Android 螢幕喚醒

Android 螢幕耗電, 擺低手機螢幕變暗,幷鎖定. 好似你唔惏野會放蚊咁.用『喚醒鎖』WakLock. 保持清醒『螢幕喚醒』.

1. 先係『xml』添加權限

<uses-permission android:name=”android.permission.WAKE_LOCK” />

2. 係『onCreate()』獲得電源管理『PowerManager』

PowerManager powerManager;

powerManager = (PowerManager)context.getSystemService(Context.POWER_SERVICE);

3. 生成『WakLock』喚醒鎖. 『FULL_WAKE_LOCK』螢幕保持著燈.CPU全速運行.

PowerManager.WakeLock wakeLock;

wakeLock = powerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, “WAKE LOCK”);

4. 係『onResume()』啟用『WakLock』喚醒鎖, 手機保持喚醒態,

wakeLock.acquire();

5. 係『onPause()』釋放喚醒鎖

wakeLock.release();

 

 

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);