New Drawables and widget alpha

app/src/main/java/com/kabouzeid/gramophone/widget/MusicPlayerWidget.java

@@ -0,0 +1,104 @@
+package com.kabouzeid.gramophone.widget;
+
+import android.app.PendingIntent;
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProvider;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.net.Uri;
+import android.widget.RemoteViews;
+
+import com.kabouzeid.gramophone.App;
+import com.kabouzeid.gramophone.R;
+import com.kabouzeid.gramophone.model.Song;
+import com.kabouzeid.gramophone.service.MusicService;
+import com.kabouzeid.gramophone.ui.activities.MusicControllerActivity;
+import com.kabouzeid.gramophone.util.MusicUtil;
+import com.nostra13.universalimageloader.core.ImageLoader;
+
+/**
+ * Implementation of App Widget functionality.
+ */
+public class MusicPlayerWidget extends AppWidgetProvider {
+    private static MusicPlayerWidget instance;
+
+    public static synchronized MusicPlayerWidget getInstance() {
+        if (instance == null) {
+            instance = new MusicPlayerWidget();
+        }
+        return instance;
+    }
+
+    @Override
+    public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
+        RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.music_player_widget);
+
+        appWidgetManager.updateAppWidget(appWidgetIds, views);
+    }
+
+
+    @Override
+    public void onEnabled(Context context) {
+        // Enter relevant functionality for when the first widget is created
+    }
+
+    @Override
+    public void onDisabled(Context context) {
+        // Enter relevant functionality for when the last widget is disabled
+    }
+
+    private void linkButtons(final Context context, final RemoteViews views) {
+        views.setOnClickPendingIntent(R.id.album_art, retrievePlaybackActions(context, 0));
+        views.setOnClickPendingIntent(R.id.button_toggle_play_pause, retrievePlaybackActions(context, 1));
+        views.setOnClickPendingIntent(R.id.button_next, retrievePlaybackActions(context, 2));
+        views.setOnClickPendingIntent(R.id.button_prev, retrievePlaybackActions(context, 3));
+    }
+
+    private PendingIntent retrievePlaybackActions(final Context context, final int which) {
+        Intent action;
+        PendingIntent pendingIntent;
+        final ComponentName serviceName = new ComponentName(context, MusicService.class);
+        switch (which) {
+            case 0:
+                action = new Intent(context, MusicControllerActivity.class);
+                pendingIntent = PendingIntent.getActivity(context, 0, action, 0);
+                return pendingIntent;
+            case 1:
+                action = new Intent(MusicService.ACTION_TOGGLE_PLAYBACK);
+                action.setComponent(serviceName);
+                pendingIntent = PendingIntent.getService(context, 1, action, 0);
+                return pendingIntent;
+            case 2:
+                action = new Intent(MusicService.ACTION_SKIP);
+                action.setComponent(serviceName);
+                pendingIntent = PendingIntent.getService(context, 2, action, 0);
+                return pendingIntent;
+            case 3:
+                action = new Intent(MusicService.ACTION_REWIND);
+                action.setComponent(serviceName);
+                pendingIntent = PendingIntent.getService(context, 3, action, 0);
+                return pendingIntent;
+        }
+        return null;
+    }
+
+    public void performUpdate(final  MusicService service, final Song song){
+        final RemoteViews views = new RemoteViews(service.getPackageName(), R.layout.music_player_widget);
+        linkButtons(service, views);
+        loadAlbumArt(views, MusicUtil.getAlbumArtUri(song.albumId).toString());
+        views.setTextViewText(R.id.song_title, song.title);
+    }
+
+    private static void loadAlbumArt(RemoteViews widgetView, String albumArtUri) {
+        Bitmap albumArtBitmap = ImageLoader.getInstance().loadImageSync(albumArtUri);
+        if (albumArtBitmap == null) {
+            widgetView.setImageViewResource(R.id.album_art, R.drawable.default_album_art);
+        } else {
+            widgetView.setImageViewBitmap(R.id.album_art, albumArtBitmap);
+        }
+    }
+}
+
+