Bug 41038 - MasterDetailPage loses menu icon on iOS after reusing NavigationPage as Detail
Summary: MasterDetailPage loses menu icon on iOS after reusing NavigationPage as Detail
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 2.3.0
Hardware: PC Windows
: Normal normal
Target Milestone: ---
Assignee: Rui Marinho
Depends on:
Reported: 2016-05-11 20:19 UTC by Brian Lagunas
Modified: 2018-02-12 18:32 UTC (History)
8 users (show)

Tags: ac
Is this bug a regression?: ---
Last known good build:

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Description Brian Lagunas 2016-05-11 20:19:01 UTC
Using a MatserDetailPage; when using a NavigationPage as the Detail, and reusing it instead of creating a new instance, the icon is lost on iOS.  To reproduce the issue run this application:

    public class App : Application
        public App()
            MainPage = new MainMasterDetailPage();

    public class MainMasterDetailPage : MasterDetailPage
        NavigationPage _navPage;

        public MainMasterDetailPage()
            Title = "Main";

            var btnViewA = new Button() { Text = "ViewA" };
            btnViewA.Clicked += Button_Clicked;

            var btnViewB = new Button() { Text = "ViewB" };
            btnViewB.Clicked += Button_Clicked;

            var stack = new StackLayout();

            var master = new ContentPage() { Title = "Master", Content = stack };

            _navPage = new NavigationPage(new ViewA());

            Master = master;
            Detail = _navPage;

        private async void Button_Clicked(object sender, EventArgs e)
            Page root = _navPage.Navigation.NavigationStack[0];

            await _navPage.Navigation.PopToRootAsync(false);

            Page newRoot = null;

            var btn = (Button)sender;
            if (btn.Text == "ViewA")
                newRoot = new ViewA();
                newRoot = new ViewB();

            await _navPage.Navigation.PushAsync(newRoot);


    public class ViewA : ContentPage
        public ViewA()
            Title = "ViewA";
            Content = new Label() { Text = "View A" };

    public class ViewB : ContentPage
        public ViewB()
            Title = "ViewB";
            Content = new Label() { Text = "View B" };
Comment 1 Rui Marinho 2016-06-16 16:26:44 UTC
Should be fixe in 2.3.1-pre1
Comment 2 Parmendra Kumar 2016-07-05 17:11:08 UTC
I have checked this issue with Xamarin.Forms 2.3.1-pre2 and its working fine.

Hence closing this issue.

Comment 3 Samantha Houts [MSFT] 2018-02-12 18:32:04 UTC
Migrated to https://github.com/xamarin/Xamarin.Forms/issues/1509.