vb.net - Back button on WP8.1

Question

I try to add code to Hardware Back Button on WP8.1

Private Sub onBackPressed(sender As Object, e As BackPressedEventArgs)

    some code

End Sub

But when I press Back - my app just closes. onBackPressed event is not happening at all, how can I fixed it?

Answer 1

你报名参加那个活动了吗？您需要先自己添加

HardwareButtons.BackPressed += HardwareButtons_BackPressed; （对不起c#）

cfr http://invokeit.wordpress.com/2014/04/14/backbutton-handling-with-winprt-and-windows-phone-8-1-wpdev/

Answer 2

我知道对于 C# 来说很容易。将此添加到构造函数中：

HardwareButtons.BackPressed += this.Hardware_BackButton_Pressed;

并使用：

    public void Hardware_BackButton_Pressed(object sender, BackPressedEventArgs e)
    {
        // do things here..
    }