MVVM Cross ShowViewModel doesn't work on UWP with custom

Question

I refer from this StackOverflow question, regarding to MVVM Light:

I am trying to have a hamburger menu style navigation (see this sample). app by Microsoft on an example of how to do this) to:

1- have a convenient solution shared across all my pages. The sample mentioned above uses an AppShell Page as the root of the app instead of a Frame, that encapsulates the navigation menu and some behavior of the back button. That would be ideal.

2- Use the MVVM-Light navigation service to handle all the navigation from my view model conveniently.

Here is how the App.xml.Cs initializes the shell page onLaunched:

 protected override void OnLaunched(LaunchActivatedEventArgs e)
    {
        var shell = Window.Current.Content as AppShell;

        // Do not repeat app initialization when the Window already has content,
        // just ensure that the window is active
        if (shell == null)
        {
            // Create a AppShell to act as the navigation context and navigate to the first page
            shell = new AppShell();

            // Set the default language
            shell.Language = ApplicationLanguages.Languages[0];

            shell.AppFrame.NavigationFailed += OnNavigationFailed;
        }

        // Place our app shell in the current Window
        Window.Current.Content = shell;

        if (shell.AppFrame.Content == null)
        {
            // When the navigation stack isn't restored, navigate to the first page
            // suppressing the initial entrance animation.
            var setup = new Setup(shell.AppFrame);
            setup.Initialize();

            var start = Mvx.Resolve<IMvxAppStart>();
            start.Start();
        }

        // Ensure the current window is active
        Window.Current.Activate();
    }

The thing is, as long as i navigate over the menu proviced by the AppShell everything works. But the ShowViewModel from MVVM Cross doesn't have any effect. I thought there shouldn't be any difference if pass the shell as Frame or the frame set on the AppShell. Does anyone have an idea what I can do about this or if there is an example with a working hamburger menu with MVVM cross?

The repository is open source on GitHub if you need an better overview or so.

https://github.com/Apply-Solutions/MoneyManager

I use MVVM Cross v4.0.0.0-beta1. Beta2 has currently another issue who prevents building in a UWP.

Thanks NPadrutt

Stephanvs Stephanvs · Accepted Answer · 2015-08-28T08:19:14

Not entirely sure what you are trying to do, but what you will probably need to navigate pages with a hamburger menu in a UWP app using MvvmCross as a framework, is a custom presenter, which handles the ShowViewModel method, and displays the associated view for the requested ViewModel in your hamburger container view.

MVVM Cross ShowViewModel doesn't work on UWP with custom

2 Answers