当设备的电池电量低时,我想关闭我的应用程序.
我在清单中添加了以下代码.
我在清单中添加了以下代码.
<receiver android:name=".BatteryLevelReceiver"
<intent-filter>
<action android:name="android.intent.action.ACTION_BATTERY_LOW" />
<action android:name="android.intent.action.ACTION_BATTERY_OKAY" />
</intent-filter>
</receiver>
和接收器中的以下代码
public class BatteryLevelReceiver extends BroadcastReceiver
{
@Override
public void onReceive(Context context,Intent intent)
{
Toast.makeText(context,"BAttery's dying!!",Toast.LENGTH_LONG).show();
Log.e("","BATTERY LOW!!");
}
}
我正在运行emulater上的应用程序,并使用telnet更改电池电量.
它会更改电池电量,但不显示任何吐司或日志.
我还缺少什么？
任何帮助是赞赏！
谢谢.
解决方法
在代码中注册您的接收器,而不是在AndroidManifest文件中.
registerReceiver(batteryChangeReceiver,new IntentFilter(
Intent.ACTION_BATTERY_CHANGED)); // register in activity or service
public class BatteryChangeReceiver extends BroadcastReceiver {
int scale = -1;
int level = -1;
int voltage = -1;
int temp = -1;
@Override
public void onReceive(Context context,Intent intent) {
level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL,-1);
scale = intent.getIntExtra(BatteryManager.EXTRA_SCALE,-1);
temp = intent.getIntExtra(BatteryManager.EXTRA_TEMPERATURE,-1);
voltage = intent.getIntExtra(BatteryManager.EXTRA_VOLTAGE,-1);
}
}
unregisterReceiver(batteryChangeReceiver);//unregister in the activity or service
或者用空接收器收听电池电量.
Intent BATTERYintent = this.registerReceiver(null,new IntentFilter(
Intent.ACTION_BATTERY_CHANGED));
int level = BATTERYintent.getIntExtra(BatteryManager.EXTRA_LEVEL,-1);
Log.v(null,"LEVEL" + level);
