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我是android和java開發的新手。目前,我得到一個小任務通知電池信息作爲部件。Android BroadcastReceiver,getResultData()總是返回null
我曾經搜索過,發現了一段從電池中檢索信息的源代碼(http://www.tutorialforandroid.com/2009/01/getting-battery-information-on-android.html)。我試圖調整它的部件,但我有一個問題,關於BroadcastReceiver。 我試圖將電池電量值從BroadcastReceiver傳遞到RemoteViews。我找到了BroadcastReceiver對象的getResultData()方法,但我總是得到它的空值。
因此,我想建議將此BroadcastReceiver值傳遞給RemoteViews。
爲了使它更清晰,我在這裏添加了一段代碼。
public class MyBattery extends TimerTask {
RemoteViews remoteViews;
AppWidgetManager appWidgetmanager;
ComponentName thisWidget;
TextView contentTxt;
Context context;
public MyBattery(Context context, AppWidgetManager appWidgetManager){
this.appWidgetmanager = appWidgetManager;
remoteViews = new RemoteViews(context.getPackageName(),R.layout.main);
thisWidget = new ComponentName(context,widgetTest.class);
this.context = context;
}
private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver(){
@Override
public void onReceive(Context arg0, Intent intent){
int level = intent.getIntExtra("level", 0);
contentTxt.setText(String.valueOf(level)+"%");
this.setResultData(String.valueOf(level)+"%");
}
};
@Override
public void run() {
remoteViews.setTextViewText(R.id.battery_label,""+ this.mBatInfoReceiver.getResultData());
appWidgetmanager.updateAppWidget(thisWidget, remoteViews);
}
}
感謝您的快速回復,但使用廣播接收器與活動這裏的例子。對我來說,我嘗試使用它的小部件。 – Fon
我現在想通了。非常感謝! – Fon