android 屏保

屏蔽系统锁屏：

        KeyguardManager manager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE);          KeyguardManager.KeyguardLock lock = manager                  .newKeyguardLock("KeyguardLock");          lock.disableKeyguard();  

点亮屏幕：

                if(mWakeLock == null)                  {                          PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);                    mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.ON_AFTER_RELEASE, "SimpleTimer");                 mWakeLock.acquire();                   }

释放屏幕：

if(LockScreenService.mWakeLock != null)  {  LockScreenService.mWakeLock.release();  LockScreenService.mWakeLock = null;  }