Question

我的应用使用振动设备的计时器。现在我想在收到呼叫时停止此计时器，否则设备在通话期间继续振动，并在通话结束时再次启动。我试图处理隐藏和未遮挡的事件

PhoneApplicationFrame rootFrame = App.Current.RootVisual as PhoneApplicationFrame;

if (rootFrame != null)
{
    rootFrame.Obscured += new EventHandler<ObscuredEventArgs>(rootFrame_Obscured);
    rootFrame.Unobscured += new EventHandler(rootFrame_Unobscured);
}

但这不起作用。收到电话时没有发生这些事件。我应该怎么处理这个？

Answer 1

在App.xaml.cs中，有两种方法，如下所示。第一个是在导航到应用程序时触发，第二个是在您从应用程序导航时触发的（例如，当您接到呼叫时）。

// Code to execute when the application is activated (brought to foreground)
// This code will not execute when the application is first launched
private void Application_Activated(object sender, ActivatedEventArgs e)
{
    //start timer here
}

// Code to execute when the application is deactivated (sent to background)
// This code will not execute when the application is closing
private void Application_Deactivated(object sender, DeactivatedEventArgs e)
{
    //stop timer here      
}

如何处理Windows Phone 8应用程序中的调用

1 个答案: