打开
mWakeLock = ((PowerManager)mContext.getSystemService(Context.POWER_SERVICE))
.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK | PowerManager.ON_AFTER_RELEASE, "SystemSet");
mWakeLock.acquire();
关闭
if (null != mWakeLock && mWakeLock.isHeld()) {
mWakeLock.release();
mWakeLock = null;
}