android 唤醒屏幕

一）AndroidManifest.xml 加权限

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

二）声明 WakeLock 对象

	private WakeLock mWakeLock;
public void onCreate() {
super.onCreate();
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);            
mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK                    
| PowerManager.ACQUIRE_CAUSES_WAKEUP                    
| PowerManager.ON_AFTER_RELEASE, TAG);
if (D) Log.e(TAG, TAG + " created.");
}

三）唤醒屏幕

mWakeLock.acquire(5000);