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1) Create a Windows 8.1 Xamarin.Forms application with PCL-based code sharing strategy;
2) Implement the following scenario:
2.1) Use NavigationPage for navigation strategy;
2.2) Page A opens at startup;
2.3) Page A navigates to Page B using PushAsync();
2.4) Override OnBackButtonPressed() for Page B;
3) Use Back arrow, or hardware back (mouse with "Back" functionality) to navigate from Page B to Page A.
- Overriden OnBackButtonPressed() is fired when leaving Page B using "Back" functionality;
- Overriden OnBackButtonPressed() is not executed.
Xamarin.Forms version: 22.214.171.12447
target framework: portable45-net45+win8+wp8+wpa81
Thank you for taking the time to submit the bug. We tried to reproduce the issue you reported but were unable given the description. If you could please attach a reproduction to the bug by starting with a clean Xamarin.Forms project and adding just the code necessary to demonstrate the issue we would very much appreciate it.
And with a reminder OnBackButtonPressed is only called if you use the hardware button.
Xamarin Forms Team
Created attachment 13552 [details]
Sample project for Bug description
I'm attaching the sample project.
Sample project includes Windows 8.1 (WinRT) client and Windows Phone 8.1 (WinRT) client.
From Start Page (Page A) user navigates to Remote Page (Page B).
Remote Page does not have any back navigation, so user is forced to use "global back" mechanism.
In case of Windows Phone 8.1, "global back" is a hardware back button and OnBackButtonPressed() operation is called as expected.
In case of Windows 8.1, "global back" is represented in two ways:
A) The "Back" arrow at the top left side of the screen;
B) The global windows "Back" command, that can be invoked either from some keyboards (usually associated with "Back" for Browsers), or from PC mouse.
Despite the way user chooses to navigate from Remote Page to Start Page on Windows 8.1, the OnBackButtonPressed() operatio is NOT invoked.
The "Back" arrow may not be strictly fitting into hardware button definition, but it's the only option available to tablets/convertible notebook (e.g. Lenovo Yoga) users to navigate.
Hi, ok, i understand the problem, but OnBackButtonPressed will be only invoked on hardware buttons, so in this case the mouse back command.