs.xml b/second/07_select/SampleView/.idea/vcs.xml
new file mode 100644
index 00000000..c2365ab1
--- /dev/null
+++ b/second/07_select/SampleView/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/../../.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/.gitignore b/second/07_select/SampleView/app/.gitignore
new file mode 100644
index 00000000..42afabfd
--- /dev/null
+++ b/second/07_select/SampleView/app/.gitignore
@@ -0,0 +1 @@
+/build
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/build.gradle b/second/07_select/SampleView/app/build.gradle
new file mode 100644
index 00000000..b2b42de0
--- /dev/null
+++ b/second/07_select/SampleView/app/build.gradle
@@ -0,0 +1,39 @@
+plugins {
+    id 'com.android.application'
+}
+
+android {
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
+
+    defaultConfig {
+        applicationId "com.example.view"
+        minSdkVersion 16
+        targetSdkVersion 30
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+    compileOptions {
+        sourceCompatibility JavaVersion.VERSION_1_8
+        targetCompatibility JavaVersion.VERSION_1_8
+    }
+}
+
+dependencies {
+
+    implementation 'androidx.appcompat:appcompat:1.3.1'
+    implementation 'com.google.android.material:material:1.4.0'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
+    testImplementation 'junit:junit:4.+'
+    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
+}
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/proguard-rules.pro b/second/07_select/SampleView/app/proguard-rules.pro
new file mode 100644
index 00000000..481bb434
--- /dev/null
+++ b/second/07_select/SampleView/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/androidTest/java/com/example/view/ExampleInstrumentedTest.java b/second/07_select/SampleView/app/src/androidTest/java/com/example/view/ExampleInstrumentedTest.java
new file mode 100644
index 00000000..6aa12723
--- /dev/null
+++ b/second/07_select/SampleView/app/src/androidTest/java/com/example/view/ExampleInstrumentedTest.java
@@ -0,0 +1,26 @@
+package com.example.view;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("com.example.view", appContext.getPackageName());
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/AndroidManifest.xml b/second/07_select/SampleView/app/src/main/AndroidManifest.xml
new file mode 100644
index 00000000..96d0f390
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/AndroidManifest.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.example.view">
+
+    <application
+        android:allowBackup="true"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.SampleView">
+        <activity android:name=".MainActivity">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/java/com/example/view/MainActivity.java b/second/07_select/SampleView/app/src/main/java/com/example/view/MainActivity.java
new file mode 100644
index 00000000..e542b49c
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/java/com/example/view/MainActivity.java
@@ -0,0 +1,14 @@
+package com.example.view;
+
+import androidx.appcompat.app.AppCompatActivity;
+
+import android.os.Bundle;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/java/com/example/view/MyButton.java b/second/07_select/SampleView/app/src/main/java/com/example/view/MyButton.java
new file mode 100644
index 00000000..a15f6479
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/java/com/example/view/MyButton.java
@@ -0,0 +1,61 @@
+package com.example.view;
+
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Color;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.MotionEvent;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.widget.AppCompatButton;
+
+public class MyButton extends AppCompatButton {
+    public MyButton(Context context) {
+        super(context);
+        init(context);
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+
+        Log.d("MyButton", "onDraw 호출됨");
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        Log.d("MyButton", "onTouchEvent 호출됨");
+
+        int action = event.getAction();
+        switch (action) {
+            case MotionEvent.ACTION_DOWN:
+                setBackgroundColor(Color.BLUE);
+                setTextColor(Color.RED);
+                break;
+            case MotionEvent.ACTION_OUTSIDE:
+            case MotionEvent.ACTION_CANCEL:
+            case MotionEvent.ACTION_UP:
+                setBackgroundColor(Color.CYAN);
+                setTextColor(Color.BLACK);
+                break;
+        }
+
+        invalidate();
+        return true;
+    }
+
+    public MyButton(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        init(context);
+    }
+
+    private void init(Context context) {
+        setBackgroundColor(Color.CYAN);
+        setTextColor(Color.BLACK);
+
+        float textSize = getResources().getDimension(R.dimen.text_size);
+        setTextSize(textSize);
+    }
+}
diff --git a/second/07_select/SampleView/app/src/main/res/drawable-v24/ic_launcher_foreground.xml b/second/07_select/SampleView/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 00000000..2b068d11
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/res/drawable/ic_launcher_background.xml b/second/07_select/SampleView/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 00000000..07d5da9c
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>
diff --git a/second/07_select/SampleView/app/src/main/res/layout/activity_main.xml b/second/07_select/SampleView/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 00000000..36422e47
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <com.example.view.MyButton
+        android:id="@+id/button"
+        android:layout_width="200dp"
+        android:layout_height="80dp"
+        android:layout_centerInParent="true"
+        android:text="시작하기"/>
+
+</RelativeLayout>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/second/07_select/SampleView/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/second/07_select/SampleView/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 00000000..eca70cfe
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-hdpi/ic_launcher.png b/second/07_select/SampleView/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 00000000..a571e600
Binary files /dev/null and b/second/07_select/SampleView/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-hdpi/ic_launcher_round.png b/second/07_select/SampleView/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 00000000..61da551c
Binary files /dev/null and b/second/07_select/SampleView/app/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-mdpi/ic_launcher.png b/second/07_select/SampleView/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 00000000..c41dd285
Binary files /dev/null and b/second/07_select/SampleView/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-mdpi/ic_launcher_round.png b/second/07_select/SampleView/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 00000000..db5080a7
Binary files /dev/null and b/second/07_select/SampleView/app/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-xhdpi/ic_launcher.png b/second/07_select/SampleView/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 00000000..6dba46da
Binary files /dev/null and b/second/07_select/SampleView/app/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/second/07_select/SampleView/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..da31a871
Binary files /dev/null and b/second/07_select/SampleView/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-xxhdpi/ic_launcher.png b/second/07_select/SampleView/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 00000000..15ac6817
Binary files /dev/null and b/second/07_select/SampleView/app/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/second/07_select/SampleView/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..b216f2d3
Binary files /dev/null and b/second/07_select/SampleView/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/second/07_select/SampleView/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 00000000..f25a4197
Binary files /dev/null and b/second/07_select/SampleView/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/second/07_select/SampleView/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/second/07_select/SampleView/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 00000000..e96783cc
Binary files /dev/null and b/second/07_select/SampleView/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/second/07_select/SampleView/app/src/main/res/values-night/themes.xml b/second/07_select/SampleView/app/src/main/res/values-night/themes.xml
new file mode 100644
index 00000000..173680e0
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/res/values-night/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleView" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/res/values/colors.xml b/second/07_select/SampleView/app/src/main/res/values/colors.xml
new file mode 100644
index 00000000..f8c6127d
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/res/values/colors.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/res/values/dimens.xml b/second/07_select/SampleView/app/src/main/res/values/dimens.xml
new file mode 100644
index 00000000..4d8b7077
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/res/values/dimens.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <dimen name="text_size">16sp</dimen>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/res/values/strings.xml b/second/07_select/SampleView/app/src/main/res/values/strings.xml
new file mode 100644
index 00000000..d833438a
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/res/values/strings.xml
@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">SampleView</string>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/main/res/values/themes.xml b/second/07_select/SampleView/app/src/main/res/values/themes.xml
new file mode 100644
index 00000000..704b63ca
--- /dev/null
+++ b/second/07_select/SampleView/app/src/main/res/values/themes.xml
@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.SampleView" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>
\ No newline at end of file
diff --git a/second/07_select/SampleView/app/src/test/java/com/example/view/ExampleUnitTest.java b/second/07_select/SampleView/app/src/test/java/com/example/view/ExampleUnitTest.java
new file mode 100644
index 00000000..ce7aa64b
--- /dev/null
+++ b/second/07_select/SampleView/app/src/test/java/com/example/view/ExampleUnitTest.java
@@ -0,0 +1,17 @@
+package com.example.view;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}
\ No newline at end of file
diff --git a/second/07_select/SampleView/build.gradle b/second/07_select/SampleView/build.gradle
new file mode 100644
index 00000000..5a7c7fc5
--- /dev/null
+++ b/second/07_select/SampleView/build.gradle
@@ -0,0 +1,25 @@
+// Top-level build file where you can add configuration options common to all sub-projects/modules.
+buildscript {
+    repositories {
+        google()
+        mavenCentral()
+    }
+    dependencies {
+        classpath "com.android.tools.build:gradle:4.2.2"
+
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        mavenCentral()
+        jcenter() // Warning: this repository is going to shut down soon
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
\ No newline at end of file
diff --git a/second/07_select/SampleView/gradle.properties b/second/07_select/SampleView/gradle.properties
new file mode 100644
index 00000000..6826e61b
--- /dev/null
+++ b/second/07_select/SampleView/gradle.properties
@@ -0,0 +1,17 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
\ No newline at end of file
diff --git a/second/07_select/SampleView/gradle/wrapper/gradle-wrapper.jar b/second/07_select/SampleView/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000..f6b961fd
Binary files /dev/null and b/second/07_select/SampleView/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/second/07_select/SampleView/gradle/wrapper/gradle-wrapper.properties b/second/07_select/SampleView/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000..f60e7f1c
--- /dev/null
+++ b/second/07_select/SampleView/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Tue Aug 10 15:59:34 KST 2021
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.7.1-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
diff --git a/second/07_select/SampleView/gradlew b/second/07_select/SampleView/gradlew
new file mode 100755
index 00000000..cccdd3d5
--- /dev/null
+++ b/second/07_select/SampleView/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/second/07_select/SampleView/gradlew.bat b/second/07_select/SampleView/gradlew.bat
new file mode 100644
index 00000000..e95643d6
--- /dev/null
+++ b/second/07_select/SampleView/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/second/07_select/SampleView/settings.gradle b/second/07_select/SampleView/settings.gradle
new file mode 100644
index 00000000..dc1e2938
--- /dev/null
+++ b/second/07_select/SampleView/settings.gradle
@@ -0,0 +1,2 @@
+rootProject.name = "SampleView"
+include ':app'
diff --git a/second/09_thread/SampleAsyncTask/.gradle/6.7.1/fileChanges/last-build.bin b/second/09_thread/SampleAsyncTask/.gradle/6.7.1/fileChanges/last-build.bin
new file mode 100644
index 00000000..f76dd238
Binary files /dev/null and b/second/09_thread/SampleAsyncTask/.gradle/6.7.1/fileChanges/last-build.bin differ
diff --git a/second/09_thread/SampleAsyncTask/.gradle/6.7.1/fileHashes/fileHashes.bin b/second/09_thread/SampleAsyncTask/.gradle/6.7.1/fileHashes/fileHashes.bin
new file mode 100644
index 00000000..78eabf0f
Binary files /dev/null and b/second/09_thread/SampleAsyncTask/.gradle/6.7.1/fileHashes/fileHashes.bin differ
diff --git a/second/09_thread/SampleAsyncTask/.gradle/6.7.1/fileHashes/fileHashes.lock b/second/09_thread/SampleAsyncTask/.gradle/6.7.1/fileHashes/fileHashes.lock
new file mode 100644
index 00000000..13d0e732
Binary files /dev/null and b/second/09_thread/SampleAsyncTask/.gradle/6.7.1/fileHashes/fileHashes.lock differ
diff --git a/second/09_thread/SampleAsyncTask/.gradle/6.7.1/gc.properties b/second/09_thread/SampleAsyncTask/.gradle/6.7.1/gc.properties
new file mode 100644
index 00000000..e69de29b
diff --git a/second/09_thread/SampleAsyncTask/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/second/09_thread/SampleAsyncTask/.gradle/buildOutputCleanup/buildOutputCleanup.lock
new file mode 100644
index 00000000..ab7b79ef
Binary files /dev/null and b/second/09_thread/SampleAsyncTask/.gradle/buildOutputCleanup/buildOutputCleanup.lock differ
diff --git a/second/09_thread/SampleAsyncTask/.gradle/buildOutputCleanup/cache.properties b/second/09_thread/SampleAsyncTask/.gradle/buildOutputCleanup/cache.properties
new file mode 100644
index 00000000..d9de8635
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.gradle/buildOutputCleanup/cache.properties
@@ -0,0 +1,2 @@
+#Thu Aug 19 09:36:01 KST 2021
+gradle.version=6.7.1
diff --git a/second/09_thread/SampleAsyncTask/.gradle/checksums/checksums.lock b/second/09_thread/SampleAsyncTask/.gradle/checksums/checksums.lock
new file mode 100644
index 00000000..eb5e6880
Binary files /dev/null and b/second/09_thread/SampleAsyncTask/.gradle/checksums/checksums.lock differ
diff --git a/second/09_thread/SampleAsyncTask/.gradle/configuration-cache/gc.properties b/second/09_thread/SampleAsyncTask/.gradle/configuration-cache/gc.properties
new file mode 100644
index 00000000..e69de29b
diff --git a/second/09_thread/SampleAsyncTask/.gradle/vcs-1/gc.properties b/second/09_thread/SampleAsyncTask/.gradle/vcs-1/gc.properties
new file mode 100644
index 00000000..e69de29b
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_activity_activity_1_2_4_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_activity_activity_1_2_4_aar.xml
new file mode 100644
index 00000000..f29bccc1
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_activity_activity_1_2_4_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.activity:activity:1.2.4@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.activity/activity/1.2.4/2572345ff3e71e4e97140b01423cb80765b5b3e5/activity-1.2.4-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_annotation_annotation_1_2_0.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_annotation_annotation_1_2_0.xml
new file mode 100644
index 00000000..74437d76
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_annotation_annotation_1_2_0.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.annotation:annotation:1.2.0">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.annotation/annotation/1.2.0/57136ff68ee784c6e19db34ed4a175338fadfde1/annotation-1.2.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.annotation/annotation/1.2.0/8945212022e5276658ab7864714ced3553ea724a/annotation-1.2.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_annotation_annotation_experimental_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_annotation_annotation_experimental_1_0_0_aar.xml
new file mode 100644
index 00000000..e5e82678
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_annotation_annotation_experimental_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.annotation:annotation-experimental:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b1826e082b884f9fc593d27a9580a45/annotation-experimental-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b1826e082b884f9fc593d27a9580a45/annotation-experimental-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b1826e082b884f9fc593d27a9580a45/annotation-experimental-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.annotation/annotation-experimental/1.0.0/2408f6cb8f31ffabdd88e1365f82914c251e44dc/annotation-experimental-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_appcompat_appcompat_1_3_1_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_appcompat_appcompat_1_3_1_aar.xml
new file mode 100644
index 00000000..7e822059
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_appcompat_appcompat_1_3_1_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.appcompat:appcompat:1.3.1@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.appcompat/appcompat/1.3.1/45a346a05e7ff27a01c59452379c5939cbb53c03/appcompat-1.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_appcompat_appcompat_resources_1_3_1_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_appcompat_appcompat_resources_1_3_1_aar.xml
new file mode 100644
index 00000000..cec8145b
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_appcompat_appcompat_resources_1_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.appcompat:appcompat-resources:1.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3f654904cfc98f4abc850208420106d3/appcompat-resources-1.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3f654904cfc98f4abc850208420106d3/appcompat-resources-1.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3f654904cfc98f4abc850208420106d3/appcompat-resources-1.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.appcompat/appcompat-resources/1.3.1/fa1169a9b404f7e905756330af6d13e27dcee50e/appcompat-resources-1.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_arch_core_core_common_2_1_0.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_arch_core_core_common_2_1_0.xml
new file mode 100644
index 00000000..22084152
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_arch_core_core_common_2_1_0.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.arch.core:core-common:2.1.0">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-common/2.1.0/b3152fc64428c9354344bd89848ecddc09b6f07e/core-common-2.1.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-common/2.1.0/80ac2d7c8e6400ce2fbc663cd1a7e1cbef38c4b8/core-common-2.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_0_0_aar.xml
new file mode 100644
index 00000000..edc58e23
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.arch.core:core-runtime:2.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/750b7b3e6ba5087b346f6e90470bbb4c/core-runtime-2.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/750b7b3e6ba5087b346f6e90470bbb4c/core-runtime-2.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/750b7b3e6ba5087b346f6e90470bbb4c/core-runtime-2.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-runtime/2.0.0/bc41b287c95bc50a3cd27cb1b7cfb301805ba7f1/core-runtime-2.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_1_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_1_0_aar.xml
new file mode 100644
index 00000000..85cce128
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.arch.core:core-runtime:2.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/69846ae0a25a5c26a4168a449d371740/core-runtime-2.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/69846ae0a25a5c26a4168a449d371740/core-runtime-2.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/69846ae0a25a5c26a4168a449d371740/core-runtime-2.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-runtime/2.1.0/f19886651c9946b39f83d8c184fd0e2ce9f43c16/core-runtime-2.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_cardview_cardview_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_cardview_cardview_1_0_0_aar.xml
new file mode 100644
index 00000000..309cc739
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_cardview_cardview_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.cardview:cardview:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/204d56b624e751e7990ccfa8a11e8889/cardview-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/204d56b624e751e7990ccfa8a11e8889/cardview-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/204d56b624e751e7990ccfa8a11e8889/cardview-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.cardview/cardview/1.0.0/c9f3ce7ca74ad2c978230f4094ba6804c5166f9c/cardview-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_collection_collection_1_1_0.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_collection_collection_1_1_0.xml
new file mode 100644
index 00000000..eafc05e9
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_collection_collection_1_1_0.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.collection:collection:1.1.0">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.collection/collection/1.1.0/1f27220b47669781457de0d600849a5de0e89909/collection-1.1.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.collection/collection/1.1.0/bae67b0019fbb38498198fcc2d0282a340b71c5b/collection-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_constraintlayout_constraintlayout_2_1_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_constraintlayout_constraintlayout_2_1_0_aar.xml
new file mode 100644
index 00000000..d156bd81
