android 解锁 点亮屏幕

 
//保持屏幕常亮 
PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE); 
mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP, LOCK_TAG); 

mWakeLock.acquire(); 

 
//释放屏幕常亮锁 
if(null != mWakeLock) { 
    mWakeLock.release(); 
} 

 
//屏幕解锁 
KeyguardManager keyguardManager = (KeyguardManager)getSystemService(KEYGUARD_SERVICE); 
KeyguardLock keyguardLock = keyguardManager.newKeyguardLock(LOCK_TAG); 
keyguardLock.disableKeyguard(); 
//屏幕锁定 
keyguardLock.reenableKeyguard(); 

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

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原文：http://blog.csdn.net/lian_1988/article/details/38270993