在Windows手机中屏幕关闭时检测

Question

有没有办法检测Windows手机屏幕何时关闭？当这种情况发生时，可以使应用程序运行吗？

Answer 1

您应该将ApplicationIdleDecectionMode设置为Enabled并处理根框架的Obscured和Unobscured事件：

Microsoft.Phone.Shell.PhoneApplicationService.Current.ApplicationIdleDetectionMode = IdleDetectionMode.Enabled;
      var rootFrame = App.Current.RootVisual as PhoneApplicationFrame;
      if(rootFrame != null)
      {
        rootFrame.Obscured += new EventHandler<ObscuredEventArgs>(rootFrame_Obscured);
        rootFrame.Unobscured += new EventHandler(rootFrame_Unobscured);
      }

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