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_constraintlayout_constraintlayout_2_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.constraintlayout:constraintlayout:2.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e0f2c8bfb3f4e90e7e3551239c93e924/constraintlayout-2.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e0f2c8bfb3f4e90e7e3551239c93e924/constraintlayout-2.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e0f2c8bfb3f4e90e7e3551239c93e924/constraintlayout-2.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.constraintlayout/constraintlayout/2.1.0/53df642f9d86b4432aad51ed61b5c5ea05c8afa2/constraintlayout-2.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_coordinatorlayout_coordinatorlayout_1_1_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_coordinatorlayout_coordinatorlayout_1_1_0_aar.xml
new file mode 100644
index 00000000..ce613794
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_coordinatorlayout_coordinatorlayout_1_1_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.coordinatorlayout:coordinatorlayout:1.1.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.coordinatorlayout/coordinatorlayout/1.1.0/a15529ac349d76a872ae5ef42b84c320c456cd7f/coordinatorlayout-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_core_core_1_5_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_core_core_1_5_0_aar.xml
new file mode 100644
index 00000000..d7795435
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_core_core_1_5_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.core:core:1.5.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.core/core/1.5.0/b59df19e06f42e39b6d6ee97b2a1e42fd7c88204/core-1.5.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_cursoradapter_cursoradapter_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_cursoradapter_cursoradapter_1_0_0_aar.xml
new file mode 100644
index 00000000..bcf3d0c8
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_cursoradapter_cursoradapter_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.cursoradapter:cursoradapter:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9f5395c9e2c4a1a11a43e64f5d81258c/cursoradapter-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9f5395c9e2c4a1a11a43e64f5d81258c/cursoradapter-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9f5395c9e2c4a1a11a43e64f5d81258c/cursoradapter-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.cursoradapter/cursoradapter/1.0.0/1e323083b41c31fd4d45510dfce50614963c3c6c/cursoradapter-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_customview_customview_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_customview_customview_1_0_0_aar.xml
new file mode 100644
index 00000000..68376951
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_customview_customview_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.customview:customview:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3438716bbde0c4ae93b6b3ca42413f5c/customview-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3438716bbde0c4ae93b6b3ca42413f5c/customview-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3438716bbde0c4ae93b6b3ca42413f5c/customview-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.customview/customview/1.0.0/61f6a717d144dff3a6bda413d9abeeb2bca71581/customview-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_documentfile_documentfile_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_documentfile_documentfile_1_0_0_aar.xml
new file mode 100644
index 00000000..79035401
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_documentfile_documentfile_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.documentfile:documentfile:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/815bb9272ee789daabc21bc15b42e2c3/documentfile-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/815bb9272ee789daabc21bc15b42e2c3/documentfile-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/815bb9272ee789daabc21bc15b42e2c3/documentfile-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.documentfile/documentfile/1.0.0/a1bed5cf96db96bd06a2feade98fe55653811dc8/documentfile-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_drawerlayout_drawerlayout_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_drawerlayout_drawerlayout_1_0_0_aar.xml
new file mode 100644
index 00000000..8467f241
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_drawerlayout_drawerlayout_1_0_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.drawerlayout:drawerlayout:1.0.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.drawerlayout/drawerlayout/1.0.0/9ecd4ecb7da215ba4c5c3e00bf8d290dad6f2bc5/drawerlayout-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_dynamicanimation_dynamicanimation_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_dynamicanimation_dynamicanimation_1_0_0_aar.xml
new file mode 100644
index 00000000..b0d2ebc8
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_dynamicanimation_dynamicanimation_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.dynamicanimation:dynamicanimation:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a51e1b63de109d5a073479324f6b9a1c/dynamicanimation-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a51e1b63de109d5a073479324f6b9a1c/dynamicanimation-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a51e1b63de109d5a073479324f6b9a1c/dynamicanimation-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.dynamicanimation/dynamicanimation/1.0.0/5c050e29af5033ff5e2d58ccf657ae92fdfbda4a/dynamicanimation-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_fragment_fragment_1_3_6_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_fragment_fragment_1_3_6_aar.xml
new file mode 100644
index 00000000..cfe0da22
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_fragment_fragment_1_3_6_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.fragment:fragment:1.3.6@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.fragment/fragment/1.3.6/25ece06338d39da1fdc9d8488aa57b5014866918/fragment-1.3.6-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_interpolator_interpolator_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_interpolator_interpolator_1_0_0_aar.xml
new file mode 100644
index 00000000..1d3d6d4a
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_interpolator_interpolator_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.interpolator:interpolator:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a81ff3a6f4fe4cdba627ce49c2369465/interpolator-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a81ff3a6f4fe4cdba627ce49c2369465/interpolator-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a81ff3a6f4fe4cdba627ce49c2369465/interpolator-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.interpolator/interpolator/1.0.0/fefd5e3cbc479b6b4a9532d05688a1e659e8d3d2/interpolator-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_legacy_legacy_support_core_utils_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_legacy_legacy_support_core_utils_1_0_0_aar.xml
new file mode 100644
index 00000000..2f6eb99f
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_legacy_legacy_support_core_utils_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.legacy:legacy-support-core-utils:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1e3214591e5f847e6b5b2333c34f548f/legacy-support-core-utils-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1e3214591e5f847e6b5b2333c34f548f/legacy-support-core-utils-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1e3214591e5f847e6b5b2333c34f548f/legacy-support-core-utils-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.legacy/legacy-support-core-utils/1.0.0/46c37f178088153618cfb0afef08ec96c48f93cb/legacy-support-core-utils-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_common_2_3_1.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_common_2_3_1.xml
new file mode 100644
index 00000000..a1e19120
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_common_2_3_1.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-common:2.3.1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-common/2.3.1/fc466261d52f4433863642fb40d12441ae274a98/lifecycle-common-2.3.1.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-common/2.3.1/36a4f870521a07778cf045be0274793c6298ec6/lifecycle-common-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_2_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_2_0_0_aar.xml
new file mode 100644
index 00000000..8e3202c4
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_2_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-livedata:2.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e3a7d3b723deff8b2b903c0665652c62/lifecycle-livedata-2.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e3a7d3b723deff8b2b903c0665652c62/lifecycle-livedata-2.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e3a7d3b723deff8b2b903c0665652c62/lifecycle-livedata-2.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-livedata/2.0.0/740ce61935bd789380c01178bd8ce402402ebd2f/lifecycle-livedata-2.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_core_2_3_1_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_core_2_3_1_aar.xml
new file mode 100644
index 00000000..64c3e446
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_core_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-livedata-core:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/475447259d8237c8605745086fc55597/lifecycle-livedata-core-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/475447259d8237c8605745086fc55597/lifecycle-livedata-core-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/475447259d8237c8605745086fc55597/lifecycle-livedata-core-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-livedata-core/2.3.1/38ecd5651d87b6db994df01f93fc72d6e59b846a/lifecycle-livedata-core-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_runtime_2_3_1_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_runtime_2_3_1_aar.xml
new file mode 100644
index 00000000..57ed31f1
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_runtime_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-runtime:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5b22b0456eb746581b5b739357fde86e/lifecycle-runtime-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5b22b0456eb746581b5b739357fde86e/lifecycle-runtime-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5b22b0456eb746581b5b739357fde86e/lifecycle-runtime-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-runtime/2.3.1/ae7040cf314de81d20ac69f28f5ab6c9a2c0d1ab/lifecycle-runtime-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_2_3_1_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_2_3_1_aar.xml
new file mode 100644
index 00000000..89175985
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-viewmodel:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/2173da8f0e3b2f5d6ed51ddfa294cf15/lifecycle-viewmodel-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/2173da8f0e3b2f5d6ed51ddfa294cf15/lifecycle-viewmodel-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/2173da8f0e3b2f5d6ed51ddfa294cf15/lifecycle-viewmodel-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-viewmodel/2.3.1/55d6fa3541ca02167b0bd62a16fbdaec2a71622/lifecycle-viewmodel-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_savedstate_2_3_1_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_savedstate_2_3_1_aar.xml
new file mode 100644
index 00000000..2b8192f5
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_savedstate_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-viewmodel-savedstate:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d2ff709217adbaee68cbce4e138923f2/lifecycle-viewmodel-savedstate-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d2ff709217adbaee68cbce4e138923f2/lifecycle-viewmodel-savedstate-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d2ff709217adbaee68cbce4e138923f2/lifecycle-viewmodel-savedstate-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-viewmodel-savedstate/2.3.1/411f92301435123d502de27b6f3262c062f3bd7a/lifecycle-viewmodel-savedstate-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_loader_loader_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_loader_loader_1_0_0_aar.xml
new file mode 100644
index 00000000..906ad697
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_loader_loader_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.loader:loader:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/818f45328ee8f5b99bad88c27c6cc009/loader-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/818f45328ee8f5b99bad88c27c6cc009/loader-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/818f45328ee8f5b99bad88c27c6cc009/loader-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.loader/loader/1.0.0/b9ef587f3e46c7fe5b00264989764e43ff45cada/loader-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_localbroadcastmanager_localbroadcastmanager_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_localbroadcastmanager_localbroadcastmanager_1_0_0_aar.xml
new file mode 100644
index 00000000..5180a041
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_localbroadcastmanager_localbroadcastmanager_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.localbroadcastmanager:localbroadcastmanager:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b93e2b8a7319b8231fdc1936a598b860/localbroadcastmanager-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b93e2b8a7319b8231fdc1936a598b860/localbroadcastmanager-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b93e2b8a7319b8231fdc1936a598b860/localbroadcastmanager-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.localbroadcastmanager/localbroadcastmanager/1.0.0/3930e99159fd6b7f1d2e7d5fe9af0924ca1faf9/localbroadcastmanager-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_print_print_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_print_print_1_0_0_aar.xml
new file mode 100644
index 00000000..fa1aa068
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_print_print_1_0_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.print:print:1.0.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.print/print/1.0.0/71fc2d9acf7cce6b96230c5af263268b1664914a/print-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_recyclerview_recyclerview_1_1_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_recyclerview_recyclerview_1_1_0_aar.xml
new file mode 100644
index 00000000..bdd817e8
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_recyclerview_recyclerview_1_1_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.recyclerview:recyclerview:1.1.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.recyclerview/recyclerview/1.1.0/f2bdf79e1977939817f54a9d3e2f6bc52b63bdd0/recyclerview-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_savedstate_savedstate_1_1_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_savedstate_savedstate_1_1_0_aar.xml
new file mode 100644
index 00000000..9878a838
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_savedstate_savedstate_1_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.savedstate:savedstate:1.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b3cfbfb1b9d3c28903be03b381ffe5a1/savedstate-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b3cfbfb1b9d3c28903be03b381ffe5a1/savedstate-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b3cfbfb1b9d3c28903be03b381ffe5a1/savedstate-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.savedstate/savedstate/1.1.0/73464c2c55129727354a95ffa91dc9c2cf0c78b/savedstate-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_core_1_4_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_core_1_4_0_aar.xml
new file mode 100644
index 00000000..d68fc073
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_core_1_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test:core:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d391507829b11424361d4065fee5049c/core-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d391507829b11424361d4065fee5049c/core-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d391507829b11424361d4065fee5049c/core-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/core/1.4.0/96b4d161def059d92989a352500d05d215c33d5e/core-1.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/core/1.4.0/2ba6b5cb5392cc99bdc6fb1f188c95497358fb62/core-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_espresso_espresso_core_3_4_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_espresso_espresso_core_3_4_0_aar.xml
new file mode 100644
index 00000000..c9edeb37
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_espresso_espresso_core_3_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.espresso:espresso-core:3.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/29c676728f0270598991f2d3f9e0a108/espresso-core-3.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/29c676728f0270598991f2d3f9e0a108/espresso-core-3.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/29c676728f0270598991f2d3f9e0a108/espresso-core-3.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-core/3.4.0/527848e2722cd3ada150b991c0e620ec4f0a8b/espresso-core-3.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-core/3.4.0/8c2dc35c200b749281e0fbdc1262359e19a99cc3/espresso-core-3.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_espresso_espresso_idling_resource_3_4_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_espresso_espresso_idling_resource_3_4_0_aar.xml
new file mode 100644
index 00000000..37863515
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_espresso_espresso_idling_resource_3_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.espresso:espresso-idling-resource:3.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/97f635e023276073e65bb6220759b19e/espresso-idling-resource-3.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/97f635e023276073e65bb6220759b19e/espresso-idling-resource-3.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/97f635e023276073e65bb6220759b19e/espresso-idling-resource-3.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-idling-resource/3.4.0/69a300fcf8de2c433672d07a6c436a19dfb9b8f9/espresso-idling-resource-3.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-idling-resource/3.4.0/80fd2aa3695bf9e0383d53f2f39016960a0156a6/espresso-idling-resource-3.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_ext_junit_1_1_3_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_ext_junit_1_1_3_aar.xml
new file mode 100644
index 00000000..2de87d92
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_ext_junit_1_1_3_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.ext:junit:1.1.3@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1d0a8c40270d0f872a223d8d4fcef6a7/junit-1.1.3/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1d0a8c40270d0f872a223d8d4fcef6a7/junit-1.1.3/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1d0a8c40270d0f872a223d8d4fcef6a7/junit-1.1.3/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.ext/junit/1.1.3/f138cf897cc1e024dd714073df04f2425d845104/junit-1.1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.ext/junit/1.1.3/cdf059d469527681d62d3330131eb875b77911d5/junit-1.1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_monitor_1_4_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_monitor_1_4_0_aar.xml
new file mode 100644
index 00000000..56b2b14c
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_monitor_1_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test:monitor:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/4dd63116c82307e666318756b46c6f8f/monitor-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/4dd63116c82307e666318756b46c6f8f/monitor-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/4dd63116c82307e666318756b46c6f8f/monitor-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/monitor/1.4.0/2770e38fa6d39242c2fa2e9d2ca3275b1d9debd8/monitor-1.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/monitor/1.4.0/5d892d39aae695079e3ecc7a841336ff3aeaf40/monitor-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_runner_1_4_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_runner_1_4_0_aar.xml
new file mode 100644
index 00000000..49fdf446
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_runner_1_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test:runner:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8432b5c7b397613f563c0e4f808b7a60/runner-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8432b5c7b397613f563c0e4f808b7a60/runner-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8432b5c7b397613f563c0e4f808b7a60/runner-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/runner/1.4.0/aee6a62a26d9b413dadc1732e66cc4ef3bcf9d61/runner-1.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/runner/1.4.0/11ef580a9f2ea2fba4d060a3121506197bd6b183/runner-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_services_storage_1_4_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_services_storage_1_4_0_aar.xml
new file mode 100644
index 00000000..b3d37127
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_test_services_storage_1_4_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.services:storage:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cab7427031340e655b498850dc34743e/storage-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cab7427031340e655b498850dc34743e/storage-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cab7427031340e655b498850dc34743e/storage-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.services/storage/1.4.0/27088f46bc0ab94523a20ccc56aa27e142662396/storage-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_transition_transition_1_2_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_transition_transition_1_2_0_aar.xml
new file mode 100644
index 00000000..b8df611c
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_transition_transition_1_2_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.transition:transition:1.2.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.transition/transition/1.2.0/65d2a5dab39f120d3f584fdead252ce81ec7dbee/transition-1.2.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_1_1_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_1_1_0_aar.xml
new file mode 100644
index 00000000..80d26425
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_1_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.vectordrawable:vectordrawable:1.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d9a1f9c79beb812a29c08dec8e929987/vectordrawable-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d9a1f9c79beb812a29c08dec8e929987/vectordrawable-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d9a1f9c79beb812a29c08dec8e929987/vectordrawable-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.vectordrawable/vectordrawable/1.1.0/1e0694477eed874c50c54b547cc3e5a62a57a62b/vectordrawable-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_animated_1_1_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_animated_1_1_0_aar.xml
new file mode 100644
index 00000000..9ae57f62
