问题描述
我已经写了Andoid应用程序，使用硬件音量按钮用于其他用途。
I've written an Andoid app that uses the hardware Volume buttons for another purpose.
它工作正常，如果应用程序正在运行，可见，但是当我关闭屏幕或让它超时，按钮的点击不进入我的处理程序。
It works fine if the app is running and visible, but when I turn the screen off or let it time out, the button clicks don't get into my handlers.
有谁知道是否有一种方法来检测这些按钮的点击，当屏幕处于关闭状态？
Does anyone know if there is a way to detect these button clicks when the screen is off?
推荐答案
要保持检测这样的事情，当屏幕处于关闭状态的唯一方法是获得一个WakeLock，使屏幕关掉了，还是让你的应用程序功能。然而，这水渠电池寿命相当多，应该只使用在绝对必要的。
The only way to keep detecting things like this when the screen is off is to acquire a WakeLock that will allow the screen to turn off, and still let your app function. However, this drains the battery life quite a bit, and should only be used when absolutely necessary.
在这种情况下，您将需要一个 PARTIAL_WAKE_LOCK 。
In this case, you will need a PARTIAL_WAKE_LOCK.
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