至于屏幕的亮度sdk中也没有说明白到底有多亮,
public void acquire () //该方法只是确保屏幕会被唤醒
Makes sure the device is on at the level you asked when you created the wake lock.
public void acquire (long timeout) //参数表示唤醒的时间,时间过后,会自动释放该锁
Makes sure the device is on at the level you asked when you created the wake lock. The lock will be released after the given timeout.