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_animated_1_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.vectordrawable:vectordrawable-animated:1.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8265d5cb033aea9b3b2b59393038f53/vectordrawable-animated-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8265d5cb033aea9b3b2b59393038f53/vectordrawable-animated-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8265d5cb033aea9b3b2b59393038f53/vectordrawable-animated-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.vectordrawable/vectordrawable-animated/1.1.0/871a7705cd03bc246947638c712cdd11378233ff/vectordrawable-animated-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_versionedparcelable_versionedparcelable_1_1_1_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_versionedparcelable_versionedparcelable_1_1_1_aar.xml
new file mode 100644
index 00000000..df200125
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_versionedparcelable_versionedparcelable_1_1_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.versionedparcelable:versionedparcelable:1.1.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9c1a19876166723a3f4a522f5e580c9e/versionedparcelable-1.1.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9c1a19876166723a3f4a522f5e580c9e/versionedparcelable-1.1.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9c1a19876166723a3f4a522f5e580c9e/versionedparcelable-1.1.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.versionedparcelable/versionedparcelable/1.1.1/d9085927216387af679d18b6f472bc0fc5c7cc81/versionedparcelable-1.1.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_viewpager2_viewpager2_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_viewpager2_viewpager2_1_0_0_aar.xml
new file mode 100644
index 00000000..d4ae1779
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_viewpager2_viewpager2_1_0_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.viewpager2:viewpager2:1.0.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.viewpager2/viewpager2/1.0.0/3c3569044e6969f1ee5c3aa03b08e6717a2d782f/viewpager2-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_viewpager_viewpager_1_0_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_viewpager_viewpager_1_0_0_aar.xml
new file mode 100644
index 00000000..65ed8399
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__androidx_viewpager_viewpager_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.viewpager:viewpager:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b9a8ccdf08677e6ebe8a29448e9bae04/viewpager-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b9a8ccdf08677e6ebe8a29448e9bae04/viewpager-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b9a8ccdf08677e6ebe8a29448e9bae04/viewpager-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.viewpager/viewpager/1.0.0/db045f92188b9d247d5f556866f8861ab68528f0/viewpager-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__com_google_android_material_material_1_4_0_aar.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__com_google_android_material_material_1_4_0_aar.xml
new file mode 100644
index 00000000..e7f0e822
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__com_google_android_material_material_1_4_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: com.google.android.material:material:1.4.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.google.android.material/material/1.4.0/51035a8f6342c20d4d8f242d100e6f25e0c271ac/material-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__com_google_code_findbugs_jsr305_2_0_1.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__com_google_code_findbugs_jsr305_2_0_1.xml
new file mode 100644
index 00000000..2b834ea2
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__com_google_code_findbugs_jsr305_2_0_1.xml
@@ -0,0 +1,9 @@
+<component name="libraryTable">
+  <library name="Gradle: com.google.code.findbugs:jsr305:2.0.1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.google.code.findbugs/jsr305/2.0.1/516c03b21d50a644d538de0f0369c620989cd8f0/jsr305-2.0.1.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__com_squareup_javawriter_2_1_1.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__com_squareup_javawriter_2_1_1.xml
new file mode 100644
index 00000000..662b001e
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__com_squareup_javawriter_2_1_1.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: com.squareup:javawriter:2.1.1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.squareup/javawriter/2.1.1/67ff45d9ae02e583d0f9b3432a5ebbe05c30c966/javawriter-2.1.1.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.squareup/javawriter/2.1.1/f591a105db78771d0a1e7a277b3747556c528c22/javawriter-2.1.1-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.squareup/javawriter/2.1.1/5b31387d839a5cdaf5b6de3990da01f7f2b963c5/javawriter-2.1.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__javax_inject_javax_inject_1.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__javax_inject_javax_inject_1.xml
new file mode 100644
index 00000000..62012eaf
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__javax_inject_javax_inject_1.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: javax.inject:javax.inject:1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/javax.inject/javax.inject/1/6975da39a7040257bd51d21a231b76c915872d38/javax.inject-1.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/javax.inject/javax.inject/1/70ec961c25111ed9015d1af77772d96383c2d238/javax.inject-1-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/javax.inject/javax.inject/1/a00123f261762a7c5e0ec916a2c7c8298d29c400/javax.inject-1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__junit_junit_4_12.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__junit_junit_4_12.xml
new file mode 100644
index 00000000..6c078d62
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__junit_junit_4_12.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: junit:junit:4.12">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/2973d150c0dc1fefe998f834810d68f278ea58ec/junit-4.12.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/941a8be4506c65f0a9001c08812fb7da1e505e21/junit-4.12-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/a6c32b40bf3d76eca54e3c601e5d1470c86fcdfa/junit-4.12-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__junit_junit_4_13_2.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__junit_junit_4_13_2.xml
new file mode 100644
index 00000000..c2cb45da
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__junit_junit_4_13_2.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: junit:junit:4.13.2">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.13.2/8ac9e16d933b6fb43bc7f576336b8f4d7eb5ba12/junit-4.13.2.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.13.2/f2f3f384dacd2ade2ddf7aa7e0f4360dfee38672/junit-4.13.2-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.13.2/33987872a811fe4d4001ed494b07854822257f42/junit-4.13.2-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3.xml
new file mode 100644
index 00000000..09cf23d1
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: org.hamcrest:hamcrest-core:1.3">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/42a25dc3219429f0e5d060061f71acb49bf010a0/hamcrest-core-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/ad09811315f1d4f5756986575b0ea16b99cd686f/hamcrest-core-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/1dc37250fbc78e23a65a67fbbaf71d2e9cbc3c0b/hamcrest-core-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__org_hamcrest_hamcrest_integration_1_3.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__org_hamcrest_hamcrest_integration_1_3.xml
new file mode 100644
index 00000000..1a77dd83
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__org_hamcrest_hamcrest_integration_1_3.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: org.hamcrest:hamcrest-integration:1.3">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-integration/1.3/5de0c73fef18917cd85d0ab70bb23818685e4dfd/hamcrest-integration-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-integration/1.3/cc5884d4138d3376f574f6a3992acceedfc37bea/hamcrest-integration-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-integration/1.3/ae7787a563e6a1b1f17fd4ac43be3a3c8830cfda/hamcrest-integration-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__org_hamcrest_hamcrest_library_1_3.xml b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__org_hamcrest_hamcrest_library_1_3.xml
new file mode 100644
index 00000000..3d45e8e9
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/libraries/Gradle__org_hamcrest_hamcrest_library_1_3.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: org.hamcrest:hamcrest-library:1.3">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/4785a3c21320980282f9f33d0d1264a69040538f/hamcrest-library-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/4324046c5f99f3dc91b5370899fa3ae65fd137d2/hamcrest-library-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/47a7ee46628ab7133129cd7cef1e92657bc275e/hamcrest-library-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/modules.xml b/second/09_thread/SampleAsyncTask/.idea/modules.xml
new file mode 100644
index 00000000..863ff30e
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/modules.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/modules/SampleAsyncTask.iml" filepath="$PROJECT_DIR$/.idea/modules/SampleAsyncTask.iml" />
+      <module fileurl="file://$PROJECT_DIR$/.idea/modules/app/SampleAsyncTask.app.iml" filepath="$PROJECT_DIR$/.idea/modules/app/SampleAsyncTask.app.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/modules/SampleAsyncTask.iml b/second/09_thread/SampleAsyncTask/.idea/modules/SampleAsyncTask.iml
new file mode 100644
index 00000000..0ee0fc84
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/modules/SampleAsyncTask.iml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id="SampleAsyncTask" external.linked.project.path="$MODULE_DIR$/../.." external.root.project.path="$MODULE_DIR$/../.." external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="java-gradle" name="Java-Gradle">
+      <configuration>
+        <option name="BUILD_FOLDER_PATH" value="$MODULE_DIR$/../../build" />
+        <option name="BUILDABLE" value="false" />
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/../..">
+      <excludeFolder url="file://$MODULE_DIR$/../../.gradle" />
+      <excludeFolder url="file://$MODULE_DIR$/../../build" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/modules/app/SampleAsyncTask.app.iml b/second/09_thread/SampleAsyncTask/.idea/modules/app/SampleAsyncTask.app.iml
new file mode 100644
index 00000000..41206578
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/modules/app/SampleAsyncTask.app.iml
@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id=":app" external.linked.project.path="$MODULE_DIR$/../../../app" external.root.project.path="$MODULE_DIR$/../../.." external.system.id="GRADLE" external.system.module.group="SampleAsyncTask" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="android-gradle" name="Android-Gradle">
+      <configuration>
+        <option name="GRADLE_PROJECT_PATH" value=":app" />
+        <option name="LAST_SUCCESSFUL_SYNC_AGP_VERSION" value="4.2.2" />
+        <option name="LAST_KNOWN_AGP_VERSION" value="4.2.2" />
+      </configuration>
+    </facet>
+    <facet type="android" name="Android">
+      <configuration>
+        <option name="SELECTED_BUILD_VARIANT" value="debug" />
+        <option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
+        <option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
+        <afterSyncTasks>
+          <task>generateDebugSources</task>
+        </afterSyncTasks>
+        <option name="ALLOW_USER_CONFIGURATION" value="false" />
+        <option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
+        <option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
+        <option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/../../../app/src/main/res;file://$MODULE_DIR$/../../../app/src/debug/res;file://$MODULE_DIR$/../../../app/build/generated/res/rs/debug;file://$MODULE_DIR$/../../../app/build/generated/res/resValues/debug" />
+        <option name="TEST_RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/../../../app/src/androidTest/res;file://$MODULE_DIR$/../../../app/src/androidTestDebug/res;file://$MODULE_DIR$/../../../app/build/generated/res/rs/androidTest/debug;file://$MODULE_DIR$/../../../app/build/generated/res/resValues/androidTest/debug" />
+        <option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output url="file://$MODULE_DIR$/../../../app/build/intermediates/javac/debug/classes" />
+    <output-test url="file://$MODULE_DIR$/../../../app/build/intermediates/javac/debugUnitTest/classes" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/../../../app">
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/androidTest/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/test/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/main/res" type="java-resource" />
+      <excludeFolder url="file://$MODULE_DIR$/../../../app/.gradle" />
+      <excludeFolder url="file://$MODULE_DIR$/../../../app/build" />
+    </content>
+    <orderEntry type="jdk" jdkName="Android API 30 Platform" jdkType="Android SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="TEST" name="Gradle: junit:junit:4.13.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: org.hamcrest:hamcrest-core:1.3" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: junit:junit:4.12" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: org.hamcrest:hamcrest-integration:1.3" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: org.hamcrest:hamcrest-library:1.3" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: com.google.code.findbugs:jsr305:2.0.1" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: com.squareup:javawriter:2.1.1" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: javax.inject:javax.inject:1" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test.ext:junit:1.1.3@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test.espresso:espresso-core:3.4.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test:runner:1.4.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test:core:1.4.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test.services:storage:1.4.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test:monitor:1.4.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.arch.core:core-runtime:2.0.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test.espresso:espresso-idling-resource:3.4.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.collection:collection:1.1.0" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-common:2.3.1" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.arch.core:core-common:2.1.0" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.annotation:annotation:1.2.0" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.android.material:material:1.4.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.appcompat:appcompat:1.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.viewpager2:viewpager2:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.fragment:fragment:1.3.6@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.activity:activity:1.2.4@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.appcompat:appcompat-resources:1.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.drawerlayout:drawerlayout:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.coordinatorlayout:coordinatorlayout:1.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.dynamicanimation:dynamicanimation:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.recyclerview:recyclerview:1.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.transition:transition:1.2.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.vectordrawable:vectordrawable-animated:1.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.vectordrawable:vectordrawable:1.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.viewpager:viewpager:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.legacy:legacy-support-core-utils:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.loader:loader:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.customview:customview:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.core:core:1.5.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.cursoradapter:cursoradapter:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-viewmodel-savedstate:2.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.savedstate:savedstate:1.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.cardview:cardview:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-runtime:2.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.versionedparcelable:versionedparcelable:1.1.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-viewmodel:2.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-livedata:2.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-livedata-core:2.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.arch.core:core-runtime:2.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.interpolator:interpolator:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.documentfile:documentfile:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.localbroadcastmanager:localbroadcastmanager:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.print:print:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.annotation:annotation-experimental:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.constraintlayout:constraintlayout:2.1.0@aar" level="project" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/.idea/workspace.xml b/second/09_thread/SampleAsyncTask/.idea/workspace.xml
new file mode 100644
index 00000000..fd0125ec
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/.idea/workspace.xml
@@ -0,0 +1,156 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AndroidLayouts">
+    <shared>
+      <config />
+    </shared>
+  </component>
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="NONE" />
+  </component>
+  <component name="BranchesTreeState">
+    <expand>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="LOCAL_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="LOCAL_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:second" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:origin" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:origin" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:second" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+    </expand>
+    <select />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="b2f4fd63-6084-4194-b73e-36129431b279" name="Default Changelist" comment="" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="ExecutionTargetManager" SELECTED_TARGET="device_and_snapshot_combo_box_target[VirtualDevicePath@/Users/jjuyaa/.android/avd/Pixel_3a_API_30_x86.avd]" />
+  <component name="ExternalProjectsData">
+    <projectState path="$PROJECT_DIR$">
+      <ProjectState />
+    </projectState>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$/../../.." />
+  </component>
+  <component name="ProjectId" id="1wvJupEKuTBLeEAIaYsFJfRjvop" />
+  <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent">
+    <property name="RunOnceActivity.OpenProjectViewOnStart" value="true" />
+    <property name="memory.settings.postsync.last.time.stamp" value="1629333370127" />
+    <property name="settings.editor.selected.configurable" value="AndroidSdkUpdater" />
+  </component>
+  <component name="RunManager">
+    <configuration default="true" type="AndroidJUnit" factoryName="Android JUnit">
+      <option name="TEST_OBJECT" value="class" />
+      <option name="WORKING_DIRECTORY" value="$MODULE_DIR$" />
+      <method v="2">
+        <option name="Android.Gradle.BeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="app" type="AndroidRunConfigurationType" factoryName="Android App">
+      <module name="SampleAsyncTask.app" />
+      <option name="DEPLOY" value="true" />
+      <option name="DEPLOY_APK_FROM_BUNDLE" value="false" />
+      <option name="DEPLOY_AS_INSTANT" value="false" />
+      <option name="ARTIFACT_NAME" value="" />
+      <option name="PM_INSTALL_OPTIONS" value="" />
+      <option name="ALL_USERS" value="false" />
+      <option name="ALWAYS_INSTALL_WITH_PM" value="false" />
+      <option name="DYNAMIC_FEATURES_DISABLED_LIST" value="" />
+      <option name="ACTIVITY_EXTRA_FLAGS" value="" />
+      <option name="MODE" value="default_activity" />
+      <option name="CLEAR_LOGCAT" value="false" />
+      <option name="SHOW_LOGCAT_AUTOMATICALLY" value="false" />
+      <option name="SKIP_NOOP_APK_INSTALLATIONS" value="true" />
+      <option name="FORCE_STOP_RUNNING_APP" value="true" />
+      <option name="TARGET_SELECTION_MODE" value="DEVICE_AND_SNAPSHOT_COMBO_BOX" />
+      <option name="SELECTED_CLOUD_MATRIX_CONFIGURATION_ID" value="-1" />
+      <option name="SELECTED_CLOUD_MATRIX_PROJECT_ID" value="" />
+      <option name="DEBUGGER_TYPE" value="Auto" />
+      <Auto>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Auto>
+      <Hybrid>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Hybrid>
+      <Java />
+      <Native>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Native>
+      <Profilers>
+        <option name="ADVANCED_PROFILING_ENABLED" value="false" />
+        <option name="STARTUP_PROFILING_ENABLED" value="false" />
+        <option name="STARTUP_CPU_PROFILING_ENABLED" value="false" />
+        <option name="STARTUP_CPU_PROFILING_CONFIGURATION_NAME" value="Sample Java Methods" />
+        <option name="STARTUP_NATIVE_MEMORY_PROFILING_ENABLED" value="false" />
+        <option name="NATIVE_MEMORY_SAMPLE_RATE_BYTES" value="2048" />
+      </Profilers>
+      <option name="DEEP_LINK" value="" />
+      <option name="ACTIVITY_CLASS" value="" />
+      <option name="SEARCH_ACTIVITY_IN_GLOBAL_SCOPE" value="false" />
+      <option name="SKIP_ACTIVITY_VALIDATION" value="false" />
+      <method v="2">
+        <option name="Android.Gradle.BeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+  </component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="b2f4fd63-6084-4194-b73e-36129431b279" name="Default Changelist" comment="" />
+      <created>1629333354456</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1629333354456</updated>
+    </task>
+    <servers />
+  </component>
+  <component name="Vcs.Log.Tabs.Properties">
+    <option name="TAB_STATES">
+      <map>
+        <entry key="MAIN">
+          <value>
+            <State />
+          </value>
+        </entry>
+      </map>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/09_thread/SampleAsyncTask/local.properties b/second/09_thread/SampleAsyncTask/local.properties
new file mode 100644
index 00000000..0c001059
--- /dev/null
+++ b/second/09_thread/SampleAsyncTask/local.properties
@@ -0,0 +1,10 @@
+## This file is automatically generated by Android Studio.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file should *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+#
+# Location of the SDK. This is only used by Gradle.
