Upgrade version, fix deprecation code, enhance experience.

app/build.gradle

@@ -2,7 +2,6 @@ apply plugin: 'com.android.application'
 
 android {
     compileSdkVersion Integer.parseInt(project.ANDROID_COMPILE_SDK_VERSION)
-    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
 
     defaultConfig {
         applicationId "com.akexorcist.localizationapp"
@@ -22,6 +21,7 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+    buildToolsVersion = '27.0.3'
 }
 
 dependencies {

app/src/main/java/com/akexorcist/localizationapp/MainActivity.java

@@ -5,14 +5,15 @@
 import android.view.View;
 
 import com.akexorcist.localizationactivity.ui.LocalizationActivity;
+import com.akexorcist.localizationapp.customactivity.CustomActivity;
 import com.akexorcist.localizationapp.customactivity.SimpleCustomActivity;
 import com.akexorcist.localizationapp.nestedfragment.NestedFragmentActivity;
 import com.akexorcist.localizationapp.simpleactivity.SimpleActivity;
 import com.akexorcist.localizationapp.simplefragment.SimpleFragmentActivity;
 import com.akexorcist.localizationapp.stackedactivity.Stack1Activity;
 import com.akexorcist.localizationapp.viewpager.ViewPagerActivity;
 
-public class MainActivity extends LocalizationActivity {
+public class MainActivity extends CustomActivity {
 
     @Override
     public void onCreate(Bundle savedInstanceState) {
@@ -30,30 +31,30 @@ public void onCreate(Bundle savedInstanceState) {
     }
 
     public View.OnClickListener onSimpleActivityClick() {
-        return view -> goToActivity(SimpleActivity.class);
+        return view -> openActivity(SimpleActivity.class);
     }
 
     public View.OnClickListener onCustomActivityClick() {
-        return view -> goToActivity(SimpleCustomActivity.class);
+        return view -> openActivity(SimpleCustomActivity.class);
     }
 
     public View.OnClickListener onStackedActivityClick() {
-        return view -> goToActivity(Stack1Activity.class);
+        return view -> openActivity(Stack1Activity.class);
     }
 
     public View.OnClickListener onSimpleFragmentClick() {
-        return view -> goToActivity(SimpleFragmentActivity.class);
+        return view -> openActivity(SimpleFragmentActivity.class);
     }
 
     private View.OnClickListener onNestedFragmentClick() {
-        return view -> goToActivity(NestedFragmentActivity.class);
+        return view -> openActivity(NestedFragmentActivity.class);
     }
 
     public View.OnClickListener onViewPagerClick() {
-        return view -> goToActivity(ViewPagerActivity.class);
+        return view -> openActivity(ViewPagerActivity.class);
     }
 
-    public void goToActivity(Class<?> activity) {
+    public void openActivity(Class<?> activity) {
         Intent intent = new Intent(this, activity);
         startActivity(intent);
     }

build.gradle

@@ -6,7 +6,7 @@ buildscript {
         google()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.0.0'
+        classpath 'com.android.tools.build:gradle:3.2.0-alpha08'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files

gradle.properties

@@ -32,7 +32,7 @@ POM_LICENCE_DIST=repo
 POM_DEVELOPER_ID=Akexorcist
 POM_DEVELOPER_NAME=Somkiat Khitwongwattana
 
-ANDROID_BUILD_TOOLS_VERSION=26.0.2
-ANDROID_COMPILE_SDK_VERSION=26
-ANDROID_TARGET_SDK_VERSION=26
+ANDROID_BUILD_TOOLS_VERSION=27.0.3
+ANDROID_COMPILE_SDK_VERSION=27
+ANDROID_TARGET_SDK_VERSION=27
 ANDROID_MIN_SDK=17

gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-all.zip

localizationActivity/build.gradle

@@ -2,7 +2,6 @@ apply plugin: 'com.android.library'
 
 android {
     compileSdkVersion Integer.parseInt(project.ANDROID_COMPILE_SDK_VERSION)
-    buildToolsVersion project.ANDROID_BUILD_TOOLS_VERSION
 
     defaultConfig {
         minSdkVersion Integer.parseInt(project.ANDROID_MIN_SDK)
@@ -18,6 +17,7 @@ android {
             res.srcDirs = ['src/main/res']
         }
     }
+    buildToolsVersion = '27.0.3'
 }
 
 dependencies {

localizationActivity/src/main/AndroidManifest.xml

@@ -1,12 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<manifest
-    xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.akexorcist.localizationactivity">
 
