No way to create extended spalsh screen?

[Dedecekhribecek]

In old T10 version there was a way to create extended splash screen in app constructor SplashFactory = (e) => new Views.Splash(e); There is solution to override OnLaunched method in standard UWP App. Unfortunate this method is sealed in Template 10.
I did not find any description ow web. Please will you point me out where is some docs describing my problem. Thanks in advance.

[JerryNixon]

I believe the smartest thing you can do is to wait to set the Window.Content. That being said, extended splash screen hasn't been on my radar. Thanks for the tip. I will look into building a sample here in a bit. If there is something fundamentally missing in this updated Template10, I'll fix it.

[JerryNixon]

This works flawlessly.

public override async Task OnStartAsync(IStartArgs args)
{
    if (args.StartKind == StartKinds.Launch)
    {
        ShowExtendedSplashScreen();
        PreloadData();
        await NavigateToStart();
    }
    else { Debugger.Break(); }

    void ShowExtendedSplashScreen()
    {
        if (args.Arguments is IActivatedEventArgs act)
        {
            Window.Current.Content = new ExtendedSplash(act.SplashScreen);
        }
    }

    void PreloadData()
    {
        // TODO
    }

    async Task NavigateToStart()
    {
        var navigation = Container.Resolve<Services.NavigationService>();
        Window.Current.Content = new ShellPage(navigation.Service.GetXamlFrame());
        await navigation.Service.NavigateAsync(nameof(MainPage));
    }
}

With this ExSplash logic.

public ExtendedSplash(Windows.ApplicationModel.Activation.SplashScreen splashScreen)
{
    InitializeComponent();
    Window.Current.SizeChanged += (s, e) => Resize(splashScreen);
    SplashImage.ImageOpened += (s, e) => Window.Current.Activate();
    Resize(splashScreen);
}

private void Resize(SplashScreen splashScreen)
{
    SplashImage.Height = splashScreen.ImageLocation.Height;
    SplashImage.Width = splashScreen.ImageLocation.Width;
    SplashContainer.SetValue(Canvas.TopProperty, splashScreen.ImageLocation.Top);
    SplashContainer.SetValue(Canvas.LeftProperty, splashScreen.ImageLocation.Left);
}

I'll keep it on the backlog to remove Window.Current.Activate() from the bootstrapper, but I've been testing it locally and this works like a charm. Let me know your experience.

[Dedecekhribecek]

Thank you for hint.