Completed all functionalities

app/build.gradle

@@ -33,6 +33,7 @@ dependencies {
     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

@@ -21,7 +21,10 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".activities.TodosActivity"></activity>
+        <activity android:name=".activities.TodosActivity" />
+        <activity android:name=".activities.AlbumsActivity" />
+        <activity android:name=".activities.PhotosListActivity" />
+        <activity android:name=".activities.PhotoViewActivity"></activity>
     </application>
 
 </manifest>

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

@@ -3,6 +3,7 @@ package com.codingblocks.restapiretrofitjson
 import android.content.Intent
 import android.support.v7.app.AppCompatActivity
 import android.os.Bundle
+import com.codingblocks.restapiretrofitjson.activities.AlbumsActivity
 import com.codingblocks.restapiretrofitjson.activities.PostsActivity
 import com.codingblocks.restapiretrofitjson.activities.TodosActivity
 import com.codingblocks.restapiretrofitjson.activities.UsersActivity
@@ -27,6 +28,8 @@ class MainActivity : AppCompatActivity() {
             startActivity(Intent(this@MainActivity, TodosActivity::class.java))
         })
 
-
+        btnAlbums.setOnClickListener({
+            startActivity(Intent(this@MainActivity, AlbumsActivity::class.java))
+        })
     }
 }

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

@@ -0,0 +1,59 @@
+package com.codingblocks.restapiretrofitjson.activities;
+
+import android.content.Intent;
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.support.v7.widget.LinearLayoutManager;
+import android.support.v7.widget.RecyclerView;
+import android.util.Log;
+import android.view.View;
+
+import com.codingblocks.restapiretrofitjson.R;
+import com.codingblocks.restapiretrofitjson.adapters.AlbumAdapter;
+import com.codingblocks.restapiretrofitjson.adapters.UserAdapter;
+import com.codingblocks.restapiretrofitjson.api.API;
+import com.codingblocks.restapiretrofitjson.interfaces.OnItemClickListener;
+import com.codingblocks.restapiretrofitjson.models.Album;
+
+import java.util.ArrayList;
+
+import retrofit2.Call;
+import retrofit2.Callback;
+import retrofit2.Response;
+
+public class AlbumsActivity extends AppCompatActivity {
+    final String TAG = "AlbumAct";
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_albums);
+
+        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.rvAlbumList);
+        final AlbumAdapter albumAdapter = new AlbumAdapter(this, new ArrayList<Album>());
+        recyclerView.setLayoutManager(new LinearLayoutManager(this));
+        recyclerView.setAdapter(albumAdapter);
+
+        albumAdapter.setOnItemClickListener(new OnItemClickListener() {
+            @Override
+            public void onItemClick(int itemId, View view) {
+                Intent albumIntent = new Intent(AlbumsActivity.this, PhotosListActivity.class);
+                albumIntent.putExtra("albumId", itemId);
+                startActivity(albumIntent);
+            }
+        });
+
+        API.getInstance().getAlbumsAPI().getAllAlbums().enqueue(new Callback<ArrayList<Album>>() {
+            @Override
+            public void onResponse(Call<ArrayList<Album>> call, Response<ArrayList<Album>> response) {
+                Log.d(TAG, "onResponse: ");
+                albumAdapter.updateAdapter(response.body());
+            }
+
+            @Override
+            public void onFailure(Call<ArrayList<Album>> call, Throwable t) {
+                Log.d(TAG, "onFailure: ");
+            }
+        });
+
+    }
+}

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

@@ -0,0 +1,22 @@
+package com.codingblocks.restapiretrofitjson.activities;
+
+import android.support.v7.app.AppCompatActivity;
+import android.os.Bundle;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.codingblocks.restapiretrofitjson.R;
+import com.squareup.picasso.Picasso;
+
+public class PhotoViewActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_photo_view);
+
+        Picasso.with(this).load(getIntent().getStringExtra("url")).placeholder(R.mipmap.loading_image_2_icon)
+                .into((ImageView) findViewById(R.id.ivPhoto));
+        ((TextView)findViewById(R.id.tvPhotoViewTitle)).setText(getIntent().getStringExtra("title"));
+    }
+}

app/src/main/java/com/codingblocks/restapiretrofitjson/activities/PhotosListActivity.kt

