我开发一个应用程序的，我需要监视从服务剩余电量百分比。谁能告诉我该怎么办呢？我发现了一些样本$ C，它是从活动得到电池状态，而不是从服务$ CS。

I am developing an app for which I need to monitor the remaining battery percentage from a service. Can anybody tell me how to do it? I found some sample codes that are getting the battery status from an activity, not from service.

感谢。

推荐答案

使用ACTION_BATTERY_CHANGED。这就是所谓的每一次电池值的变化。请参阅下面的code，看看它是如何做的：

Use ACTION_BATTERY_CHANGED. It is called every time the battery value changes. See the code below to see how it is done:

public void onCreate()
{

this.registerReceiver(this.mBatInfoReceiver, 
        new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}

private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver(){
    @Override
    public void onReceive(Context arg0, Intent intent) {

    int level = intent.getIntExtra("level", 0);
    Log.e("test", String.valueOf(level) + "%");

     }
};


public void onDestroy(){

    // unregister receiver
    this.unregisterReceiver(this.mBatInfoReceiver);
}