Win10 恢复后退键

转自:http://www.cnblogs.com/liubaicai/p/4368261.html

自带的几种风格的页面,竟然是用的左上角虚拟后退键,这种倒行逆施的行为微软你真是够了!

一定要把后退功能找回来!!

于是就用到了扩展api:

1.Add References

2.选择 Universal App Platform – Extensions

3.勾选Windows Mobile Extension SDK

4.愉快的使用 Windows.Phone.UI.Input.HardwareButtons.BackPressed += HardwareButtons_BackPressed;

这句代码放到win10桌面里运行是会crash的,因为桌面版里没有此API,所以需要用

Windows.Foundation.Metadata.ApiInformation.IsTypePresent(“Windows.Phone.UI.Input.HardwareButtons”)

运行时判断是否有该API的支持。

于是,最后的代码可能是这样:



if (Windows.Foundation.Metadata.ApiInformation.IsTypePresent("Windows.Phone.UI.Input.HardwareButtons"))

        {

       //http://www.liubaicai.net/archives/444

            Windows.Phone.UI.Input.HardwareButtons.BackPressed -= HardwareButtons_BackPressed;

            Windows.Phone.UI.Input.HardwareButtons.BackPressed += HardwareButtons_BackPressed;

        }





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private void HardwareButtons_BackPressed(object sender, Windows.Phone.UI.Input.BackPressedEventArgs e)

{

   //http://www.liubaicai.net/archives/444

    e.Handled = true;

    Frame rootFrame = Window.Current.Content as Frame;

    if (rootFrame.CanGoBack)

        rootFrame.GoBack();

    else

        Application.Current.Exit();

} 
原文地址:https://www.cnblogs.com/ggzone/p/10121288.html