@@ -0,0 +1,44 @@
+package com.codingblocks.restapiretrofitjson.activities
+
+import android.content.Intent
+import android.support.v7.app.AppCompatActivity
+import android.os.Bundle
+import android.support.v7.widget.LinearLayoutManager
+import android.support.v7.widget.RecyclerView
+import android.widget.Toast
+import kotlinx.android.synthetic.main.activity_photos_list.*
+
+import com.codingblocks.restapiretrofitjson.R
+import com.codingblocks.restapiretrofitjson.adapters.PhotoListAdapter
+import com.codingblocks.restapiretrofitjson.api.API
+import com.codingblocks.restapiretrofitjson.interfaces.OnItemClickListener
+import com.codingblocks.restapiretrofitjson.models.Photo
+import retrofit2.Call
+import retrofit2.Callback
+import retrofit2.Response
+
+class PhotosListActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_photos_list)
+
+        var photoListAdapter : PhotoListAdapter = PhotoListAdapter(this, ArrayList<Photo>())
+
+        rvPhotosList.layoutManager = LinearLayoutManager(this)
+        rvPhotosList.adapter = photoListAdapter
+
+        var photoListCallback = object: Callback<ArrayList<Photo>> {
+            override fun onResponse(call: Call<ArrayList<Photo>>?, response: Response<ArrayList<Photo>>?) {
+                photoListAdapter.updatePhotos(response?.body())
+            }
+
+            override fun onFailure(call: Call<ArrayList<Photo>>?, t: Throwable?) {
+                TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
+            }
+        }
+
+        API.getInstance().photoAPI.getPhotosOfAlbumId(intent.getIntExtra("albumId",-1))
+                .enqueue(photoListCallback)
+    }
+}

app/src/main/java/com/codingblocks/restapiretrofitjson/adapters/AlbumAdapter.kt

@@ -0,0 +1,58 @@
+package com.codingblocks.restapiretrofitjson.adapters
+
+import android.content.Context
+import android.support.v7.widget.RecyclerView
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import com.codingblocks.restapiretrofitjson.R
+import com.codingblocks.restapiretrofitjson.interfaces.OnItemClickListener
+import com.codingblocks.restapiretrofitjson.models.Album
+import kotlinx.android.synthetic.main.list_item_album.view.*
+
+/**
+ * Created by abheisenberg on 2/7/17.
+ */
+
+class AlbumAdapter (private val context: Context,
+                    private var albumsList: ArrayList<Album>?)
+    : RecyclerView.Adapter<AlbumAdapter.AlbumHolder>() {
+
+    internal var onItemClickListener : OnItemClickListener? = null
+
+    fun setOnItemClickListener(onItemClickListener: OnItemClickListener) {
+        this.onItemClickListener = onItemClickListener
+    }
+
+    fun updateAdapter(newAlbumList: ArrayList<Album>) {
+        this.albumsList = newAlbumList
+        notifyDataSetChanged()
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int): AlbumHolder {
+        val itemView = LayoutInflater.from(parent?.context)
+                .inflate(R.layout.list_item_album, parent, false)
+        return AlbumHolder(itemView)
+    }
+
+    override fun onBindViewHolder(holder: AlbumHolder?, position: Int) {
+        holder?.BindAlbum(albumsList!![position])
+    }
+
+    override fun getItemCount(): Int {
+        return albumsList!!.size
+    }
+
+    inner class AlbumHolder (public var thisView: View)
+        : RecyclerView.ViewHolder(thisView) {
+
+        fun BindAlbum(album: Album) {
+            thisView.tvAlbumTitle.text = album.title
+            thisView.setOnClickListener {
+                onItemClickListener?.onItemClick(album.id
+                , thisView)
+            }
+        }
+    }
+
+}

app/src/main/java/com/codingblocks/restapiretrofitjson/adapters/PhotoListAdapter.kt

