1、編寫broadcastreceiver

    class BatteryReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            int level = intent.getIntExtra("level", 0);//0~100;
            setBattery(level);
        }
    }

2、定義及繫結

private BatteryReceiver mBatteryReceiver;




        //註冊電量廣播
 

        mBatteryReceiver = new BatteryReceiver();
        IntentFilter intentFilter = new IntentFilter();
        intentFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
        registerReceiver(mBatteryReceiver, intentFilter);

3、自定義設定電池狀態

    private void setBattery(int level) {
        if (level <= 0
 
) {
            mMediaImBattery.setImageResource(R.drawable.ic_battery_0);
        } else if (level <= 10) {
            mMediaImBattery.setImageResource(R.drawable.ic_battery_10);
        } else if (level <= 20) {
            mMediaImBattery.setImageResource(R.drawable.ic_battery_20);
        } else if (level <= 40
 
) {
            mMediaImBattery.setImageResource(R.drawable.ic_battery_40);
        } else if (level <= 60) {
            mMediaImBattery.setImageResource(R.drawable.ic_battery_60);
        } else if (level <= 80) {
            mMediaImBattery.setImageResource(R.drawable.ic_battery_80);
        } else if (level <= 100) {
            mMediaImBattery.setImageResource(R.drawable.ic_battery_100);
        } else {
            mMediaImBattery.setImageResource(R.drawable.ic_battery_100);
        }
    }

//我寫的是圖片顯示電量
//當然，只要大家拿到了電量，即可自定義

//別忘了呼叫這個函式

4、別忘了銷燬廣播接收者

    @Override
    protected void onDestroy() {
        super.onDestroy();
        //登出電量監聽者
        if (mBatteryReceiver != null) {
            unregisterReceiver(mBatteryReceiver);
            mBatteryReceiver = null;
        }
    }

這樣，就設定成功了