-    <application>
-        <activity
-            android:name=".ui.BlankDummyActivity"
-            android:theme="@android:style/Theme.Black.NoTitleBar" />
-    </application>
-
 </manifest>

localizationActivity/src/main/java/com/akexorcist/localizationactivity/core/LocalizationActivityDelegate.java

@@ -9,10 +9,10 @@
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.LocaleList;
+import android.support.v4.app.ActivityCompat;
+import android.support.v4.app.ActivityOptionsCompat;
 import android.util.DisplayMetrics;
 
-import com.akexorcist.localizationactivity.ui.BlankDummyActivity;
-
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Locale;
@@ -83,14 +83,11 @@ public Context getApplicationContext(Context applicationContext) {
     }
 
     public Resources getResources(Resources resources) {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
-            Configuration config = resources.getConfiguration();
-            config.locale = LanguageSetting.getLanguage(activity);
-            DisplayMetrics metrics = resources.getDisplayMetrics();
-            return new Resources(activity.getAssets(), metrics, config);
-        } else {
-            return resources;
-        }
+        Configuration config = resources.getConfiguration();
+        Locale locale = LanguageSetting.getLanguage(activity);
+        config.setLocale(locale);
+        DisplayMetrics metrics = resources.getDisplayMetrics();
+        return new Resources(activity.getAssets(), metrics, config);
     }
 
     // Provide method to set application language by country name.
@@ -156,12 +153,14 @@ private void setupLocale(Locale locale) {
 
 
     private void updateLocaleConfiguration(Context context, Locale locale) {
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
-            Configuration config = context.getResources().getConfiguration();
+        Configuration config = context.getResources().getConfiguration();
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            config.setLocale(locale);
+        } else {
             config.locale = locale;
-            DisplayMetrics dm = context.getResources().getDisplayMetrics();
-            context.getResources().updateConfiguration(config, dm);
         }
+        DisplayMetrics dm = context.getResources().getDisplayMetrics();
+        context.getResources().updateConfiguration(config, dm);
     }
 
     // Avoid duplicated setup
@@ -173,17 +172,15 @@ private boolean isCurrentLanguageSetting(Context context, Locale locale) {
     private void notifyLanguageChanged() {
         sendOnBeforeLocaleChangedEvent();
         activity.getIntent().putExtra(KEY_ACTIVITY_LOCALE_CHANGED, true);
-        callDummyActivity();
-        activity.recreate();
+        recreate(activity, true);
     }
 
     // Check if locale has change while this activity was run to back stack.
     private void checkLocaleChange(Context context) {
         if (!isCurrentLanguageSetting(context, currentLanguage)) {
             sendOnBeforeLocaleChangedEvent();
             isLocalizationChanged = true;
-            callDummyActivity();
-            activity.recreate();
+            recreate(activity, true);
         }
     }
 
@@ -207,7 +204,33 @@ private void sendOnAfterLocaleChangedEvent() {
         }
     }
 
-    private void callDummyActivity() {
-        activity.startActivity(new Intent(activity, BlankDummyActivity.class));
+    /**
+     * Helper method to recreate the Activity. This method should be called after a Locale change.
+     * @param activity the Activity that will be recreated
+     * @param animate a flag indicating if the recreation will be animated or not
+     */
+    public static void recreate(Activity activity, boolean animate) {
+        Intent restartIntent = new Intent(activity, activity.getClass());
+
+        Bundle extras = activity.getIntent().getExtras();
+        if (extras != null) {
+            restartIntent.putExtras(extras);
+        }
+
+        if (animate) {
+            ActivityCompat.startActivity(
+                    activity,
+                    restartIntent,
+                    ActivityOptionsCompat
+                            .makeCustomAnimation(activity, android.R.anim.fade_in, android.R.anim.fade_out)
+                            .toBundle()
+            );
+        } else {
+            activity.startActivity(restartIntent);
+            activity.overridePendingTransition(0, 0);
+        }
+
+        activity.finish();
+
     }
 }