我是android和java开发的新手。目前，我有一个小任务，将电池信息通知为小部件。
我四处搜索并找到了一段用于从电池中检索信息的源代码（http://www.tutorialforandroid.com/2009/01/getting-battery-information-on-android.html）。我试图将其调整为小部件，但我遇到了关于BroadcastReceiver的问题。我试图将电池电量的值从 BroadcastReceiver 传递给 RemoteViews。我为 BroadcastReceiver 对象找到了 getResultData() 方法，但我总是得到 Null 值。
因此，我想建议将此 BroadcastReceiver 值传递给 RemoteViews。
为了更清楚，我在这里添加了一段代码。
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);
}
}