Completed

app/build.gradle

@@ -3,12 +3,12 @@ apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
 
 android {
-    compileSdkVersion 26
+    compileSdkVersion 25
     buildToolsVersion "25.0.2"
     defaultConfig {
         applicationId "com.codingblocks.restapiretrofitjson"
         minSdkVersion 16
-        targetSdkVersion 26
+        targetSdkVersion 25
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
@@ -27,12 +27,13 @@ dependencies {
         exclude group: 'com.android.support', module: 'support-annotations'
     })
     compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
-    compile 'com.android.support:appcompat-v7:26.+'
-    compile 'com.android.support:recyclerview-v7:26.+'
-    compile 'com.android.support:cardview-v7:26.+'
+    compile 'com.android.support:appcompat-v7:25.3.1'
+    compile 'com.android.support:recyclerview-v7:25.3.1'
+    compile 'com.android.support:cardview-v7:25.3.1'
     compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha8'
     compile 'com.squareup.retrofit2:retrofit:2.3.0'
     compile 'com.squareup.retrofit2:converter-gson:2.3.0'
+    compile 'com.squareup.picasso:picasso:2.5.2'
     testCompile 'junit:junit:4.12'
 }
 repositories {

app/src/main/AndroidManifest.xml

@@ -14,14 +14,18 @@
         <activity android:name=".activities.UsersActivity" />
         <activity android:name=".activities.PostsActivity" />
         <activity android:name=".activities.CommentsActivity" />
+        <activity android:name=".activities.TodosActivity" />
+        <activity android:name=".activities.AlbumActivity" />
+        <activity android:name=".activities.PhotosActivity" />
+        <activity android:name=".activities.Temporary" />
         <activity android:name=".MainActivity">
+
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
 
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".activities.TodosActivity"></activity>
     </application>
 
 </manifest>

app/src/main/java/com/codingblocks/restapiretrofitjson/MainActivity.kt

@@ -1,8 +1,10 @@
 package com.codingblocks.restapiretrofitjson
 
+
 import android.content.Intent
 import android.support.v7.app.AppCompatActivity
 import android.os.Bundle
+import com.codingblocks.restapiretrofitjson.activities.AlbumActivity
 import com.codingblocks.restapiretrofitjson.activities.PostsActivity
 import com.codingblocks.restapiretrofitjson.activities.TodosActivity
 import com.codingblocks.restapiretrofitjson.activities.UsersActivity
@@ -26,7 +28,10 @@ class MainActivity : AppCompatActivity() {
         btnTodos.setOnClickListener({
             startActivity(Intent(this@MainActivity, TodosActivity::class.java))
         })
+        btnAlbums.setOnClickListener({
+            startActivity(Intent(this@MainActivity, AlbumActivity::class.java))
+        })
 
 
     }
-}
+}

app/src/main/java/com/codingblocks/restapiretrofitjson/activities/PostsActivity.java

@@ -8,7 +8,6 @@
 import android.util.Log;
 import android.view.View;
 
-import com.codingblocks.restapiretrofitjson.MainActivity;
 import com.codingblocks.restapiretrofitjson.R;
 import com.codingblocks.restapiretrofitjson.adapters.PostAdapter;
 import com.codingblocks.restapiretrofitjson.api.API;

app/src/main/java/com/codingblocks/restapiretrofitjson/api/API.java

@@ -14,7 +14,9 @@ public class API {
     private PostsAPI postsAPI;
     private UsersAPI usersAPI;
     private CommentsAPI commentsAPI;
-    private TodosAPI todosAPI;
+    private TodosAPI todoAPI;
+    private AlbumAPI albumAPI;
+    private PhotosAPI photoAPI;
 
     public PostsAPI getPostsAPI() {
         return postsAPI;
@@ -28,11 +30,19 @@ public CommentsAPI getCommentsAPI() {
         return commentsAPI;
     }
 
-    public TodosAPI getTodosAPI() {
-        return todosAPI;
+    public TodosAPI getTodoAPI() {
+        return todoAPI;
     }
 
-    private API() {
+    public AlbumAPI getAlbumAPI() {
+        return albumAPI;
+    }
+
+    public PhotosAPI getPhotoAPI() {
+        return photoAPI;
+    }
+
+    private API () {
         Retrofit retrofit = new Retrofit.Builder()
                 .baseUrl("https://jsonplaceholder.typicode.com")
                 .addConverterFactory(
@@ -43,10 +53,12 @@ private API() {
         postsAPI = retrofit.create(PostsAPI.class);
         usersAPI = retrofit.create(UsersAPI.class);
         commentsAPI = retrofit.create(CommentsAPI.class);
-        todosAPI = retrofit.create(TodosAPI.class);
+        todoAPI=retrofit.create(TodosAPI.class);
+        albumAPI=retrofit.create(AlbumAPI.class);
+        photoAPI=retrofit.create(PhotosAPI.class);
     }
 
-    public static API getInstance() {
+    public static API getInstance () {
         if (apiInstance == null) {
             apiInstance = new API();
         }

app/src/main/java/com/codingblocks/restapiretrofitjson/api/TodosAPI.java

@@ -9,6 +9,7 @@
 
 import retrofit2.Call;
 import retrofit2.http.GET;
+import retrofit2.http.Path;
 import retrofit2.http.Query;
 
 /**
@@ -17,10 +18,17 @@
 
 public interface TodosAPI {
 
-    @GET("/todos")
-    Call<ArrayList<Todo>> getTodos(
-            @Nullable
-            @Query("userId") Integer userId
+    @GET ("/todos")
+    Call<ArrayList<Todo>> getTodos();
+
+    @GET ("/todos")
+    Call<ArrayList<Todo>> getTodoByUserId(
+            @Query("userId")int userId
+    );
+
+    @GET ("/todos/{id}")
+    Call<ArrayList<Todo>> getTodoById(
+            @Path("id") int id
     );