Xamarin.Forms Prism app not showing Master-Detail navigation bar - xamarin

Question

I am trying to get Master-Detail navigation configured in my Xamarin.Forms app with my UWP target running on Windows 10.
When I run the sample Master-Detail app provided by Xamarin (following https://developer.xamarin.com/guides/xamarin-forms/user-interface/navigation/master-detail-page/), and change the MasterBehavior to Popover, I see the following behavior:
Startup:
Select the hamburger icon:
Make a selection:
In my prism app, I navigate to MainPage/View1:
protected override void OnInitialized()
{
InitializeComponent();
var task = NavigationService.NavigateAsync("MainPage/View1");
...
}
MainPage is my MasterDetailPage with the MasterBehavior set to Popover, and View1 is a ContentPage.
MainPage:
<MasterDetailPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:views="clr-namespace:My.Mobile.Application.Views;assembly=My.Mobile.Application"
x:Class="My.Mobile.Application.Frame.MainPage"
MasterBehavior="Popover">
<MasterDetailPage.Master>
<views:MasterPage x:Name="masterPage" />
</MasterDetailPage.Master>
<MasterDetailPage.Detail>
<NavigationPage>
<x:Arguments>
<views:View1 />
</x:Arguments>
</NavigationPage>
</MasterDetailPage.Detail>
</MasterDetailPage>
View1:
public View1()
{
NavigationPage.SetHasNavigationBar(this,false);
InitializeComponent();
}
On startup, I do not see any navigation bar, just the contents of View1 (currently just a red screen):
If I change the MasterBehavior of MainPage.xaml to Default instead of Popover, and remove the SetHasNavigationBar in View1, I see the side menu when the app launches:
MainPage:
<MasterDetailPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:views="clr-namespace:My.Mobile.Application.Views;assembly=My.Mobile.Application"
x:Class="My.Mobile.Application.Frame.MainPage"
MasterBehavior="Default">
<MasterDetailPage.Master>
<views:MasterPage x:Name="masterPage" />
</MasterDetailPage.Master>
<MasterDetailPage.Detail>
<NavigationPage>
<x:Arguments>
<views:View1 />
</x:Arguments>
</NavigationPage>
</MasterDetailPage.Detail>
</MasterDetailPage>
View1:
public View1()
{
//NavigationPage.SetHasNavigationBar(this,false);
InitializeComponent();
}
When I make a selection after startup with MasterBehavior set to Default, I now see the hamburger menu.
Is there anything that I can add or verify in my solution to mimic the Xamarin sample behavior with the MasterBehavior set to Popup?

Answer 1

The problem is here: var task = NavigationService.NavigateAsync("MainPage/View1");
Since you want to show the hamburger menu, you need to wrap your Detail in a NavigationPage. So first register a NavigationPage for navigation
Container.RegisterTypeForNavigation<NavigationPage>();
Then add it to your navigation path:
var task = NavigationService.NavigateAsync("MainPage/NavigationPage/View1");
Also, you can remove a the detail markup in your MasterPage XAML because the navigation service will build it up for you.

Answer 2

Try to do something like this:
public partial class ShellView : MasterDetailPage, IMasterDetailPageOptions
{
public ShellView()
{
InitializeComponent();
}
public bool IsPresentedAfterNavigation
{
get { return Device.Idiom != TargetIdiom.Phone; }
}
}