我使用RemoteViews时遇到了一些问题。我只想做一个显示电池电量的小部件。我已经完成了所有其他工作。
这是我的类：
public class BatteryLevel extends AppWidgetProvider{
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds){
context.startService(new Intent(context, BatteryMonitorReceiver.class));
}
public static class BatteryMonitorReceiver extends Service{
private int currentBatteryLevel = 0;
private BroadcastReceiver batteryReceiver = new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent){
currentBatteryLevel = intent.getIntExtra("level", 0);
}
};
@Override
public void onStart(Intent intent, int startId){
registerReceiver(this.batteryReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
RemoteViews updateViews = new RemoteViews(getPackageName(), R.layout.main);
updateViews.setTextViewText(R.id.level, String.valueOf(currentBatteryLevel));
ComponentName thisWidget = new ComponentName(this, BatteryLevel.class);
AppWidgetManager manager = AppWidgetManager.getInstance(this);
manager.updateAppWidget(thisWidget, updateViews);
}
@Override
public IBinder onBind(Intent intent){
return null;
}
}
}
当我启动应用程序时，没有错误，但是R.id.level也没有更新。
怎么办？
注意：API版本为7。