+# For customization when using a Version Control System, please read the
+# header note.
+sdk.dir=/Users/jjuyaa/Library/Android/sdk
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.gradle/6.7.1/fileChanges/last-build.bin b/second/09_thread/SampleLooper/.gradle/6.7.1/fileChanges/last-build.bin
new file mode 100644
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new file mode 100644
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Binary files /dev/null and b/second/09_thread/SampleLooper/.gradle/6.7.1/fileHashes/fileHashes.bin differ
diff --git a/second/09_thread/SampleLooper/.gradle/6.7.1/fileHashes/fileHashes.lock b/second/09_thread/SampleLooper/.gradle/6.7.1/fileHashes/fileHashes.lock
new file mode 100644
index 00000000..bce0b41f
Binary files /dev/null and b/second/09_thread/SampleLooper/.gradle/6.7.1/fileHashes/fileHashes.lock differ
diff --git a/second/09_thread/SampleLooper/.gradle/6.7.1/gc.properties b/second/09_thread/SampleLooper/.gradle/6.7.1/gc.properties
new file mode 100644
index 00000000..e69de29b
diff --git a/second/09_thread/SampleLooper/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/second/09_thread/SampleLooper/.gradle/buildOutputCleanup/buildOutputCleanup.lock
new file mode 100644
index 00000000..290105a0
Binary files /dev/null and b/second/09_thread/SampleLooper/.gradle/buildOutputCleanup/buildOutputCleanup.lock differ
diff --git a/second/09_thread/SampleLooper/.gradle/buildOutputCleanup/cache.properties b/second/09_thread/SampleLooper/.gradle/buildOutputCleanup/cache.properties
new file mode 100644
index 00000000..61c35d38
--- /dev/null
+++ b/second/09_thread/SampleLooper/.gradle/buildOutputCleanup/cache.properties
@@ -0,0 +1,2 @@
+#Thu Aug 19 09:20:40 KST 2021
+gradle.version=6.7.1
diff --git a/second/09_thread/SampleLooper/.gradle/checksums/checksums.lock b/second/09_thread/SampleLooper/.gradle/checksums/checksums.lock
new file mode 100644
index 00000000..3c769fdc
Binary files /dev/null and b/second/09_thread/SampleLooper/.gradle/checksums/checksums.lock differ
diff --git a/second/09_thread/SampleLooper/.gradle/configuration-cache/gc.properties b/second/09_thread/SampleLooper/.gradle/configuration-cache/gc.properties
new file mode 100644
index 00000000..e69de29b
diff --git a/second/09_thread/SampleLooper/.gradle/vcs-1/gc.properties b/second/09_thread/SampleLooper/.gradle/vcs-1/gc.properties
new file mode 100644
index 00000000..e69de29b
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_activity_activity_1_2_4_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_activity_activity_1_2_4_aar.xml
new file mode 100644
index 00000000..f29bccc1
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_activity_activity_1_2_4_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.activity:activity:1.2.4@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.activity/activity/1.2.4/2572345ff3e71e4e97140b01423cb80765b5b3e5/activity-1.2.4-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_annotation_annotation_1_2_0.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_annotation_annotation_1_2_0.xml
new file mode 100644
index 00000000..74437d76
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_annotation_annotation_1_2_0.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.annotation:annotation:1.2.0">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.annotation/annotation/1.2.0/57136ff68ee784c6e19db34ed4a175338fadfde1/annotation-1.2.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.annotation/annotation/1.2.0/8945212022e5276658ab7864714ced3553ea724a/annotation-1.2.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_annotation_annotation_experimental_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_annotation_annotation_experimental_1_0_0_aar.xml
new file mode 100644
index 00000000..e5e82678
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_annotation_annotation_experimental_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.annotation:annotation-experimental:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b1826e082b884f9fc593d27a9580a45/annotation-experimental-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b1826e082b884f9fc593d27a9580a45/annotation-experimental-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b1826e082b884f9fc593d27a9580a45/annotation-experimental-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.annotation/annotation-experimental/1.0.0/2408f6cb8f31ffabdd88e1365f82914c251e44dc/annotation-experimental-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_appcompat_appcompat_1_3_1_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_appcompat_appcompat_1_3_1_aar.xml
new file mode 100644
index 00000000..7e822059
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_appcompat_appcompat_1_3_1_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.appcompat:appcompat:1.3.1@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.appcompat/appcompat/1.3.1/45a346a05e7ff27a01c59452379c5939cbb53c03/appcompat-1.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_appcompat_appcompat_resources_1_3_1_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_appcompat_appcompat_resources_1_3_1_aar.xml
new file mode 100644
index 00000000..cec8145b
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_appcompat_appcompat_resources_1_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.appcompat:appcompat-resources:1.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3f654904cfc98f4abc850208420106d3/appcompat-resources-1.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3f654904cfc98f4abc850208420106d3/appcompat-resources-1.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3f654904cfc98f4abc850208420106d3/appcompat-resources-1.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.appcompat/appcompat-resources/1.3.1/fa1169a9b404f7e905756330af6d13e27dcee50e/appcompat-resources-1.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_arch_core_core_common_2_1_0.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_arch_core_core_common_2_1_0.xml
new file mode 100644
index 00000000..22084152
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_arch_core_core_common_2_1_0.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.arch.core:core-common:2.1.0">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-common/2.1.0/b3152fc64428c9354344bd89848ecddc09b6f07e/core-common-2.1.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-common/2.1.0/80ac2d7c8e6400ce2fbc663cd1a7e1cbef38c4b8/core-common-2.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_0_0_aar.xml
new file mode 100644
index 00000000..edc58e23
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.arch.core:core-runtime:2.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/750b7b3e6ba5087b346f6e90470bbb4c/core-runtime-2.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/750b7b3e6ba5087b346f6e90470bbb4c/core-runtime-2.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/750b7b3e6ba5087b346f6e90470bbb4c/core-runtime-2.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-runtime/2.0.0/bc41b287c95bc50a3cd27cb1b7cfb301805ba7f1/core-runtime-2.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_1_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_1_0_aar.xml
new file mode 100644
index 00000000..85cce128
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.arch.core:core-runtime:2.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/69846ae0a25a5c26a4168a449d371740/core-runtime-2.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/69846ae0a25a5c26a4168a449d371740/core-runtime-2.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/69846ae0a25a5c26a4168a449d371740/core-runtime-2.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-runtime/2.1.0/f19886651c9946b39f83d8c184fd0e2ce9f43c16/core-runtime-2.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_cardview_cardview_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_cardview_cardview_1_0_0_aar.xml
new file mode 100644
index 00000000..309cc739
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_cardview_cardview_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.cardview:cardview:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/204d56b624e751e7990ccfa8a11e8889/cardview-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/204d56b624e751e7990ccfa8a11e8889/cardview-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/204d56b624e751e7990ccfa8a11e8889/cardview-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.cardview/cardview/1.0.0/c9f3ce7ca74ad2c978230f4094ba6804c5166f9c/cardview-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_collection_collection_1_1_0.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_collection_collection_1_1_0.xml
new file mode 100644
index 00000000..eafc05e9
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_collection_collection_1_1_0.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.collection:collection:1.1.0">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.collection/collection/1.1.0/1f27220b47669781457de0d600849a5de0e89909/collection-1.1.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.collection/collection/1.1.0/bae67b0019fbb38498198fcc2d0282a340b71c5b/collection-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_constraintlayout_constraintlayout_2_1_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_constraintlayout_constraintlayout_2_1_0_aar.xml
new file mode 100644
index 00000000..d156bd81
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_constraintlayout_constraintlayout_2_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.constraintlayout:constraintlayout:2.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e0f2c8bfb3f4e90e7e3551239c93e924/constraintlayout-2.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e0f2c8bfb3f4e90e7e3551239c93e924/constraintlayout-2.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e0f2c8bfb3f4e90e7e3551239c93e924/constraintlayout-2.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.constraintlayout/constraintlayout/2.1.0/53df642f9d86b4432aad51ed61b5c5ea05c8afa2/constraintlayout-2.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_coordinatorlayout_coordinatorlayout_1_1_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_coordinatorlayout_coordinatorlayout_1_1_0_aar.xml
new file mode 100644
index 00000000..ce613794
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_coordinatorlayout_coordinatorlayout_1_1_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.coordinatorlayout:coordinatorlayout:1.1.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.coordinatorlayout/coordinatorlayout/1.1.0/a15529ac349d76a872ae5ef42b84c320c456cd7f/coordinatorlayout-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_core_core_1_5_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_core_core_1_5_0_aar.xml
new file mode 100644
index 00000000..d7795435
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_core_core_1_5_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.core:core:1.5.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.core/core/1.5.0/b59df19e06f42e39b6d6ee97b2a1e42fd7c88204/core-1.5.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_cursoradapter_cursoradapter_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_cursoradapter_cursoradapter_1_0_0_aar.xml
new file mode 100644
index 00000000..bcf3d0c8
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_cursoradapter_cursoradapter_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.cursoradapter:cursoradapter:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9f5395c9e2c4a1a11a43e64f5d81258c/cursoradapter-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9f5395c9e2c4a1a11a43e64f5d81258c/cursoradapter-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9f5395c9e2c4a1a11a43e64f5d81258c/cursoradapter-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.cursoradapter/cursoradapter/1.0.0/1e323083b41c31fd4d45510dfce50614963c3c6c/cursoradapter-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_customview_customview_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_customview_customview_1_0_0_aar.xml
new file mode 100644
index 00000000..68376951
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_customview_customview_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.customview:customview:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3438716bbde0c4ae93b6b3ca42413f5c/customview-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3438716bbde0c4ae93b6b3ca42413f5c/customview-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3438716bbde0c4ae93b6b3ca42413f5c/customview-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.customview/customview/1.0.0/61f6a717d144dff3a6bda413d9abeeb2bca71581/customview-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_documentfile_documentfile_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_documentfile_documentfile_1_0_0_aar.xml
new file mode 100644
index 00000000..79035401
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_documentfile_documentfile_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.documentfile:documentfile:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/815bb9272ee789daabc21bc15b42e2c3/documentfile-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/815bb9272ee789daabc21bc15b42e2c3/documentfile-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/815bb9272ee789daabc21bc15b42e2c3/documentfile-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.documentfile/documentfile/1.0.0/a1bed5cf96db96bd06a2feade98fe55653811dc8/documentfile-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_drawerlayout_drawerlayout_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_drawerlayout_drawerlayout_1_0_0_aar.xml
new file mode 100644
index 00000000..8467f241
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_drawerlayout_drawerlayout_1_0_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.drawerlayout:drawerlayout:1.0.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.drawerlayout/drawerlayout/1.0.0/9ecd4ecb7da215ba4c5c3e00bf8d290dad6f2bc5/drawerlayout-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_dynamicanimation_dynamicanimation_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_dynamicanimation_dynamicanimation_1_0_0_aar.xml
new file mode 100644
index 00000000..b0d2ebc8
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_dynamicanimation_dynamicanimation_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.dynamicanimation:dynamicanimation:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a51e1b63de109d5a073479324f6b9a1c/dynamicanimation-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a51e1b63de109d5a073479324f6b9a1c/dynamicanimation-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a51e1b63de109d5a073479324f6b9a1c/dynamicanimation-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.dynamicanimation/dynamicanimation/1.0.0/5c050e29af5033ff5e2d58ccf657ae92fdfbda4a/dynamicanimation-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_fragment_fragment_1_3_6_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_fragment_fragment_1_3_6_aar.xml
new file mode 100644
index 00000000..cfe0da22
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_fragment_fragment_1_3_6_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.fragment:fragment:1.3.6@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.fragment/fragment/1.3.6/25ece06338d39da1fdc9d8488aa57b5014866918/fragment-1.3.6-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_interpolator_interpolator_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_interpolator_interpolator_1_0_0_aar.xml
new file mode 100644
index 00000000..1d3d6d4a
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_interpolator_interpolator_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.interpolator:interpolator:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a81ff3a6f4fe4cdba627ce49c2369465/interpolator-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a81ff3a6f4fe4cdba627ce49c2369465/interpolator-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a81ff3a6f4fe4cdba627ce49c2369465/interpolator-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.interpolator/interpolator/1.0.0/fefd5e3cbc479b6b4a9532d05688a1e659e8d3d2/interpolator-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_legacy_legacy_support_core_utils_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_legacy_legacy_support_core_utils_1_0_0_aar.xml
new file mode 100644
index 00000000..2f6eb99f
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_legacy_legacy_support_core_utils_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.legacy:legacy-support-core-utils:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1e3214591e5f847e6b5b2333c34f548f/legacy-support-core-utils-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1e3214591e5f847e6b5b2333c34f548f/legacy-support-core-utils-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1e3214591e5f847e6b5b2333c34f548f/legacy-support-core-utils-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.legacy/legacy-support-core-utils/1.0.0/46c37f178088153618cfb0afef08ec96c48f93cb/legacy-support-core-utils-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_common_2_3_1.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_common_2_3_1.xml
new file mode 100644
index 00000000..a1e19120
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_common_2_3_1.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-common:2.3.1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-common/2.3.1/fc466261d52f4433863642fb40d12441ae274a98/lifecycle-common-2.3.1.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-common/2.3.1/36a4f870521a07778cf045be0274793c6298ec6/lifecycle-common-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_2_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_2_0_0_aar.xml
new file mode 100644
index 00000000..8e3202c4
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_2_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-livedata:2.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e3a7d3b723deff8b2b903c0665652c62/lifecycle-livedata-2.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e3a7d3b723deff8b2b903c0665652c62/lifecycle-livedata-2.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e3a7d3b723deff8b2b903c0665652c62/lifecycle-livedata-2.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-livedata/2.0.0/740ce61935bd789380c01178bd8ce402402ebd2f/lifecycle-livedata-2.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_core_2_3_1_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_core_2_3_1_aar.xml
new file mode 100644
index 00000000..64c3e446
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_core_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-livedata-core:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/475447259d8237c8605745086fc55597/lifecycle-livedata-core-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/475447259d8237c8605745086fc55597/lifecycle-livedata-core-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/475447259d8237c8605745086fc55597/lifecycle-livedata-core-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-livedata-core/2.3.1/38ecd5651d87b6db994df01f93fc72d6e59b846a/lifecycle-livedata-core-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_runtime_2_3_1_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_runtime_2_3_1_aar.xml
new file mode 100644
index 00000000..57ed31f1
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_runtime_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-runtime:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5b22b0456eb746581b5b739357fde86e/lifecycle-runtime-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5b22b0456eb746581b5b739357fde86e/lifecycle-runtime-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5b22b0456eb746581b5b739357fde86e/lifecycle-runtime-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-runtime/2.3.1/ae7040cf314de81d20ac69f28f5ab6c9a2c0d1ab/lifecycle-runtime-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_2_3_1_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_2_3_1_aar.xml
new file mode 100644
index 00000000..89175985
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-viewmodel:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/2173da8f0e3b2f5d6ed51ddfa294cf15/lifecycle-viewmodel-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/2173da8f0e3b2f5d6ed51ddfa294cf15/lifecycle-viewmodel-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/2173da8f0e3b2f5d6ed51ddfa294cf15/lifecycle-viewmodel-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-viewmodel/2.3.1/55d6fa3541ca02167b0bd62a16fbdaec2a71622/lifecycle-viewmodel-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_savedstate_2_3_1_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_savedstate_2_3_1_aar.xml
new file mode 100644
index 00000000..2b8192f5
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_savedstate_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-viewmodel-savedstate:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d2ff709217adbaee68cbce4e138923f2/lifecycle-viewmodel-savedstate-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d2ff709217adbaee68cbce4e138923f2/lifecycle-viewmodel-savedstate-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d2ff709217adbaee68cbce4e138923f2/lifecycle-viewmodel-savedstate-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-viewmodel-savedstate/2.3.1/411f92301435123d502de27b6f3262c062f3bd7a/lifecycle-viewmodel-savedstate-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_loader_loader_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_loader_loader_1_0_0_aar.xml
new file mode 100644
index 00000000..906ad697
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_loader_loader_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.loader:loader:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/818f45328ee8f5b99bad88c27c6cc009/loader-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/818f45328ee8f5b99bad88c27c6cc009/loader-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/818f45328ee8f5b99bad88c27c6cc009/loader-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.loader/loader/1.0.0/b9ef587f3e46c7fe5b00264989764e43ff45cada/loader-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_localbroadcastmanager_localbroadcastmanager_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_localbroadcastmanager_localbroadcastmanager_1_0_0_aar.xml
