如何的onReceive方法更新的TextView在控件提供者

Question

來源：

@Override 
public void onReceive(Context context, Intent intent) { 
    super.onReceive(context, intent); 
    String s = "MusicPlayer"; 
    if (MusicPlayerActivity.currentActivity != null) { 
     s = MusicPlayerActivity.currentActivity.getCurrentTrackName(); 
    } else { 
     Log.d(MusicPlayerActivity.TAG,"STARTING ACTIVITY FROM WIDGET"); 
     Intent intent1 = new Intent(context, MusicPlayerActivity.class); 
     intent1.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
     context.startActivity(intent1); 
    } 
    // I WANT TO UPDATE TEXT VIEW HERE 
    if (MusicPlayerActivity.currentActivity != null) 
     if (intent.getAction().equals(ACTION_WIDGET_NEXT)) { 
      MusicPlayerActivity.currentActivity.playNext(); 
     } else if (intent.getAction().equals(ACTION_WIDGET_PLAY)) { 
      MusicPlayerActivity.currentActivity.playPause(); 
     } else if (intent.getAction().equals(ACTION_WIDGET_PREV)) { 
      MusicPlayerActivity.currentActivity.playPrevious(); 
     } 
} 

我試過的東西與此代碼：

Log.d(MusicPlayerActivity.TAG,s); 
    remoteViews.setTextViewText(R.id.w_trackInfo, s); 
appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetIds, R.id.w_trackInfo); 

但如果我把它放在評論位置，這並不工作。任何幫助讚賞。

Answer 1

找到解決方案只需添加這對評論的地方：

RemoteViews views = new RemoteViews(context.getPackageName(), 
      R.layout.widget_layout); 
    views.setTextViewText(R.id.w_trackInfo, s); 
    AppWidgetManager.getInstance(context).updateAppWidget(
      new ComponentName(context, MusicWidgetProvider.class),views);