Bug 20660 - PopToRootAsync crashes on Android even though it's being invoked on a NavigationPage
Summary: PopToRootAsync crashes on Android even though it's being invoked on a Navigat...
Status: VERIFIED FIXED
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 1.0.6188
Hardware: PC All
: Normal major
Target Milestone: ---
Assignee: Bugzilla
URL: https://github.com/xamarin/Duplo/issu...
Depends on:
Blocks:
 
Reported: 2014-06-17 13:20 UTC by Chase Florell
Modified: 2015-01-19 09:52 UTC (History)
7 users (show)

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


Attachments
Repro Example (103 bytes, text/plain)
2014-06-17 13:22 UTC, Chase Florell
Details


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Status:
VERIFIED FIXED

Description Chase Florell 2014-06-17 13:20:47 UTC
##Steps to Reproduce.##

 1. create new app
 2. edit App.cs

    public class App
    {
        public static INavigation Navigation { get; private set; }

        public static Page GetMainPage()
        {
             var rootPage = new NavigationPage(new RootPage());
            Navigation = rootPage.Navigation;
            return rootPage;
        }
    }

3. Create pages

    public class RootPage : ContentPage
    {
        public RootPage()
        {
            var btn = new Button
            {
                Text = "Go To Page 1"
            };
            btn.Clicked += async (sender, args) => await App.Navigation.PushAsync(new Page1());

            Content = btn;
        }
    }

    public class Page1 : ContentPage
    {
        public Page1()
        {
            var btn = new Button
            {
                Text = "Go To Page 2"
            };
            btn.Clicked += async (sender, args) => await App.Navigation.PushAsync(new Page2());

            Content = btn;
        }
    }

    public class Page2 : ContentPage
    {
        public Page2()
        {
            var btn = new Button
            {
                Text = "Go To Root"
            };
            btn.Clicked += async (sender, args) => await App.Navigation.PopToRootAsync();

            Content = btn;
        }
    }

 4. Run the app and press the button all the way to "Go To Root"

##RESULT##

Crash with error "PopToRootAsync is not supported globally on Android, please use a NavigationPage." 

[Forum Post Here](http://forums.xamarin.com/discussion/18091/poptorootasync-is-not-supported-globally-on-android-please-use-a-navigationpage)
Comment 1 Chase Florell 2014-06-17 13:22:15 UTC
Created attachment 7095 [details]
Repro Example

I posted the REPRO in the Forum.
Comment 2 Jason Smith [MSFT] 2014-07-14 13:20:10 UTC
Thank you
Comment 3 Eric Maupin 2014-07-17 13:30:17 UTC
Made public at the request of the user.
Comment 4 Chris Riesgo 2014-07-23 11:29:08 UTC
For the sake of being thorough, I made a full XF example. I get the PopToRootAsync error on iOS and Android.

https://github.com/chrisriesgo/repro/tree/master/XF_PopToRootAsync
Comment 5 Parmendra Kumar 2014-08-14 06:48:13 UTC
I have checked this issue and able to reproduce this, To reproduce this issue I
have followed the steps mentioned in bug description. 

Screencast: http://www.screencast.com/t/D63atoUx0

ZipXamarin Log: https://gist.github.com/Parmendrak/9625eeb9c4a5b8e0dd71

Environment:

Microsoft Visual Studio Professional 2013
Version 12.0.30723.00 Update 3
Microsoft .NET Framework
Version 4.5.51641

Installed Version: Professional

LightSwitch for Visual Studio 2013   06177-004-0444002-02685
Microsoft LightSwitch for Visual Studio 2013

Team Explorer for Visual Studio 2013   06177-004-0444002-02685
Microsoft Team Explorer for Visual Studio 2013

Visual Basic 2013   06177-004-0444002-02685
Microsoft Visual Basic 2013

Visual C# 2013   06177-004-0444002-02685
Microsoft Visual C# 2013

Visual C++ 2013   06177-004-0444002-02685
Microsoft Visual C++ 2013

Visual F# 2013   06177-004-0444002-02685
Microsoft Visual F# 2013

Visual Studio 2013 Code Analysis Spell Checker   06177-004-0444002-02685
Microsoft® Visual Studio® 2013 Code Analysis Spell Checker

Portions of International CorrectSpell™ spelling correction system © 1993 by Lernout & Hauspie Speech Products N.V. All rights reserved.