new file mode 100644
index 00000000..5180a041
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_localbroadcastmanager_localbroadcastmanager_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.localbroadcastmanager:localbroadcastmanager:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b93e2b8a7319b8231fdc1936a598b860/localbroadcastmanager-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b93e2b8a7319b8231fdc1936a598b860/localbroadcastmanager-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b93e2b8a7319b8231fdc1936a598b860/localbroadcastmanager-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.localbroadcastmanager/localbroadcastmanager/1.0.0/3930e99159fd6b7f1d2e7d5fe9af0924ca1faf9/localbroadcastmanager-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_print_print_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_print_print_1_0_0_aar.xml
new file mode 100644
index 00000000..fa1aa068
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_print_print_1_0_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.print:print:1.0.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.print/print/1.0.0/71fc2d9acf7cce6b96230c5af263268b1664914a/print-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_recyclerview_recyclerview_1_1_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_recyclerview_recyclerview_1_1_0_aar.xml
new file mode 100644
index 00000000..bdd817e8
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_recyclerview_recyclerview_1_1_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.recyclerview:recyclerview:1.1.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.recyclerview/recyclerview/1.1.0/f2bdf79e1977939817f54a9d3e2f6bc52b63bdd0/recyclerview-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_savedstate_savedstate_1_1_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_savedstate_savedstate_1_1_0_aar.xml
new file mode 100644
index 00000000..9878a838
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_savedstate_savedstate_1_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.savedstate:savedstate:1.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b3cfbfb1b9d3c28903be03b381ffe5a1/savedstate-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b3cfbfb1b9d3c28903be03b381ffe5a1/savedstate-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b3cfbfb1b9d3c28903be03b381ffe5a1/savedstate-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.savedstate/savedstate/1.1.0/73464c2c55129727354a95ffa91dc9c2cf0c78b/savedstate-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_core_1_4_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_core_1_4_0_aar.xml
new file mode 100644
index 00000000..d68fc073
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_core_1_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test:core:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d391507829b11424361d4065fee5049c/core-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d391507829b11424361d4065fee5049c/core-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d391507829b11424361d4065fee5049c/core-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/core/1.4.0/96b4d161def059d92989a352500d05d215c33d5e/core-1.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/core/1.4.0/2ba6b5cb5392cc99bdc6fb1f188c95497358fb62/core-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_espresso_espresso_core_3_4_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_espresso_espresso_core_3_4_0_aar.xml
new file mode 100644
index 00000000..c9edeb37
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_espresso_espresso_core_3_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.espresso:espresso-core:3.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/29c676728f0270598991f2d3f9e0a108/espresso-core-3.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/29c676728f0270598991f2d3f9e0a108/espresso-core-3.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/29c676728f0270598991f2d3f9e0a108/espresso-core-3.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-core/3.4.0/527848e2722cd3ada150b991c0e620ec4f0a8b/espresso-core-3.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-core/3.4.0/8c2dc35c200b749281e0fbdc1262359e19a99cc3/espresso-core-3.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_espresso_espresso_idling_resource_3_4_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_espresso_espresso_idling_resource_3_4_0_aar.xml
new file mode 100644
index 00000000..37863515
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_espresso_espresso_idling_resource_3_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.espresso:espresso-idling-resource:3.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/97f635e023276073e65bb6220759b19e/espresso-idling-resource-3.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/97f635e023276073e65bb6220759b19e/espresso-idling-resource-3.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/97f635e023276073e65bb6220759b19e/espresso-idling-resource-3.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-idling-resource/3.4.0/69a300fcf8de2c433672d07a6c436a19dfb9b8f9/espresso-idling-resource-3.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-idling-resource/3.4.0/80fd2aa3695bf9e0383d53f2f39016960a0156a6/espresso-idling-resource-3.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_ext_junit_1_1_3_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_ext_junit_1_1_3_aar.xml
new file mode 100644
index 00000000..2de87d92
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_ext_junit_1_1_3_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.ext:junit:1.1.3@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1d0a8c40270d0f872a223d8d4fcef6a7/junit-1.1.3/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1d0a8c40270d0f872a223d8d4fcef6a7/junit-1.1.3/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1d0a8c40270d0f872a223d8d4fcef6a7/junit-1.1.3/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.ext/junit/1.1.3/f138cf897cc1e024dd714073df04f2425d845104/junit-1.1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.ext/junit/1.1.3/cdf059d469527681d62d3330131eb875b77911d5/junit-1.1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_monitor_1_4_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_monitor_1_4_0_aar.xml
new file mode 100644
index 00000000..56b2b14c
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_monitor_1_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test:monitor:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/4dd63116c82307e666318756b46c6f8f/monitor-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/4dd63116c82307e666318756b46c6f8f/monitor-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/4dd63116c82307e666318756b46c6f8f/monitor-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/monitor/1.4.0/2770e38fa6d39242c2fa2e9d2ca3275b1d9debd8/monitor-1.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/monitor/1.4.0/5d892d39aae695079e3ecc7a841336ff3aeaf40/monitor-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_runner_1_4_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_runner_1_4_0_aar.xml
new file mode 100644
index 00000000..49fdf446
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_runner_1_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test:runner:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8432b5c7b397613f563c0e4f808b7a60/runner-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8432b5c7b397613f563c0e4f808b7a60/runner-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8432b5c7b397613f563c0e4f808b7a60/runner-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/runner/1.4.0/aee6a62a26d9b413dadc1732e66cc4ef3bcf9d61/runner-1.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/runner/1.4.0/11ef580a9f2ea2fba4d060a3121506197bd6b183/runner-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_services_storage_1_4_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_services_storage_1_4_0_aar.xml
new file mode 100644
index 00000000..b3d37127
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_test_services_storage_1_4_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.services:storage:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cab7427031340e655b498850dc34743e/storage-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cab7427031340e655b498850dc34743e/storage-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cab7427031340e655b498850dc34743e/storage-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.services/storage/1.4.0/27088f46bc0ab94523a20ccc56aa27e142662396/storage-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_transition_transition_1_2_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_transition_transition_1_2_0_aar.xml
new file mode 100644
index 00000000..b8df611c
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_transition_transition_1_2_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.transition:transition:1.2.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.transition/transition/1.2.0/65d2a5dab39f120d3f584fdead252ce81ec7dbee/transition-1.2.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_1_1_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_1_1_0_aar.xml
new file mode 100644
index 00000000..80d26425
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_1_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.vectordrawable:vectordrawable:1.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d9a1f9c79beb812a29c08dec8e929987/vectordrawable-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d9a1f9c79beb812a29c08dec8e929987/vectordrawable-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d9a1f9c79beb812a29c08dec8e929987/vectordrawable-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.vectordrawable/vectordrawable/1.1.0/1e0694477eed874c50c54b547cc3e5a62a57a62b/vectordrawable-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_animated_1_1_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_animated_1_1_0_aar.xml
new file mode 100644
index 00000000..9ae57f62
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_animated_1_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.vectordrawable:vectordrawable-animated:1.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8265d5cb033aea9b3b2b59393038f53/vectordrawable-animated-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8265d5cb033aea9b3b2b59393038f53/vectordrawable-animated-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8265d5cb033aea9b3b2b59393038f53/vectordrawable-animated-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.vectordrawable/vectordrawable-animated/1.1.0/871a7705cd03bc246947638c712cdd11378233ff/vectordrawable-animated-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_versionedparcelable_versionedparcelable_1_1_1_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_versionedparcelable_versionedparcelable_1_1_1_aar.xml
new file mode 100644
index 00000000..df200125
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_versionedparcelable_versionedparcelable_1_1_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.versionedparcelable:versionedparcelable:1.1.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9c1a19876166723a3f4a522f5e580c9e/versionedparcelable-1.1.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9c1a19876166723a3f4a522f5e580c9e/versionedparcelable-1.1.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9c1a19876166723a3f4a522f5e580c9e/versionedparcelable-1.1.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.versionedparcelable/versionedparcelable/1.1.1/d9085927216387af679d18b6f472bc0fc5c7cc81/versionedparcelable-1.1.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_viewpager2_viewpager2_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_viewpager2_viewpager2_1_0_0_aar.xml
new file mode 100644
index 00000000..d4ae1779
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_viewpager2_viewpager2_1_0_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.viewpager2:viewpager2:1.0.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.viewpager2/viewpager2/1.0.0/3c3569044e6969f1ee5c3aa03b08e6717a2d782f/viewpager2-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_viewpager_viewpager_1_0_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_viewpager_viewpager_1_0_0_aar.xml
new file mode 100644
index 00000000..65ed8399
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__androidx_viewpager_viewpager_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.viewpager:viewpager:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b9a8ccdf08677e6ebe8a29448e9bae04/viewpager-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b9a8ccdf08677e6ebe8a29448e9bae04/viewpager-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b9a8ccdf08677e6ebe8a29448e9bae04/viewpager-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.viewpager/viewpager/1.0.0/db045f92188b9d247d5f556866f8861ab68528f0/viewpager-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__com_google_android_material_material_1_4_0_aar.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__com_google_android_material_material_1_4_0_aar.xml
new file mode 100644
index 00000000..e7f0e822
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__com_google_android_material_material_1_4_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: com.google.android.material:material:1.4.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.google.android.material/material/1.4.0/51035a8f6342c20d4d8f242d100e6f25e0c271ac/material-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__com_google_code_findbugs_jsr305_2_0_1.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__com_google_code_findbugs_jsr305_2_0_1.xml
new file mode 100644
index 00000000..2b834ea2
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__com_google_code_findbugs_jsr305_2_0_1.xml
@@ -0,0 +1,9 @@
+<component name="libraryTable">
+  <library name="Gradle: com.google.code.findbugs:jsr305:2.0.1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.google.code.findbugs/jsr305/2.0.1/516c03b21d50a644d538de0f0369c620989cd8f0/jsr305-2.0.1.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__com_squareup_javawriter_2_1_1.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__com_squareup_javawriter_2_1_1.xml
new file mode 100644
index 00000000..662b001e
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__com_squareup_javawriter_2_1_1.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: com.squareup:javawriter:2.1.1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.squareup/javawriter/2.1.1/67ff45d9ae02e583d0f9b3432a5ebbe05c30c966/javawriter-2.1.1.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.squareup/javawriter/2.1.1/f591a105db78771d0a1e7a277b3747556c528c22/javawriter-2.1.1-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.squareup/javawriter/2.1.1/5b31387d839a5cdaf5b6de3990da01f7f2b963c5/javawriter-2.1.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__javax_inject_javax_inject_1.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__javax_inject_javax_inject_1.xml
new file mode 100644
index 00000000..62012eaf
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__javax_inject_javax_inject_1.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: javax.inject:javax.inject:1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/javax.inject/javax.inject/1/6975da39a7040257bd51d21a231b76c915872d38/javax.inject-1.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/javax.inject/javax.inject/1/70ec961c25111ed9015d1af77772d96383c2d238/javax.inject-1-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/javax.inject/javax.inject/1/a00123f261762a7c5e0ec916a2c7c8298d29c400/javax.inject-1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__junit_junit_4_12.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__junit_junit_4_12.xml
new file mode 100644
index 00000000..6c078d62
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__junit_junit_4_12.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: junit:junit:4.12">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/2973d150c0dc1fefe998f834810d68f278ea58ec/junit-4.12.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/941a8be4506c65f0a9001c08812fb7da1e505e21/junit-4.12-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/a6c32b40bf3d76eca54e3c601e5d1470c86fcdfa/junit-4.12-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__junit_junit_4_13_2.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__junit_junit_4_13_2.xml
new file mode 100644
index 00000000..c2cb45da
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__junit_junit_4_13_2.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: junit:junit:4.13.2">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.13.2/8ac9e16d933b6fb43bc7f576336b8f4d7eb5ba12/junit-4.13.2.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.13.2/f2f3f384dacd2ade2ddf7aa7e0f4360dfee38672/junit-4.13.2-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.13.2/33987872a811fe4d4001ed494b07854822257f42/junit-4.13.2-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3.xml
new file mode 100644
index 00000000..09cf23d1
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: org.hamcrest:hamcrest-core:1.3">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/42a25dc3219429f0e5d060061f71acb49bf010a0/hamcrest-core-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/ad09811315f1d4f5756986575b0ea16b99cd686f/hamcrest-core-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/1dc37250fbc78e23a65a67fbbaf71d2e9cbc3c0b/hamcrest-core-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__org_hamcrest_hamcrest_integration_1_3.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__org_hamcrest_hamcrest_integration_1_3.xml
new file mode 100644
index 00000000..1a77dd83
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__org_hamcrest_hamcrest_integration_1_3.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: org.hamcrest:hamcrest-integration:1.3">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-integration/1.3/5de0c73fef18917cd85d0ab70bb23818685e4dfd/hamcrest-integration-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-integration/1.3/cc5884d4138d3376f574f6a3992acceedfc37bea/hamcrest-integration-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-integration/1.3/ae7787a563e6a1b1f17fd4ac43be3a3c8830cfda/hamcrest-integration-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/libraries/Gradle__org_hamcrest_hamcrest_library_1_3.xml b/second/09_thread/SampleLooper/.idea/libraries/Gradle__org_hamcrest_hamcrest_library_1_3.xml
new file mode 100644
index 00000000..3d45e8e9
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/libraries/Gradle__org_hamcrest_hamcrest_library_1_3.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: org.hamcrest:hamcrest-library:1.3">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/4785a3c21320980282f9f33d0d1264a69040538f/hamcrest-library-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/4324046c5f99f3dc91b5370899fa3ae65fd137d2/hamcrest-library-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/47a7ee46628ab7133129cd7cef1e92657bc275e/hamcrest-library-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/modules.xml b/second/09_thread/SampleLooper/.idea/modules.xml
new file mode 100644
index 00000000..4348ccc0
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/modules.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/modules/SampleLooper.iml" filepath="$PROJECT_DIR$/.idea/modules/SampleLooper.iml" />
+      <module fileurl="file://$PROJECT_DIR$/.idea/modules/app/SampleLooper.app.iml" filepath="$PROJECT_DIR$/.idea/modules/app/SampleLooper.app.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/modules/SampleLooper.iml b/second/09_thread/SampleLooper/.idea/modules/SampleLooper.iml
new file mode 100644
index 00000000..c22bda2c
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/modules/SampleLooper.iml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id="SampleLooper" external.linked.project.path="$MODULE_DIR$/../.." external.root.project.path="$MODULE_DIR$/../.." external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="java-gradle" name="Java-Gradle">
+      <configuration>
+        <option name="BUILD_FOLDER_PATH" value="$MODULE_DIR$/../../build" />
+        <option name="BUILDABLE" value="false" />
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/../..">
+      <excludeFolder url="file://$MODULE_DIR$/../../.gradle" />
+      <excludeFolder url="file://$MODULE_DIR$/../../build" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/modules/app/SampleLooper.app.iml b/second/09_thread/SampleLooper/.idea/modules/app/SampleLooper.app.iml
new file mode 100644
index 00000000..5e303703
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/modules/app/SampleLooper.app.iml
@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id=":app" external.linked.project.path="$MODULE_DIR$/../../../app" external.root.project.path="$MODULE_DIR$/../../.." external.system.id="GRADLE" external.system.module.group="SampleLooper" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="android-gradle" name="Android-Gradle">
+      <configuration>
+        <option name="GRADLE_PROJECT_PATH" value=":app" />
+        <option name="LAST_SUCCESSFUL_SYNC_AGP_VERSION" value="4.2.2" />
+        <option name="LAST_KNOWN_AGP_VERSION" value="4.2.2" />
+      </configuration>
+    </facet>
+    <facet type="android" name="Android">
+      <configuration>
+        <option name="SELECTED_BUILD_VARIANT" value="debug" />
+        <option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
+        <option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
+        <afterSyncTasks>
+          <task>generateDebugSources</task>
+        </afterSyncTasks>
+        <option name="ALLOW_USER_CONFIGURATION" value="false" />
+        <option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
+        <option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
+        <option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/../../../app/src/main/res;file://$MODULE_DIR$/../../../app/src/debug/res;file://$MODULE_DIR$/../../../app/build/generated/res/rs/debug;file://$MODULE_DIR$/../../../app/build/generated/res/resValues/debug" />
