如何显示，屏幕被锁定？ [英] How to reveal that screen is locked?

问题描述

在我的应用程序需要知道的设备已被锁定（在HTC的它看起来像电源按钮，短preSS）。所以，问题是：哪个事件时，设备锁定被触发？或设备要睡觉？

In my application I need to know when device is locked (on HTC's it looks like short press on "power" button). So the question is: which event is triggered when device is locked? Or device is going to sleep?

推荐答案

您应该延长的BroadcastReceiver 和实施的onReceive ，像这样的：

You should extend BroadcastReceiver and implement onReceive, like this:

public class YourBroadcastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (Intent.ACTION_SCREEN_OFF.equalsIgnoreCase(intent.getAction())) {
            //screen has been switched off!
        }
    }
}

然后你只需要注册它，你就会开始接收事件，当屏幕被关闭：

Then you just have to register it and you'll start receiving events when the screen is switched off:

IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
appBroadcastReceiver = new AppBroadcastReceiver(yourActivity);
registerReceiver(appBroadcastReceiver, filter);

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