@@ -0,0 +1,56 @@
+package com.codingblocks.restapiretrofitjson.adapters
+
+import android.content.Context
+import android.content.Intent
+import android.support.v7.widget.RecyclerView
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import com.codingblocks.restapiretrofitjson.R
+import com.codingblocks.restapiretrofitjson.activities.PhotoViewActivity
+import com.codingblocks.restapiretrofitjson.interfaces.OnItemClickListener
+import com.codingblocks.restapiretrofitjson.models.Photo
+import com.squareup.picasso.Picasso
+import kotlinx.android.synthetic.main.list_item_photos.view.*
+
+/**
+ * Created by abheisenberg on 2/7/17.
+ */
+class PhotoListAdapter (private val context: Context,
+                        private var photosList: ArrayList<Photo>?
+) : RecyclerView.Adapter<PhotoListAdapter.photoHolder>() {
+
+    fun updatePhotos(newPhotoList: ArrayList<Photo>?) {
+        this.photosList = newPhotoList
+        notifyDataSetChanged()
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup?, viewType: Int): photoHolder {
+        val itemView : View = LayoutInflater.from(parent?.context).inflate(R.layout.list_item_photos, parent, false)
+        return photoHolder(itemView)
+    }
+
+    override fun onBindViewHolder(holder: photoHolder?, position: Int) {
+        holder?.BindPhotoHolder(photosList!![position])
+        holder?.thisView?.setOnClickListener {
+            context.startActivity(Intent(context, PhotoViewActivity::class.java)
+                    .putExtra("title",photosList!![position].title)
+                    .putExtra("url",photosList!![position].url))
+        }
+    }
+
+    override fun getItemCount(): Int {
+        return photosList!!.size
+    }
+
+    inner class photoHolder (public var thisView: View) : RecyclerView.ViewHolder(thisView)
+    {
+        fun BindPhotoHolder(photo: Photo) {
+            Picasso.with(context).load(photo.thumbnailUrl)
+                    .placeholder(R.mipmap.loading_image_2_icon)
+                    .into(thisView.ivThumbnail)
+            thisView.tvPhotoTitle.text = photo.title
+        }
+    }
+
+}

app/src/main/java/com/codingblocks/restapiretrofitjson/adapters/TodoAdapter.kt

@@ -47,7 +47,8 @@ public class TodoAdapter (
         : RecyclerView.ViewHolder(itemView) {
 
         fun bindTodo(todo: Todo) {
-            itemView.tvTodoTitle.text = todo.title;
+            itemView.tvTodoTitle.text = todo.title
+            itemView.cbCompleted.isChecked = todo.completed
         }
     }
 }

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

@@ -1,5 +1,7 @@
 package com.codingblocks.restapiretrofitjson.api;
 
+import com.codingblocks.restapiretrofitjson.models.Photo;
+
 import retrofit2.Retrofit;
 import retrofit2.converter.gson.GsonConverterFactory;
 
@@ -15,6 +17,16 @@ public class API {
     private UsersAPI usersAPI;
     private CommentsAPI commentsAPI;
     private TodosAPI todosAPI;
+    private AlbumAPI albumsAPI;
+    private PhotoAPI photoAPI;
+
+    public PhotoAPI getPhotoAPI() {
+        return photoAPI;
+    }
+
+    public AlbumAPI getAlbumsAPI() {
+        return albumsAPI;
+    }
 
     public PostsAPI getPostsAPI() {
         return postsAPI;
@@ -44,6 +56,8 @@ private API() {
         usersAPI = retrofit.create(UsersAPI.class);
         commentsAPI = retrofit.create(CommentsAPI.class);
         todosAPI = retrofit.create(TodosAPI.class);
+        albumsAPI = retrofit.create(AlbumAPI.class);
+        photoAPI = retrofit.create(PhotoAPI.class);
     }
 
     public static API getInstance() {

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

@@ -0,0 +1,17 @@
+package com.codingblocks.restapiretrofitjson.api;
+
+import com.codingblocks.restapiretrofitjson.models.Album;
+
+import java.util.ArrayList;
+
+import retrofit2.Call;
+import retrofit2.http.GET;
+
+/**
+ * Created by abheisenberg on 2/7/17.
+ */
+
+public interface AlbumAPI {
+    @GET("/albums")
+    Call<ArrayList<Album>> getAllAlbums();
+}

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

@@ -0,0 +1,20 @@
+package com.codingblocks.restapiretrofitjson.api;
+
+import com.codingblocks.restapiretrofitjson.models.Photo;
+
+import java.util.ArrayList;
+
+import retrofit2.Call;
+import retrofit2.http.GET;
+import retrofit2.http.Query;
+
+/**
+ * Created by abheisenberg on 2/7/17.
+ */
+
+public interface PhotoAPI {
+
+    @GET("/photos")
+    Call<ArrayList<Photo>> getPhotosOfAlbumId(@Query("albumId") int albumId);
+
+}

app/src/main/java/com/codingblocks/restapiretrofitjson/models/Album.kt

@@ -0,0 +1,11 @@
+package com.codingblocks.restapiretrofitjson.models
+
+/**
+ * Created by abheisenberg on 2/7/17.
+ */
+
+data class Album (
+        val userId: Int,
+        val id: Int,
+        val title: String
+)