+        <option name="TEST_RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/../../../app/src/androidTest/res;file://$MODULE_DIR$/../../../app/src/androidTestDebug/res;file://$MODULE_DIR$/../../../app/build/generated/res/rs/androidTest/debug;file://$MODULE_DIR$/../../../app/build/generated/res/resValues/androidTest/debug" />
+        <option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output url="file://$MODULE_DIR$/../../../app/build/intermediates/javac/debug/classes" />
+    <output-test url="file://$MODULE_DIR$/../../../app/build/intermediates/javac/debugUnitTest/classes" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/../../../app">
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/androidTest/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/test/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/main/res" type="java-resource" />
+      <excludeFolder url="file://$MODULE_DIR$/../../../app/.gradle" />
+      <excludeFolder url="file://$MODULE_DIR$/../../../app/build" />
+    </content>
+    <orderEntry type="jdk" jdkName="Android API 30 Platform" jdkType="Android SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="TEST" name="Gradle: junit:junit:4.13.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: org.hamcrest:hamcrest-core:1.3" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: junit:junit:4.12" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: org.hamcrest:hamcrest-integration:1.3" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: org.hamcrest:hamcrest-library:1.3" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: com.google.code.findbugs:jsr305:2.0.1" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: com.squareup:javawriter:2.1.1" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: javax.inject:javax.inject:1" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test.ext:junit:1.1.3@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test.espresso:espresso-core:3.4.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test:runner:1.4.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test:core:1.4.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test.services:storage:1.4.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test:monitor:1.4.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.arch.core:core-runtime:2.0.0@aar" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: androidx.test.espresso:espresso-idling-resource:3.4.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.collection:collection:1.1.0" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-common:2.3.1" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.arch.core:core-common:2.1.0" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.annotation:annotation:1.2.0" level="project" />
+    <orderEntry type="library" name="Gradle: com.google.android.material:material:1.4.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.appcompat:appcompat:1.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.viewpager2:viewpager2:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.fragment:fragment:1.3.6@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.activity:activity:1.2.4@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.appcompat:appcompat-resources:1.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.drawerlayout:drawerlayout:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.coordinatorlayout:coordinatorlayout:1.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.dynamicanimation:dynamicanimation:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.recyclerview:recyclerview:1.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.transition:transition:1.2.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.vectordrawable:vectordrawable-animated:1.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.vectordrawable:vectordrawable:1.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.viewpager:viewpager:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.legacy:legacy-support-core-utils:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.loader:loader:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.customview:customview:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.core:core:1.5.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.cursoradapter:cursoradapter:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-viewmodel-savedstate:2.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.savedstate:savedstate:1.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.cardview:cardview:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-runtime:2.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.versionedparcelable:versionedparcelable:1.1.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-viewmodel:2.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-livedata:2.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.lifecycle:lifecycle-livedata-core:2.3.1@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.arch.core:core-runtime:2.1.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.interpolator:interpolator:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.documentfile:documentfile:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.localbroadcastmanager:localbroadcastmanager:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.print:print:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.annotation:annotation-experimental:1.0.0@aar" level="project" />
+    <orderEntry type="library" name="Gradle: androidx.constraintlayout:constraintlayout:2.1.0@aar" level="project" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/.idea/workspace.xml b/second/09_thread/SampleLooper/.idea/workspace.xml
new file mode 100644
index 00000000..1f74bac6
--- /dev/null
+++ b/second/09_thread/SampleLooper/.idea/workspace.xml
@@ -0,0 +1,156 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AndroidLayouts">
+    <shared>
+      <config />
+    </shared>
+  </component>
+  <component name="AutoImportSettings">
+    <option name="autoReloadType" value="NONE" />
+  </component>
+  <component name="BranchesTreeState">
+    <expand>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="LOCAL_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="LOCAL_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:second" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:origin" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:origin" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:second" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+    </expand>
+    <select />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="f384f35e-d925-456a-b60c-7ed73576d9fc" name="Default Changelist" comment="" />
+    <option name="SHOW_DIALOG" value="false" />
+    <option name="HIGHLIGHT_CONFLICTS" value="true" />
+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="ExecutionTargetManager" SELECTED_TARGET="device_and_snapshot_combo_box_target[VirtualDevicePath@/Users/jjuyaa/.android/avd/Pixel_3a_API_30_x86.avd]" />
+  <component name="ExternalProjectsData">
+    <projectState path="$PROJECT_DIR$">
+      <ProjectState />
+    </projectState>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$/../../.." />
+  </component>
+  <component name="ProjectId" id="1wvI2Kt9nr2qRbDcWf9MjgfXGeL" />
+  <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent">
+    <property name="RunOnceActivity.OpenProjectViewOnStart" value="true" />
+    <property name="memory.settings.postsync.last.time.stamp" value="1629332448335" />
+    <property name="settings.editor.selected.configurable" value="AndroidSdkUpdater" />
+  </component>
+  <component name="RunManager">
+    <configuration default="true" type="AndroidJUnit" factoryName="Android JUnit">
+      <option name="TEST_OBJECT" value="class" />
+      <option name="WORKING_DIRECTORY" value="$MODULE_DIR$" />
+      <method v="2">
+        <option name="Android.Gradle.BeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="app" type="AndroidRunConfigurationType" factoryName="Android App">
+      <module name="SampleLooper.app" />
+      <option name="DEPLOY" value="true" />
+      <option name="DEPLOY_APK_FROM_BUNDLE" value="false" />
+      <option name="DEPLOY_AS_INSTANT" value="false" />
+      <option name="ARTIFACT_NAME" value="" />
+      <option name="PM_INSTALL_OPTIONS" value="" />
+      <option name="ALL_USERS" value="false" />
+      <option name="ALWAYS_INSTALL_WITH_PM" value="false" />
+      <option name="DYNAMIC_FEATURES_DISABLED_LIST" value="" />
+      <option name="ACTIVITY_EXTRA_FLAGS" value="" />
+      <option name="MODE" value="default_activity" />
+      <option name="CLEAR_LOGCAT" value="false" />
+      <option name="SHOW_LOGCAT_AUTOMATICALLY" value="false" />
+      <option name="SKIP_NOOP_APK_INSTALLATIONS" value="true" />
+      <option name="FORCE_STOP_RUNNING_APP" value="true" />
+      <option name="TARGET_SELECTION_MODE" value="DEVICE_AND_SNAPSHOT_COMBO_BOX" />
+      <option name="SELECTED_CLOUD_MATRIX_CONFIGURATION_ID" value="-1" />
+      <option name="SELECTED_CLOUD_MATRIX_PROJECT_ID" value="" />
+      <option name="DEBUGGER_TYPE" value="Auto" />
+      <Auto>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Auto>
+      <Hybrid>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Hybrid>
+      <Java />
+      <Native>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Native>
+      <Profilers>
+        <option name="ADVANCED_PROFILING_ENABLED" value="false" />
+        <option name="STARTUP_PROFILING_ENABLED" value="false" />
+        <option name="STARTUP_CPU_PROFILING_ENABLED" value="false" />
+        <option name="STARTUP_CPU_PROFILING_CONFIGURATION_NAME" value="Sample Java Methods" />
+        <option name="STARTUP_NATIVE_MEMORY_PROFILING_ENABLED" value="false" />
+        <option name="NATIVE_MEMORY_SAMPLE_RATE_BYTES" value="2048" />
+      </Profilers>
+      <option name="DEEP_LINK" value="" />
+      <option name="ACTIVITY_CLASS" value="" />
+      <option name="SEARCH_ACTIVITY_IN_GLOBAL_SCOPE" value="false" />
+      <option name="SKIP_ACTIVITY_VALIDATION" value="false" />
+      <method v="2">
+        <option name="Android.Gradle.BeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+  </component>
+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
+  <component name="TaskManager">
+    <task active="true" id="Default" summary="Default task">
+      <changelist id="f384f35e-d925-456a-b60c-7ed73576d9fc" name="Default Changelist" comment="" />
+      <created>1629332430780</created>
+      <option name="number" value="Default" />
+      <option name="presentableId" value="Default" />
+      <updated>1629332430780</updated>
+    </task>
+    <servers />
+  </component>
+  <component name="Vcs.Log.Tabs.Properties">
+    <option name="TAB_STATES">
+      <map>
+        <entry key="MAIN">
+          <value>
+            <State />
+          </value>
+        </entry>
+      </map>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/09_thread/SampleLooper/local.properties b/second/09_thread/SampleLooper/local.properties
new file mode 100644
index 00000000..0c001059
--- /dev/null
+++ b/second/09_thread/SampleLooper/local.properties
@@ -0,0 +1,10 @@
+## This file is automatically generated by Android Studio.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file should *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+#
+# Location of the SDK. This is only used by Gradle.
+# For customization when using a Version Control System, please read the
+# header note.
+sdk.dir=/Users/jjuyaa/Library/Android/sdk
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.gradle/6.7.1/fileChanges/last-build.bin b/second/09_thread/SampleThreadAnimation/.gradle/6.7.1/fileChanges/last-build.bin
new file mode 100644
index 00000000..f76dd238
Binary files /dev/null and b/second/09_thread/SampleThreadAnimation/.gradle/6.7.1/fileChanges/last-build.bin differ
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new file mode 100644
index 00000000..78eabf0f
Binary files /dev/null and b/second/09_thread/SampleThreadAnimation/.gradle/6.7.1/fileHashes/fileHashes.bin differ
diff --git a/second/09_thread/SampleThreadAnimation/.gradle/6.7.1/fileHashes/fileHashes.lock b/second/09_thread/SampleThreadAnimation/.gradle/6.7.1/fileHashes/fileHashes.lock
new file mode 100644
index 00000000..c7139c13
Binary files /dev/null and b/second/09_thread/SampleThreadAnimation/.gradle/6.7.1/fileHashes/fileHashes.lock differ
diff --git a/second/09_thread/SampleThreadAnimation/.gradle/6.7.1/gc.properties b/second/09_thread/SampleThreadAnimation/.gradle/6.7.1/gc.properties
new file mode 100644
index 00000000..e69de29b
diff --git a/second/09_thread/SampleThreadAnimation/.gradle/buildOutputCleanup/buildOutputCleanup.lock b/second/09_thread/SampleThreadAnimation/.gradle/buildOutputCleanup/buildOutputCleanup.lock
new file mode 100644
index 00000000..cccc6ca7
Binary files /dev/null and b/second/09_thread/SampleThreadAnimation/.gradle/buildOutputCleanup/buildOutputCleanup.lock differ
diff --git a/second/09_thread/SampleThreadAnimation/.gradle/buildOutputCleanup/cache.properties b/second/09_thread/SampleThreadAnimation/.gradle/buildOutputCleanup/cache.properties
new file mode 100644
index 00000000..8a1e2068
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.gradle/buildOutputCleanup/cache.properties
@@ -0,0 +1,2 @@
+#Thu Aug 19 09:46:53 KST 2021
+gradle.version=6.7.1
diff --git a/second/09_thread/SampleThreadAnimation/.gradle/checksums/checksums.lock b/second/09_thread/SampleThreadAnimation/.gradle/checksums/checksums.lock
new file mode 100644
index 00000000..07f8b3d5
Binary files /dev/null and b/second/09_thread/SampleThreadAnimation/.gradle/checksums/checksums.lock differ
diff --git a/second/09_thread/SampleThreadAnimation/.gradle/configuration-cache/gc.properties b/second/09_thread/SampleThreadAnimation/.gradle/configuration-cache/gc.properties
new file mode 100644
index 00000000..e69de29b
diff --git a/second/09_thread/SampleThreadAnimation/.gradle/vcs-1/gc.properties b/second/09_thread/SampleThreadAnimation/.gradle/vcs-1/gc.properties
new file mode 100644
index 00000000..e69de29b
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_activity_activity_1_2_4_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_activity_activity_1_2_4_aar.xml
new file mode 100644
index 00000000..f29bccc1
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_activity_activity_1_2_4_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.activity:activity:1.2.4@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b2b784d5451cbf3652154bd11b42fa8/activity-1.2.4/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.activity/activity/1.2.4/2572345ff3e71e4e97140b01423cb80765b5b3e5/activity-1.2.4-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_annotation_annotation_1_2_0.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_annotation_annotation_1_2_0.xml
new file mode 100644
index 00000000..74437d76
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_annotation_annotation_1_2_0.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.annotation:annotation:1.2.0">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.annotation/annotation/1.2.0/57136ff68ee784c6e19db34ed4a175338fadfde1/annotation-1.2.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.annotation/annotation/1.2.0/8945212022e5276658ab7864714ced3553ea724a/annotation-1.2.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_annotation_annotation_experimental_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_annotation_annotation_experimental_1_0_0_aar.xml
new file mode 100644
index 00000000..e5e82678
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_annotation_annotation_experimental_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.annotation:annotation-experimental:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b1826e082b884f9fc593d27a9580a45/annotation-experimental-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b1826e082b884f9fc593d27a9580a45/annotation-experimental-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8b1826e082b884f9fc593d27a9580a45/annotation-experimental-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.annotation/annotation-experimental/1.0.0/2408f6cb8f31ffabdd88e1365f82914c251e44dc/annotation-experimental-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_appcompat_appcompat_1_3_1_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_appcompat_appcompat_1_3_1_aar.xml
new file mode 100644
index 00000000..7e822059
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_appcompat_appcompat_1_3_1_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.appcompat:appcompat:1.3.1@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/c3edb913602f1c359d264c4687287f78/appcompat-1.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.appcompat/appcompat/1.3.1/45a346a05e7ff27a01c59452379c5939cbb53c03/appcompat-1.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_appcompat_appcompat_resources_1_3_1_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_appcompat_appcompat_resources_1_3_1_aar.xml
new file mode 100644
index 00000000..cec8145b
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_appcompat_appcompat_resources_1_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.appcompat:appcompat-resources:1.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3f654904cfc98f4abc850208420106d3/appcompat-resources-1.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3f654904cfc98f4abc850208420106d3/appcompat-resources-1.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3f654904cfc98f4abc850208420106d3/appcompat-resources-1.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.appcompat/appcompat-resources/1.3.1/fa1169a9b404f7e905756330af6d13e27dcee50e/appcompat-resources-1.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_arch_core_core_common_2_1_0.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_arch_core_core_common_2_1_0.xml
new file mode 100644
index 00000000..22084152
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_arch_core_core_common_2_1_0.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.arch.core:core-common:2.1.0">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-common/2.1.0/b3152fc64428c9354344bd89848ecddc09b6f07e/core-common-2.1.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-common/2.1.0/80ac2d7c8e6400ce2fbc663cd1a7e1cbef38c4b8/core-common-2.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_0_0_aar.xml
new file mode 100644
index 00000000..edc58e23
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.arch.core:core-runtime:2.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/750b7b3e6ba5087b346f6e90470bbb4c/core-runtime-2.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/750b7b3e6ba5087b346f6e90470bbb4c/core-runtime-2.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/750b7b3e6ba5087b346f6e90470bbb4c/core-runtime-2.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-runtime/2.0.0/bc41b287c95bc50a3cd27cb1b7cfb301805ba7f1/core-runtime-2.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_1_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_1_0_aar.xml
new file mode 100644
index 00000000..85cce128
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_arch_core_core_runtime_2_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.arch.core:core-runtime:2.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/69846ae0a25a5c26a4168a449d371740/core-runtime-2.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/69846ae0a25a5c26a4168a449d371740/core-runtime-2.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/69846ae0a25a5c26a4168a449d371740/core-runtime-2.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.arch.core/core-runtime/2.1.0/f19886651c9946b39f83d8c184fd0e2ce9f43c16/core-runtime-2.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_cardview_cardview_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_cardview_cardview_1_0_0_aar.xml
new file mode 100644
index 00000000..309cc739
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_cardview_cardview_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.cardview:cardview:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/204d56b624e751e7990ccfa8a11e8889/cardview-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/204d56b624e751e7990ccfa8a11e8889/cardview-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/204d56b624e751e7990ccfa8a11e8889/cardview-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.cardview/cardview/1.0.0/c9f3ce7ca74ad2c978230f4094ba6804c5166f9c/cardview-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_collection_collection_1_1_0.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_collection_collection_1_1_0.xml
new file mode 100644
index 00000000..eafc05e9
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_collection_collection_1_1_0.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.collection:collection:1.1.0">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.collection/collection/1.1.0/1f27220b47669781457de0d600849a5de0e89909/collection-1.1.0.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.collection/collection/1.1.0/bae67b0019fbb38498198fcc2d0282a340b71c5b/collection-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_constraintlayout_constraintlayout_2_1_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_constraintlayout_constraintlayout_2_1_0_aar.xml
new file mode 100644
index 00000000..d156bd81
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_constraintlayout_constraintlayout_2_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.constraintlayout:constraintlayout:2.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e0f2c8bfb3f4e90e7e3551239c93e924/constraintlayout-2.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e0f2c8bfb3f4e90e7e3551239c93e924/constraintlayout-2.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e0f2c8bfb3f4e90e7e3551239c93e924/constraintlayout-2.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.constraintlayout/constraintlayout/2.1.0/53df642f9d86b4432aad51ed61b5c5ea05c8afa2/constraintlayout-2.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_coordinatorlayout_coordinatorlayout_1_1_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_coordinatorlayout_coordinatorlayout_1_1_0_aar.xml
