I have 2 pages in my Windows Phone 8.1 Universal App.
I navigate from Page1.xaml to Page2.xaml by using a button with the click event code:
this.Frame.Navigate(typeof(Page2));
When I am on Page2, and I use the hardware back button the app closes without an exception or anything. It just returns to the startscreen.
I already tried the following on Page 2:
public Page2()
{
this.InitializeComponent();
Windows.Phone.UI.Input.HardwareButtons.BackPressed += HardwareButtons_BackPressed;
}
void HardwareButtons_BackPressed(object sender, Windows.Phone.UI.Input.BackPressedEventArgs e)
{
Frame.GoBack();
}
As far as I know I do not clear the back stack.
What is going on, and how can I fix this?
Kind regards, Niels
This is new to Windows Phone 8.1.
If you create a new Hub Universal App using a VS2013 template, you'll notice a class in Common folder called a NavigationHelper.
This NavigationHelper gives you a hint how to properly react to back button press. So, if you don't want to use the NavigationHelper, here's how to get the old behavior back:
public BlankPage1()
{
this.InitializeComponent();
HardwareButtons.BackPressed += HardwareButtons_BackPressed;
}
void HardwareButtons_BackPressed(object sender, BackPressedEventArgs e)
{
if (Frame.CanGoBack)
{
e.Handled = true;
Frame.GoBack();
}
}
You can also do it on app level, to avoid having to do it on every page:
public App()
{
this.InitializeComponent();
this.Suspending += this.OnSuspending;
#if WINDOWS_PHONE_APP
HardwareButtons.BackPressed += HardwareButtons_BackPressed;
#endif
}
#if WINDOWS_PHONE_APP
void HardwareButtons_BackPressed(object sender, BackPressedEventArgs e)
{
Frame rootFrame = Window.Current.Content as Frame;
if (rootFrame != null && rootFrame.CanGoBack)
{
e.Handled = true;
rootFrame.GoBack();
}
}
#endif