Added basic support for App Shortcuts

Shuffle All, Top Tracks, and Last added. Still need to fix icons and add dynamic shortcuts for playlists

app/src/main/java/com/kabouzeid/gramophone/appshortcuts/AppShortcutLauncherActivity.java

@@ -0,0 +1,99 @@
+package com.kabouzeid.gramophone.appshortcuts;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.widget.Toast;
+
+import com.kabouzeid.gramophone.R;
+import com.kabouzeid.gramophone.loader.LastAddedLoader;
+import com.kabouzeid.gramophone.loader.SongLoader;
+import com.kabouzeid.gramophone.loader.TopAndRecentlyPlayedTracksLoader;
+import com.kabouzeid.gramophone.model.Song;
+import com.kabouzeid.gramophone.ui.activities.MainActivity;
+
+import java.util.ArrayList;
+
+/**
+ * @author Adrian Campos
+ */
+
+public class AppShortcutLauncherActivity extends Activity {
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        ShortcutType shortcutType = ShortcutType.NONE;
+
+        //Set shortcutType from the intent extras
+        Bundle extras = getIntent().getExtras();
+        if (extras!=null){
+            try {
+                shortcutType = ShortcutType.valueOf(extras.getString(getString(R.string.id_shortcuttype)));
+            } catch (IllegalArgumentException e){ //In the event we're somehow passed an invalid enum string, don't crash.
+                e.printStackTrace();
+                shortcutType = ShortcutType.NONE;
+            }
+        }
+
+        //Perform the action found in the extras
+        switch (shortcutType) {
+            case SHUFFLE_ALL:
+                launchMainActivityWithSongs(PlayMode.SHUFFLE,
+                        SongLoader.getAllSongs(getApplicationContext()));
+                break;
+            case TOP_TRACKS:
+                launchMainActivityWithSongs(PlayMode.NORMAL,
+                        TopAndRecentlyPlayedTracksLoader.getRecentlyPlayedTracks(getApplicationContext()));
+                break;
+            case LAST_ADDED:
+                launchMainActivityWithSongs(PlayMode.NORMAL,
+                        LastAddedLoader.getLastAddedSongs(getApplicationContext()));
+                break;
+            case NONE:
+                shortcutError();
+                break;
+            default:
+                shortcutError();
+                break;
+        }
+
+        finish();
+
+    }
+
+
+    enum PlayMode {NORMAL, SHUFFLE}
+    private void launchMainActivityWithSongs(PlayMode playMode, ArrayList<Song> songs){
+        //Create a new intent to launch MainActivity
+        Intent intent = new Intent(this, MainActivity.class);
+        switch (playMode){
+            case NORMAL:
+                intent.setAction(MainActivity.INTENT_ACTION_MEDIA_PLAY);
+                break;
+            case SHUFFLE:
+                intent.setAction(MainActivity.INTENT_ACTION_MEDIA_PLAY_SHUFFLED);
+                break;
+        }
+
+
+        //Create a bundle to store the songs to shuffle through songs
+        Bundle bundle = new Bundle();
+        bundle.putParcelableArrayList(MainActivity.INTENT_EXTRA_SONGS, songs);
+
+        //Put the bundle in the intent
+        intent.putExtras(bundle);
+
+        //Finally, start MainActivity with those extras
+        startActivity(intent);
+    }
+
+    private void shortcutError(){
+        Toast.makeText(getApplicationContext(), R.string.error_launching_shortcut, Toast.LENGTH_LONG).show();
+    }
+
+    public enum ShortcutType {
+        SHUFFLE_ALL, TOP_TRACKS, LAST_ADDED, NONE
+    }
+}

app/src/main/java/com/kabouzeid/gramophone/ui/activities/MainActivity.java

@@ -60,6 +60,12 @@ public class MainActivity extends AbsSlidingMusicPanelActivity {
     private static final int LIBRARY = 0;
     private static final int FOLDERS = 1;
 
+    public static final String PHONOGRAPH_PACKAGE_NAME = "com.kabouzeid.gramophone";
+    public static final String INTENT_ACTION_MEDIA_PLAY_SHUFFLED = PHONOGRAPH_PACKAGE_NAME + ".intent_action.play_shuffled";
+    public static final String INTENT_ACTION_MEDIA_PLAY = PHONOGRAPH_PACKAGE_NAME + ".intent_action.play";
+    public static final String INTENT_EXTRA_SONGS = PHONOGRAPH_PACKAGE_NAME + ".intent_extra.songs";
+
+
     @BindView(R.id.navigation_view)
     NavigationView navigationView;
     @BindView(R.id.drawer_layout)
@@ -296,6 +302,24 @@ public class MainActivity extends AbsSlidingMusicPanelActivity {
             } else {
                 MusicPlayerRemote.openQueue(songs, 0, true);
             }
+
+        } else if (intent.getAction() != null && intent.getAction().equals(MainActivity.INTENT_ACTION_MEDIA_PLAY_SHUFFLED)){
+            //Shuffle songs in extras
+            final ArrayList<Song> songs = intent.getExtras().getParcelableArrayList(INTENT_EXTRA_SONGS);
+
+            //Start the songs, setting the shuffle mode to shuffle
+            MusicPlayerRemote.openAndShuffleQueue(songs, true);
+
+        } else if (intent.getAction() != null && intent.getAction().equals(MainActivity.INTENT_ACTION_MEDIA_PLAY)){
+            //Shuffle songs in extras
+            final ArrayList<Song> songs = intent.getExtras().getParcelableArrayList(INTENT_EXTRA_SONGS);
+
+            //Start the songs, preserving the user's shuffle mode
+            if (MusicPlayerRemote.getShuffleMode() == MusicService.SHUFFLE_MODE_SHUFFLE) {
+                MusicPlayerRemote.openAndShuffleQueue(songs, true);
+            } else {
+                MusicPlayerRemote.openQueue(songs, 0, true);
+            }
         }
 
         if (uri != null && uri.toString().length() > 0) {