new file mode 100644
index 00000000..ce613794
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_coordinatorlayout_coordinatorlayout_1_1_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.coordinatorlayout:coordinatorlayout:1.1.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/0b72cca5aef8e2f071ebd052cd8ee1aa/coordinatorlayout-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.coordinatorlayout/coordinatorlayout/1.1.0/a15529ac349d76a872ae5ef42b84c320c456cd7f/coordinatorlayout-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_core_core_1_5_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_core_core_1_5_0_aar.xml
new file mode 100644
index 00000000..d7795435
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_core_core_1_5_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.core:core:1.5.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cc5e9dcdc56dc39042f72c501235e83f/core-1.5.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.core/core/1.5.0/b59df19e06f42e39b6d6ee97b2a1e42fd7c88204/core-1.5.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_cursoradapter_cursoradapter_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_cursoradapter_cursoradapter_1_0_0_aar.xml
new file mode 100644
index 00000000..bcf3d0c8
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_cursoradapter_cursoradapter_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.cursoradapter:cursoradapter:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9f5395c9e2c4a1a11a43e64f5d81258c/cursoradapter-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9f5395c9e2c4a1a11a43e64f5d81258c/cursoradapter-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9f5395c9e2c4a1a11a43e64f5d81258c/cursoradapter-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.cursoradapter/cursoradapter/1.0.0/1e323083b41c31fd4d45510dfce50614963c3c6c/cursoradapter-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_customview_customview_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_customview_customview_1_0_0_aar.xml
new file mode 100644
index 00000000..68376951
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_customview_customview_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.customview:customview:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3438716bbde0c4ae93b6b3ca42413f5c/customview-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3438716bbde0c4ae93b6b3ca42413f5c/customview-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/3438716bbde0c4ae93b6b3ca42413f5c/customview-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.customview/customview/1.0.0/61f6a717d144dff3a6bda413d9abeeb2bca71581/customview-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_documentfile_documentfile_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_documentfile_documentfile_1_0_0_aar.xml
new file mode 100644
index 00000000..79035401
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_documentfile_documentfile_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.documentfile:documentfile:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/815bb9272ee789daabc21bc15b42e2c3/documentfile-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/815bb9272ee789daabc21bc15b42e2c3/documentfile-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/815bb9272ee789daabc21bc15b42e2c3/documentfile-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.documentfile/documentfile/1.0.0/a1bed5cf96db96bd06a2feade98fe55653811dc8/documentfile-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_drawerlayout_drawerlayout_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_drawerlayout_drawerlayout_1_0_0_aar.xml
new file mode 100644
index 00000000..8467f241
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_drawerlayout_drawerlayout_1_0_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.drawerlayout:drawerlayout:1.0.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9bcad8df747e7e541c668492e993a22d/drawerlayout-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.drawerlayout/drawerlayout/1.0.0/9ecd4ecb7da215ba4c5c3e00bf8d290dad6f2bc5/drawerlayout-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_dynamicanimation_dynamicanimation_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_dynamicanimation_dynamicanimation_1_0_0_aar.xml
new file mode 100644
index 00000000..b0d2ebc8
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_dynamicanimation_dynamicanimation_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.dynamicanimation:dynamicanimation:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a51e1b63de109d5a073479324f6b9a1c/dynamicanimation-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a51e1b63de109d5a073479324f6b9a1c/dynamicanimation-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a51e1b63de109d5a073479324f6b9a1c/dynamicanimation-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.dynamicanimation/dynamicanimation/1.0.0/5c050e29af5033ff5e2d58ccf657ae92fdfbda4a/dynamicanimation-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_fragment_fragment_1_3_6_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_fragment_fragment_1_3_6_aar.xml
new file mode 100644
index 00000000..cfe0da22
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_fragment_fragment_1_3_6_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.fragment:fragment:1.3.6@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/380cac61cb2889001fece44433f66572/fragment-1.3.6/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.fragment/fragment/1.3.6/25ece06338d39da1fdc9d8488aa57b5014866918/fragment-1.3.6-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_interpolator_interpolator_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_interpolator_interpolator_1_0_0_aar.xml
new file mode 100644
index 00000000..1d3d6d4a
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_interpolator_interpolator_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.interpolator:interpolator:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a81ff3a6f4fe4cdba627ce49c2369465/interpolator-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a81ff3a6f4fe4cdba627ce49c2369465/interpolator-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/a81ff3a6f4fe4cdba627ce49c2369465/interpolator-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.interpolator/interpolator/1.0.0/fefd5e3cbc479b6b4a9532d05688a1e659e8d3d2/interpolator-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_legacy_legacy_support_core_utils_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_legacy_legacy_support_core_utils_1_0_0_aar.xml
new file mode 100644
index 00000000..2f6eb99f
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_legacy_legacy_support_core_utils_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.legacy:legacy-support-core-utils:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1e3214591e5f847e6b5b2333c34f548f/legacy-support-core-utils-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1e3214591e5f847e6b5b2333c34f548f/legacy-support-core-utils-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1e3214591e5f847e6b5b2333c34f548f/legacy-support-core-utils-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.legacy/legacy-support-core-utils/1.0.0/46c37f178088153618cfb0afef08ec96c48f93cb/legacy-support-core-utils-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_common_2_3_1.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_common_2_3_1.xml
new file mode 100644
index 00000000..a1e19120
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_common_2_3_1.xml
@@ -0,0 +1,11 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-common:2.3.1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-common/2.3.1/fc466261d52f4433863642fb40d12441ae274a98/lifecycle-common-2.3.1.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-common/2.3.1/36a4f870521a07778cf045be0274793c6298ec6/lifecycle-common-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_2_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_2_0_0_aar.xml
new file mode 100644
index 00000000..8e3202c4
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_2_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-livedata:2.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e3a7d3b723deff8b2b903c0665652c62/lifecycle-livedata-2.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e3a7d3b723deff8b2b903c0665652c62/lifecycle-livedata-2.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/e3a7d3b723deff8b2b903c0665652c62/lifecycle-livedata-2.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-livedata/2.0.0/740ce61935bd789380c01178bd8ce402402ebd2f/lifecycle-livedata-2.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_core_2_3_1_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_core_2_3_1_aar.xml
new file mode 100644
index 00000000..64c3e446
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_livedata_core_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-livedata-core:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/475447259d8237c8605745086fc55597/lifecycle-livedata-core-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/475447259d8237c8605745086fc55597/lifecycle-livedata-core-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/475447259d8237c8605745086fc55597/lifecycle-livedata-core-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-livedata-core/2.3.1/38ecd5651d87b6db994df01f93fc72d6e59b846a/lifecycle-livedata-core-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_runtime_2_3_1_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_runtime_2_3_1_aar.xml
new file mode 100644
index 00000000..57ed31f1
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_runtime_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-runtime:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5b22b0456eb746581b5b739357fde86e/lifecycle-runtime-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5b22b0456eb746581b5b739357fde86e/lifecycle-runtime-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5b22b0456eb746581b5b739357fde86e/lifecycle-runtime-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-runtime/2.3.1/ae7040cf314de81d20ac69f28f5ab6c9a2c0d1ab/lifecycle-runtime-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_2_3_1_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_2_3_1_aar.xml
new file mode 100644
index 00000000..89175985
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-viewmodel:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/2173da8f0e3b2f5d6ed51ddfa294cf15/lifecycle-viewmodel-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/2173da8f0e3b2f5d6ed51ddfa294cf15/lifecycle-viewmodel-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/2173da8f0e3b2f5d6ed51ddfa294cf15/lifecycle-viewmodel-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-viewmodel/2.3.1/55d6fa3541ca02167b0bd62a16fbdaec2a71622/lifecycle-viewmodel-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_savedstate_2_3_1_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_savedstate_2_3_1_aar.xml
new file mode 100644
index 00000000..2b8192f5
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_lifecycle_lifecycle_viewmodel_savedstate_2_3_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.lifecycle:lifecycle-viewmodel-savedstate:2.3.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d2ff709217adbaee68cbce4e138923f2/lifecycle-viewmodel-savedstate-2.3.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d2ff709217adbaee68cbce4e138923f2/lifecycle-viewmodel-savedstate-2.3.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d2ff709217adbaee68cbce4e138923f2/lifecycle-viewmodel-savedstate-2.3.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.lifecycle/lifecycle-viewmodel-savedstate/2.3.1/411f92301435123d502de27b6f3262c062f3bd7a/lifecycle-viewmodel-savedstate-2.3.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_loader_loader_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_loader_loader_1_0_0_aar.xml
new file mode 100644
index 00000000..906ad697
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_loader_loader_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.loader:loader:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/818f45328ee8f5b99bad88c27c6cc009/loader-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/818f45328ee8f5b99bad88c27c6cc009/loader-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/818f45328ee8f5b99bad88c27c6cc009/loader-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.loader/loader/1.0.0/b9ef587f3e46c7fe5b00264989764e43ff45cada/loader-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_localbroadcastmanager_localbroadcastmanager_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_localbroadcastmanager_localbroadcastmanager_1_0_0_aar.xml
new file mode 100644
index 00000000..5180a041
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_localbroadcastmanager_localbroadcastmanager_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.localbroadcastmanager:localbroadcastmanager:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b93e2b8a7319b8231fdc1936a598b860/localbroadcastmanager-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b93e2b8a7319b8231fdc1936a598b860/localbroadcastmanager-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b93e2b8a7319b8231fdc1936a598b860/localbroadcastmanager-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.localbroadcastmanager/localbroadcastmanager/1.0.0/3930e99159fd6b7f1d2e7d5fe9af0924ca1faf9/localbroadcastmanager-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_print_print_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_print_print_1_0_0_aar.xml
new file mode 100644
index 00000000..fa1aa068
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_print_print_1_0_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.print:print:1.0.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8503f66578d12caa389b09e1e5eca48/print-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.print/print/1.0.0/71fc2d9acf7cce6b96230c5af263268b1664914a/print-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_recyclerview_recyclerview_1_1_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_recyclerview_recyclerview_1_1_0_aar.xml
new file mode 100644
index 00000000..bdd817e8
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_recyclerview_recyclerview_1_1_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.recyclerview:recyclerview:1.1.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d36fb540275a3ffc163b383c0658378d/recyclerview-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.recyclerview/recyclerview/1.1.0/f2bdf79e1977939817f54a9d3e2f6bc52b63bdd0/recyclerview-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_savedstate_savedstate_1_1_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_savedstate_savedstate_1_1_0_aar.xml
new file mode 100644
index 00000000..9878a838
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_savedstate_savedstate_1_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.savedstate:savedstate:1.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b3cfbfb1b9d3c28903be03b381ffe5a1/savedstate-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b3cfbfb1b9d3c28903be03b381ffe5a1/savedstate-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b3cfbfb1b9d3c28903be03b381ffe5a1/savedstate-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.savedstate/savedstate/1.1.0/73464c2c55129727354a95ffa91dc9c2cf0c78b/savedstate-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_core_1_4_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_core_1_4_0_aar.xml
new file mode 100644
index 00000000..d68fc073
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_core_1_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test:core:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d391507829b11424361d4065fee5049c/core-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d391507829b11424361d4065fee5049c/core-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d391507829b11424361d4065fee5049c/core-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/core/1.4.0/96b4d161def059d92989a352500d05d215c33d5e/core-1.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/core/1.4.0/2ba6b5cb5392cc99bdc6fb1f188c95497358fb62/core-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_espresso_espresso_core_3_4_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_espresso_espresso_core_3_4_0_aar.xml
new file mode 100644
index 00000000..c9edeb37
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_espresso_espresso_core_3_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.espresso:espresso-core:3.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/29c676728f0270598991f2d3f9e0a108/espresso-core-3.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/29c676728f0270598991f2d3f9e0a108/espresso-core-3.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/29c676728f0270598991f2d3f9e0a108/espresso-core-3.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-core/3.4.0/527848e2722cd3ada150b991c0e620ec4f0a8b/espresso-core-3.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-core/3.4.0/8c2dc35c200b749281e0fbdc1262359e19a99cc3/espresso-core-3.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_espresso_espresso_idling_resource_3_4_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_espresso_espresso_idling_resource_3_4_0_aar.xml
new file mode 100644
index 00000000..37863515
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_espresso_espresso_idling_resource_3_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.espresso:espresso-idling-resource:3.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/97f635e023276073e65bb6220759b19e/espresso-idling-resource-3.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/97f635e023276073e65bb6220759b19e/espresso-idling-resource-3.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/97f635e023276073e65bb6220759b19e/espresso-idling-resource-3.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-idling-resource/3.4.0/69a300fcf8de2c433672d07a6c436a19dfb9b8f9/espresso-idling-resource-3.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.espresso/espresso-idling-resource/3.4.0/80fd2aa3695bf9e0383d53f2f39016960a0156a6/espresso-idling-resource-3.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_ext_junit_1_1_3_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_ext_junit_1_1_3_aar.xml
new file mode 100644
index 00000000..2de87d92
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_ext_junit_1_1_3_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.ext:junit:1.1.3@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1d0a8c40270d0f872a223d8d4fcef6a7/junit-1.1.3/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1d0a8c40270d0f872a223d8d4fcef6a7/junit-1.1.3/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/1d0a8c40270d0f872a223d8d4fcef6a7/junit-1.1.3/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.ext/junit/1.1.3/f138cf897cc1e024dd714073df04f2425d845104/junit-1.1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.ext/junit/1.1.3/cdf059d469527681d62d3330131eb875b77911d5/junit-1.1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_monitor_1_4_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_monitor_1_4_0_aar.xml
new file mode 100644
index 00000000..56b2b14c
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_monitor_1_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test:monitor:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/4dd63116c82307e666318756b46c6f8f/monitor-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/4dd63116c82307e666318756b46c6f8f/monitor-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/4dd63116c82307e666318756b46c6f8f/monitor-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/monitor/1.4.0/2770e38fa6d39242c2fa2e9d2ca3275b1d9debd8/monitor-1.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/monitor/1.4.0/5d892d39aae695079e3ecc7a841336ff3aeaf40/monitor-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_runner_1_4_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_runner_1_4_0_aar.xml
new file mode 100644
index 00000000..49fdf446
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_runner_1_4_0_aar.xml
@@ -0,0 +1,15 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test:runner:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8432b5c7b397613f563c0e4f808b7a60/runner-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8432b5c7b397613f563c0e4f808b7a60/runner-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/8432b5c7b397613f563c0e4f808b7a60/runner-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/runner/1.4.0/aee6a62a26d9b413dadc1732e66cc4ef3bcf9d61/runner-1.4.0-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test/runner/1.4.0/11ef580a9f2ea2fba4d060a3121506197bd6b183/runner-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_services_storage_1_4_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_services_storage_1_4_0_aar.xml
new file mode 100644
index 00000000..b3d37127
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_test_services_storage_1_4_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.test.services:storage:1.4.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cab7427031340e655b498850dc34743e/storage-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cab7427031340e655b498850dc34743e/storage-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/cab7427031340e655b498850dc34743e/storage-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.test.services/storage/1.4.0/27088f46bc0ab94523a20ccc56aa27e142662396/storage-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_transition_transition_1_2_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_transition_transition_1_2_0_aar.xml
new file mode 100644
index 00000000..b8df611c
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_transition_transition_1_2_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.transition:transition:1.2.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/53e075b3bec73fe3d64d75c20958e5c3/transition-1.2.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.transition/transition/1.2.0/65d2a5dab39f120d3f584fdead252ce81ec7dbee/transition-1.2.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_1_1_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_1_1_0_aar.xml
