读取 android 设备的电池信息

读取 android 设备的电池信息：

public class Main extends Activity {

private TextView contentTxt;
private BroadcastReceiver mBatInfoReceiver = newBroadcastReceiver(){

@Override
public void onReceive(Context arg0, Intent intent) {
// TODO Auto-generated method stub
int level = intent.getIntExtra("level", 0);
contentTxt.setText(String.valueOf(level) + "%");
}
};

@Override
public void onCreate(Bundle) {
super.onCreate(icicle);
setContentView(R.layout.main);
contentTxt = (TextView) this.findViewById(R.id.monospaceTxt);
this.registerReceiver(this.mBatInfoReceiver,
new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}

}