如何在窗口小部件提供程序的onReceive方法中更新TextView

Question

資源：

@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();
        }
}

我嘗試了以下代碼：

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

但是，如果我將其置於評論位置，則無法使用。 任何幫助表示贊賞。

Answer 1

找到的解決方案只需在評論處添加：

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);