new file mode 100644
index 00000000..80d26425
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_1_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.vectordrawable:vectordrawable:1.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d9a1f9c79beb812a29c08dec8e929987/vectordrawable-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d9a1f9c79beb812a29c08dec8e929987/vectordrawable-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/d9a1f9c79beb812a29c08dec8e929987/vectordrawable-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.vectordrawable/vectordrawable/1.1.0/1e0694477eed874c50c54b547cc3e5a62a57a62b/vectordrawable-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_animated_1_1_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_animated_1_1_0_aar.xml
new file mode 100644
index 00000000..9ae57f62
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_vectordrawable_vectordrawable_animated_1_1_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.vectordrawable:vectordrawable-animated:1.1.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8265d5cb033aea9b3b2b59393038f53/vectordrawable-animated-1.1.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8265d5cb033aea9b3b2b59393038f53/vectordrawable-animated-1.1.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/f8265d5cb033aea9b3b2b59393038f53/vectordrawable-animated-1.1.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.vectordrawable/vectordrawable-animated/1.1.0/871a7705cd03bc246947638c712cdd11378233ff/vectordrawable-animated-1.1.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_versionedparcelable_versionedparcelable_1_1_1_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_versionedparcelable_versionedparcelable_1_1_1_aar.xml
new file mode 100644
index 00000000..df200125
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_versionedparcelable_versionedparcelable_1_1_1_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.versionedparcelable:versionedparcelable:1.1.1@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9c1a19876166723a3f4a522f5e580c9e/versionedparcelable-1.1.1/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9c1a19876166723a3f4a522f5e580c9e/versionedparcelable-1.1.1/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/9c1a19876166723a3f4a522f5e580c9e/versionedparcelable-1.1.1/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.versionedparcelable/versionedparcelable/1.1.1/d9085927216387af679d18b6f472bc0fc5c7cc81/versionedparcelable-1.1.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_viewpager2_viewpager2_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_viewpager2_viewpager2_1_0_0_aar.xml
new file mode 100644
index 00000000..d4ae1779
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_viewpager2_viewpager2_1_0_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.viewpager2:viewpager2:1.0.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/5511f57e160c7e247f5d805a7544c561/viewpager2-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.viewpager2/viewpager2/1.0.0/3c3569044e6969f1ee5c3aa03b08e6717a2d782f/viewpager2-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_viewpager_viewpager_1_0_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_viewpager_viewpager_1_0_0_aar.xml
new file mode 100644
index 00000000..65ed8399
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__androidx_viewpager_viewpager_1_0_0_aar.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: androidx.viewpager:viewpager:1.0.0@aar">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b9a8ccdf08677e6ebe8a29448e9bae04/viewpager-1.0.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b9a8ccdf08677e6ebe8a29448e9bae04/viewpager-1.0.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/b9a8ccdf08677e6ebe8a29448e9bae04/viewpager-1.0.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/androidx.viewpager/viewpager/1.0.0/db045f92188b9d247d5f556866f8861ab68528f0/viewpager-1.0.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__com_google_android_material_material_1_4_0_aar.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__com_google_android_material_material_1_4_0_aar.xml
new file mode 100644
index 00000000..e7f0e822
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__com_google_android_material_material_1_4_0_aar.xml
@@ -0,0 +1,16 @@
+<component name="libraryTable">
+  <library name="Gradle: com.google.android.material:material:1.4.0@aar">
+    <ANNOTATIONS>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/annotations.zip!/" />
+    </ANNOTATIONS>
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/jars/classes.jar!/" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/res" />
+      <root url="file://$USER_HOME$/.gradle/caches/transforms-2/files-2.1/10046aad9e73cbf22653afacdcab8838/material-1.4.0/AndroidManifest.xml" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.google.android.material/material/1.4.0/51035a8f6342c20d4d8f242d100e6f25e0c271ac/material-1.4.0-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__com_google_code_findbugs_jsr305_2_0_1.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__com_google_code_findbugs_jsr305_2_0_1.xml
new file mode 100644
index 00000000..2b834ea2
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__com_google_code_findbugs_jsr305_2_0_1.xml
@@ -0,0 +1,9 @@
+<component name="libraryTable">
+  <library name="Gradle: com.google.code.findbugs:jsr305:2.0.1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.google.code.findbugs/jsr305/2.0.1/516c03b21d50a644d538de0f0369c620989cd8f0/jsr305-2.0.1.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__com_squareup_javawriter_2_1_1.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__com_squareup_javawriter_2_1_1.xml
new file mode 100644
index 00000000..662b001e
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__com_squareup_javawriter_2_1_1.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: com.squareup:javawriter:2.1.1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.squareup/javawriter/2.1.1/67ff45d9ae02e583d0f9b3432a5ebbe05c30c966/javawriter-2.1.1.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.squareup/javawriter/2.1.1/f591a105db78771d0a1e7a277b3747556c528c22/javawriter-2.1.1-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/com.squareup/javawriter/2.1.1/5b31387d839a5cdaf5b6de3990da01f7f2b963c5/javawriter-2.1.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__javax_inject_javax_inject_1.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__javax_inject_javax_inject_1.xml
new file mode 100644
index 00000000..62012eaf
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__javax_inject_javax_inject_1.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: javax.inject:javax.inject:1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/javax.inject/javax.inject/1/6975da39a7040257bd51d21a231b76c915872d38/javax.inject-1.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/javax.inject/javax.inject/1/70ec961c25111ed9015d1af77772d96383c2d238/javax.inject-1-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/javax.inject/javax.inject/1/a00123f261762a7c5e0ec916a2c7c8298d29c400/javax.inject-1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__junit_junit_4_12.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__junit_junit_4_12.xml
new file mode 100644
index 00000000..6c078d62
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__junit_junit_4_12.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: junit:junit:4.12">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/2973d150c0dc1fefe998f834810d68f278ea58ec/junit-4.12.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/941a8be4506c65f0a9001c08812fb7da1e505e21/junit-4.12-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/a6c32b40bf3d76eca54e3c601e5d1470c86fcdfa/junit-4.12-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__junit_junit_4_13_2.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__junit_junit_4_13_2.xml
new file mode 100644
index 00000000..c2cb45da
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__junit_junit_4_13_2.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: junit:junit:4.13.2">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.13.2/8ac9e16d933b6fb43bc7f576336b8f4d7eb5ba12/junit-4.13.2.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.13.2/f2f3f384dacd2ade2ddf7aa7e0f4360dfee38672/junit-4.13.2-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.13.2/33987872a811fe4d4001ed494b07854822257f42/junit-4.13.2-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3.xml
new file mode 100644
index 00000000..09cf23d1
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: org.hamcrest:hamcrest-core:1.3">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/42a25dc3219429f0e5d060061f71acb49bf010a0/hamcrest-core-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/ad09811315f1d4f5756986575b0ea16b99cd686f/hamcrest-core-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/1dc37250fbc78e23a65a67fbbaf71d2e9cbc3c0b/hamcrest-core-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__org_hamcrest_hamcrest_integration_1_3.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__org_hamcrest_hamcrest_integration_1_3.xml
new file mode 100644
index 00000000..1a77dd83
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__org_hamcrest_hamcrest_integration_1_3.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: org.hamcrest:hamcrest-integration:1.3">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-integration/1.3/5de0c73fef18917cd85d0ab70bb23818685e4dfd/hamcrest-integration-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-integration/1.3/cc5884d4138d3376f574f6a3992acceedfc37bea/hamcrest-integration-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-integration/1.3/ae7787a563e6a1b1f17fd4ac43be3a3c8830cfda/hamcrest-integration-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__org_hamcrest_hamcrest_library_1_3.xml b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__org_hamcrest_hamcrest_library_1_3.xml
new file mode 100644
index 00000000..3d45e8e9
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/libraries/Gradle__org_hamcrest_hamcrest_library_1_3.xml
@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Gradle: org.hamcrest:hamcrest-library:1.3">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/4785a3c21320980282f9f33d0d1264a69040538f/hamcrest-library-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/4324046c5f99f3dc91b5370899fa3ae65fd137d2/hamcrest-library-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-library/1.3/47a7ee46628ab7133129cd7cef1e92657bc275e/hamcrest-library-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/modules.xml b/second/09_thread/SampleThreadAnimation/.idea/modules.xml
new file mode 100644
index 00000000..7da4e75b
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/modules.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/modules/SampleThreadAnimation.iml" filepath="$PROJECT_DIR$/.idea/modules/SampleThreadAnimation.iml" />
+      <module fileurl="file://$PROJECT_DIR$/.idea/modules/app/SampleThreadAnimation.app.iml" filepath="$PROJECT_DIR$/.idea/modules/app/SampleThreadAnimation.app.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/modules/SampleThreadAnimation.iml b/second/09_thread/SampleThreadAnimation/.idea/modules/SampleThreadAnimation.iml
new file mode 100644
index 00000000..ea58bc8a
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/modules/SampleThreadAnimation.iml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id="SampleThreadAnimation" external.linked.project.path="$MODULE_DIR$/../.." external.root.project.path="$MODULE_DIR$/../.." external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="java-gradle" name="Java-Gradle">
+      <configuration>
+        <option name="BUILD_FOLDER_PATH" value="$MODULE_DIR$/../../build" />
+        <option name="BUILDABLE" value="false" />
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/../..">
+      <excludeFolder url="file://$MODULE_DIR$/../../.gradle" />
+      <excludeFolder url="file://$MODULE_DIR$/../../build" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/.idea/modules/app/SampleThreadAnimation.app.iml b/second/09_thread/SampleThreadAnimation/.idea/modules/app/SampleThreadAnimation.app.iml
new file mode 100644
index 00000000..5f2e7460
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/modules/app/SampleThreadAnimation.app.iml
@@ -0,0 +1,97 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id=":app" external.linked.project.path="$MODULE_DIR$/../../../app" external.root.project.path="$MODULE_DIR$/../../.." external.system.id="GRADLE" external.system.module.group="SampleThreadAnimation" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="android-gradle" name="Android-Gradle">
+      <configuration>
+        <option name="GRADLE_PROJECT_PATH" value=":app" />
+        <option name="LAST_SUCCESSFUL_SYNC_AGP_VERSION" value="4.2.2" />
+        <option name="LAST_KNOWN_AGP_VERSION" value="4.2.2" />
+      </configuration>
+    </facet>
+    <facet type="android" name="Android">
+      <configuration>
+        <option name="SELECTED_BUILD_VARIANT" value="debug" />
+        <option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
+        <option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
+        <afterSyncTasks>
+          <task>generateDebugSources</task>
+        </afterSyncTasks>
+        <option name="ALLOW_USER_CONFIGURATION" value="false" />
+        <option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
+        <option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
+        <option name="RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/../../../app/src/main/res;file://$MODULE_DIR$/../../../app/src/debug/res;file://$MODULE_DIR$/../../../app/build/generated/res/rs/debug;file://$MODULE_DIR$/../../../app/build/generated/res/resValues/debug" />
+        <option name="TEST_RES_FOLDERS_RELATIVE_PATH" value="file://$MODULE_DIR$/../../../app/src/androidTest/res;file://$MODULE_DIR$/../../../app/src/androidTestDebug/res;file://$MODULE_DIR$/../../../app/build/generated/res/rs/androidTest/debug;file://$MODULE_DIR$/../../../app/build/generated/res/resValues/androidTest/debug" />
+        <option name="ASSETS_FOLDER_RELATIVE_PATH" value="/src/main/assets" />
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output url="file://$MODULE_DIR$/../../../app/build/intermediates/javac/debug/classes" />
+    <output-test url="file://$MODULE_DIR$/../../../app/build/intermediates/javac/debugUnitTest/classes" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/../../../app">
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/androidTest/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/test/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/../../../app/src/main/res" type="java-resource" />
+      <excludeFolder url="file://$MODULE_DIR$/../../../app/.gradle" />
+      <excludeFolder url="file://$MODULE_DIR$/../../../app/build" />
+    </content>
+    <orderEntry type="jdk" jdkName="Android API 30 Platform" jdkType="Android SDK" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="TEST" name="Gradle: junit:junit:4.13.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: org.hamcrest:hamcrest-core:1.3" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: junit:junit:4.12" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: org.hamcrest:hamcrest-integration:1.3" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: org.hamcrest:hamcrest-library:1.3" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: com.google.code.findbugs:jsr305:2.0.1" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: com.squareup:javawriter:2.1.1" level="project" />
+    <orderEntry type="library" scope="TEST" name="Gradle: javax.inject:javax.inject:1" level="project" />
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+</module>
\ No newline at end of file
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new file mode 100644
index 00000000..18e4607d
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/.idea/workspace.xml
@@ -0,0 +1,161 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AndroidLayouts">
+    <shared>
+      <config />
+    </shared>
+  </component>
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+  </component>
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+        <item name="LOCAL_ROOT" type="e8cecc67:BranchNodeDescriptor" />
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+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="LOCAL_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:second" type="e8cecc67:BranchNodeDescriptor" />
+      </path>
+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
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+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="REMOTE_ROOT" type="e8cecc67:BranchNodeDescriptor" />
+        <item name="GROUP_NODE:origin" type="e8cecc67:BranchNodeDescriptor" />
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+      <path>
+        <item name="ROOT" type="e8cecc67:BranchNodeDescriptor" />
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+    <select />
+  </component>
+  <component name="ChangeListManager">
+    <list default="true" id="32c72550-7617-4d58-adfd-4ecd533a0f29" name="Default Changelist" comment="" />
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+    <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
+    <option name="LAST_RESOLUTION" value="IGNORE" />
+  </component>
+  <component name="ExecutionTargetManager" SELECTED_TARGET="device_and_snapshot_combo_box_target[VirtualDevicePath@/Users/jjuyaa/.android/avd/Pixel_3a_API_30_x86.avd]" />
+  <component name="ExternalProjectsData">
+    <projectState path="$PROJECT_DIR$">
+      <ProjectState />
+    </projectState>
+  </component>
+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$/../../.." />
+  </component>
+  <component name="ProjectId" id="1wvLEua8yr96eUO7zscgOA4rL7S" />
+  <component name="ProjectLevelVcsManager" settingsEditedManually="true" />
+  <component name="ProjectViewState">
+    <option name="hideEmptyMiddlePackages" value="true" />
+    <option name="showLibraryContents" value="true" />
+  </component>
+  <component name="PropertiesComponent">
+    <property name="RunOnceActivity.OpenProjectViewOnStart" value="true" />
+    <property name="memory.settings.postsync.last.time.stamp" value="1629334023868" />
+    <property name="settings.editor.selected.configurable" value="AndroidSdkUpdater" />
+  </component>
+  <component name="RecentsManager">
+    <key name="MoveFile.RECENT_KEYS">
+      <recent name="$PROJECT_DIR$/app/src/main/res/drawable" />
+    </key>
+  </component>
+  <component name="RunManager">
+    <configuration default="true" type="AndroidJUnit" factoryName="Android JUnit">
+      <option name="TEST_OBJECT" value="class" />
+      <option name="WORKING_DIRECTORY" value="$MODULE_DIR$" />
+      <method v="2">
+        <option name="Android.Gradle.BeforeRunTask" enabled="true" />
+      </method>
+    </configuration>
+    <configuration name="app" type="AndroidRunConfigurationType" factoryName="Android App">
+      <module name="SampleThreadAnimation.app" />
+      <option name="DEPLOY" value="true" />
+      <option name="DEPLOY_APK_FROM_BUNDLE" value="false" />
+      <option name="DEPLOY_AS_INSTANT" value="false" />
+      <option name="ARTIFACT_NAME" value="" />
+      <option name="PM_INSTALL_OPTIONS" value="" />
+      <option name="ALL_USERS" value="false" />
+      <option name="ALWAYS_INSTALL_WITH_PM" value="false" />
+      <option name="DYNAMIC_FEATURES_DISABLED_LIST" value="" />
+      <option name="ACTIVITY_EXTRA_FLAGS" value="" />
+      <option name="MODE" value="default_activity" />
+      <option name="CLEAR_LOGCAT" value="false" />
+      <option name="SHOW_LOGCAT_AUTOMATICALLY" value="false" />
+      <option name="SKIP_NOOP_APK_INSTALLATIONS" value="true" />
+      <option name="FORCE_STOP_RUNNING_APP" value="true" />
+      <option name="TARGET_SELECTION_MODE" value="DEVICE_AND_SNAPSHOT_COMBO_BOX" />
+      <option name="SELECTED_CLOUD_MATRIX_CONFIGURATION_ID" value="-1" />
+      <option name="SELECTED_CLOUD_MATRIX_PROJECT_ID" value="" />
+      <option name="DEBUGGER_TYPE" value="Auto" />
+      <Auto>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Auto>
+      <Hybrid>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
+      </Hybrid>
+      <Java />
+      <Native>
+        <option name="USE_JAVA_AWARE_DEBUGGER" value="false" />
+        <option name="SHOW_STATIC_VARS" value="true" />
+        <option name="WORKING_DIR" value="" />
+        <option name="TARGET_LOGGING_CHANNELS" value="lldb process:gdb-remote packets" />
+        <option name="SHOW_OPTIMIZED_WARNING" value="true" />
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+        <option name="STARTUP_PROFILING_ENABLED" value="false" />
+        <option name="STARTUP_CPU_PROFILING_ENABLED" value="false" />
+        <option name="STARTUP_CPU_PROFILING_CONFIGURATION_NAME" value="Sample Java Methods" />
+        <option name="STARTUP_NATIVE_MEMORY_PROFILING_ENABLED" value="false" />
+        <option name="NATIVE_MEMORY_SAMPLE_RATE_BYTES" value="2048" />
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+  <component name="SpellCheckerSettings" RuntimeDictionaries="0" Folders="0" CustomDictionaries="0" DefaultDictionary="application-level" UseSingleDictionary="true" transferred="true" />
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+</project>
\ No newline at end of file
diff --git a/second/09_thread/SampleThreadAnimation/local.properties b/second/09_thread/SampleThreadAnimation/local.properties
new file mode 100644
index 00000000..0c001059
--- /dev/null
+++ b/second/09_thread/SampleThreadAnimation/local.properties
@@ -0,0 +1,10 @@
+## This file is automatically generated by Android Studio.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+#
+# This file should *NOT* be checked into Version Control Systems,
+# as it contains information specific to your local configuration.
+#
+# Location of the SDK. This is only used by Gradle.
+# For customization when using a Version Control System, please read the
+# header note.
+sdk.dir=/Users/jjuyaa/Library/Android/sdk
\ No newline at end of file