The American Heritage® Dictionary of the English Language, Third Edition Copyright © 1992 Houghton Mifflin Company. Electronic version licensed from Lernout & Hauspie Speech Products N.V. All rights reserved.

Windows Phone SDK 8.0 - ENU   06177-004-0444002-02685
Windows Phone SDK 8.0 - ENU

Application Insights Tools for Visual Studio Package   1.0
Application Insights Tools for Visual Studio

ASP.NET and Web Tools   12.3.50717.0
Microsoft Web Developer Tools contains the following components:
Support for creating and opening ASP.NET web projects
Browser Link: A communication channel between Visual Studio and browsers
Editor extensions for HTML, CSS, and JavaScript
Page Inspector: Inspection tool for ASP.NET web projects
Scaffolding: A framework for building and running code generators
Server Explorer extensions for Microsoft Azure Websites
Web publishing: Extensions for publishing ASP.NET web projects to hosting providers, on-premises servers, or Microsoft Azure

ASP.NET Web Frameworks and Tools 2012.2   4.1.21001.0
For additional information, visit http://go.microsoft.com/fwlink/?LinkID=309563

ASP.NET Web Frameworks and Tools 2013   5.2.20703.0
For additional information, visit http://www.asp.net/

Common Azure Tools   1.2
Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.

Microsoft Azure Mobile Services Tools   1.2
Microsoft Azure Mobile Services Tools

NuGet Package Manager   2.8.50313.46
NuGet Package Manager in Visual Studio. For more information about NuGet, visit http://docs.nuget.org/.

Office Developer Tools for Visual Studio 2013 ENU   12.0.30626
Microsoft Office Developer Tools for Visual Studio 2013 ENU

PowerShell Tools   1.2
Provides file classification services using PowerShell

PreEmptive Analytics Visualizer   1.2
Microsoft Visual Studio extension to visualize aggregated summaries from the PreEmptive Analytics product.

SQL Server Data Tools   12.0.30919.1
Microsoft SQL Server Data Tools

Windows Phone 8.1 SDK Integration   1.0
This package integrates the tools for the Windows Phone 8.1 SDK into the menus and controls of Visual Studio.

Workflow Manager Tools 1.0   1.0
This package contains the necessary Visual Studio integration components for Workflow Manager.

Xamarin   3.3.47.0 (0b2a123923812a88ed3091909478dbe9e0111f00)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android
Comment 6 Eric Maupin 2015-01-19 00:43:44 UTC
This should be fixed in a previous release.
Comment 7 Sadik Ali 2015-01-19 09:52:16 UTC
I have checked this issue with the following build:

Xamarin.Forms:1.3.1.6296

Microsoft Visual Studio Professional 2013
Version 12.0.30723.00 Update 3
Microsoft .NET Framework
Version 4.5.50938
Installed Version: Professional
Xamarin   3.9.236.0 (d6a2cae)
Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.
Xamarin.Android   4.20.0.34 (49a04b966feb40dfdba49d57ba16249b66d606a6)
Visual Studio plugin to enable development for Xamarin.Android.
Xamarin.iOS   8.6.0.0 (eb24bdcf5cba2c12b673a07e0a8cce368b9563b3)
Visual Studio extension to enable development for Xamarin.iOS.
Xamarin.iOS Unified Migration   1.0
Automated migration for Xamarin iOS Classic projects to Unified

Now application working fine without any crash or error. Here is the screencast for the same:http://www.screencast.com/t/l3EYDF02cu

Hence closing this issue.