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    copied!<pre><code>public class WidgetProvider extends AppWidgetProvider { //action for buttons public static final String ACTION_WIDGET_PLAY_PAUSE = "btn_play_pause"; public static final String ACTION_WIDGET_STOP = "btn_stop"; public static final String ACTION_WIDGET_PREV_TRACK = "btn_prev_track"; public static final String ACTION_WIDGET_NEXT_TRACK = "btn_next_track"; public static final String ACTION_WIDGET_MUTE = "btn_mute"; public static final String ACTION_WIDGET_VOL_UP = "btn_vol_up"; public static final String ACTION_WIDGET_VOL_DOWN = "btn_vol_down"; public static final String ACTION_WIDGET_EXPAND_WIDGET = "btn_transparent_activity"; // &lt;Action, ButtonId&gt; private static final HashMap&lt;String, Integer&gt; CLICK_INTENT_ACTIONS_MAP = new HashMap&lt;String, Integer&gt;(); // &lt;Actions&gt; private static final ArrayList&lt;String&gt; ACTIONS = new ArrayList&lt;String&gt;(); static { CLICK_INTENT_ACTIONS_MAP.put(ACTION_WIDGET_PLAY_PAUSE, R.id.btn_media_play_pause); CLICK_INTENT_ACTIONS_MAP.put(ACTION_WIDGET_STOP, R.id.btn_media_stop); CLICK_INTENT_ACTIONS_MAP.put(ACTION_WIDGET_PREV_TRACK, R.id.btn_media_previous); CLICK_INTENT_ACTIONS_MAP.put(ACTION_WIDGET_NEXT_TRACK, R.id.btn_media_next); CLICK_INTENT_ACTIONS_MAP.put(ACTION_WIDGET_MUTE, R.id.btn_media_mute); CLICK_INTENT_ACTIONS_MAP.put(ACTION_WIDGET_VOL_UP, R.id.btn_media_vol_up); CLICK_INTENT_ACTIONS_MAP.put(ACTION_WIDGET_VOL_DOWN, R.id.btn_media_vol_down); CLICK_INTENT_ACTIONS_MAP.put(ACTION_WIDGET_EXPAND_WIDGET, R.id.btn_show_activity); // Fill action list ACTIONS.addAll(CLICK_INTENT_ACTIONS_MAP.keySet()); } @Override public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout); Intent activeIntent; PendingIntent actionPendingIntent; int mapSize = CLICK_INTENT_ACTIONS_MAP.size(); // Fill btn id list ArrayList&lt;Integer&gt; btnIds = new ArrayList&lt;Integer&gt;(); btnIds.addAll(CLICK_INTENT_ACTIONS_MAP.values()); // Set button listeners for (int i = 0; i &lt; mapSize; i++) { activeIntent = new Intent(context, WidgetProvider.class); activeIntent.setAction(ACTIONS.get(i)); actionPendingIntent = PendingIntent.getBroadcast(context, 0, activeIntent, 0); remoteViews.setOnClickPendingIntent(btnIds.get(i), actionPendingIntent); } //Update appWidgetManager.updateAppWidget(appWidgetIds, remoteViews); context.startService(new Intent(context.getApplicationContext(), AppControllerService.class)); } @Override public void onReceive(Context context, Intent intent) { final String action = intent.getAction(); if (ACTIONS.contains(action)) { int btnId = CLICK_INTENT_ACTIONS_MAP.get(action); switch (btnId) { case R.id.btn_media_play_pause: case R.id.btn_media_stop: case R.id.btn_media_previous: case R.id.btn_media_next: case R.id.btn_media_mute: case R.id.btn_media_vol_up: case R.id.btn_media_vol_down: break; case R.id.btn_show_activity: Intent i = new Intent(context, ActivityMain.class); i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); context.startActivity(i); break; default: break; } } super.onReceive(context, intent); } @Override public void onDeleted(Context context, int[] appWidgetIds) { super.onDeleted(context, appWidgetIds); } @Override public void onEnabled(Context context) { super.onEnabled(context); } @Override public void onDisabled(Context context) { super.onDisabled(context); } </code></pre> <p>}</p>
 

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