获取手机电量

private IntentFilter mFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);public static final int MSG_BATT = 100;private Handler handler = new Handler() {@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);if (msg.what == MSG_BATT) {Intent intent = (Intent) msg.obj;int rawlevel = intent.getIntExtra("level", -1);// 获得当前电量int scale = intent.getIntExtra("scale", -1);//获得总电量System.out.println();}}};/** 检查电量 */public void checkPower(Context context) {context.registerReceiver(new BroadcastReceiver() {@Overridepublic void onReceive(Context context, Intent intent) {context.unregisterReceiver(this);handler.removeMessages(MSG_BATT);handler.obtainMessage(MSG_BATT, intent).sendToTarget();}}, mFilter);handler.sendEmptyMessageDelayed(MSG_BATT, 1000);}