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[Bug] Shell not working correctly on iOS, but works on Android #13793

Open educatedcg opened 3 years ago

educatedcg commented 3 years ago

Description

The Shell navigation seems to work differently on iOS vs. Android. I have the following code:

In my AppShell.xaml, I have a flyout item:

I dynamically on logon load additional menu items, like so:

Style dynamicStyle = (Style)Application.Current.Resources["DomesticShell"];
var flyOutMenu = Shell.Current.FindByName<FlyoutItem>("mainFlyout");
var menuContent = new ShellContent
                                {
                                    Title = "Manage Menu",
                                    Content = new MenuHomePage(),
                                    Route = "menuHome",
                                    ContentTemplate = new DataTemplate(typeof(MenuHomePage)),
                                    ClassId = "menuManagement",
                                    Icon = "menu.png",
                                    Style = dynamicStyle
                                };
                                flyOutMenu.Items.Add(menuContent);

This route is also registers in AppShell.xaml.cs Routing.RegisterRoute("menuHome", typeof(MenuHomePage)); I have a button on this page to navigate to a secondary page, registered with this: Routing.RegisterRoute("editMenu", typeof(EditMenu)); In that button, I call await Shell.Current.GoToAsync("editMenu").ConfigureAwait(true); This navigation works fine on Android, but does not navigate on iOS devices. What am I missing?

Steps to Reproduce

  1. Create an Application with a flyoutmenu
  2. Add items to the flyout menu
  3. Attempt to navigate to pages added to the flyout menu that have routes
  4. Verify this works on Android and iOS

Expected Behavior

Navigate with Shell should work the same on android vs. iOS

Actual Behavior

Navigation works on Android, navigation stays on the same page on iOS

Basic Information

Environment

Show/Hide Visual Studio info ``` Microsoft Visual Studio Professional 2019 Version 16.8.4 VisualStudio.16.Release/16.8.4+30907.101 Microsoft .NET Framework Version 4.8.04084 Installed Version: Professional Visual C++ 2019 00435-20052-01620-AA232 Microsoft Visual C++ 2019 ADL Tools Service Provider 1.0 This package contains services used by Data Lake tools ASA Service Provider 1.0 ASP.NET and Web Tools 2019 16.8.557.25636 ASP.NET and Web Tools 2019 ASP.NET Core Razor Language Services 16.1.0.2052803+84e121f1403378489b842e1797df2f3f5a49ac3c Provides languages services for ASP.NET Core Razor. ASP.NET Web Frameworks and Tools 2019 16.8.557.25636 For additional information, visit https://www.asp.net/ Azure App Service Tools v3.0.0 16.8.557.25636 Azure App Service Tools v3.0.0 Azure Data Lake Node 1.0 This package contains the Data Lake integration nodes for Server Explorer. Azure Data Lake Tools for Visual Studio 2.6.1000.0 Microsoft Azure Data Lake Tools for Visual Studio Azure Functions and Web Jobs Tools 16.8.557.25636 Azure Functions and Web Jobs Tools Azure Stream Analytics Tools for Visual Studio 2.6.1000.0 Microsoft Azure Stream Analytics Tools for Visual Studio C# Tools 3.8.0-5.20604.10+9ed4b774d20940880de8df1ca8b07508aa01c8cd C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used. Common Azure Tools 1.10 Provides common services for use by Azure Mobile Services and Microsoft Azure Tools. Extensibility Message Bus 1.2.6 (master@34d6af2) Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration. Fabric.DiagnosticEvents 1.0 Fabric Diagnostic Events IntelliCode Extension 1.0 IntelliCode Visual Studio Extension Detailed Info JetBrains ReSharper 2020.3.2 Build 203.0.20201229.111204 JetBrains ReSharper package for Microsoft Visual Studio. For more information about ReSharper, visit http://www.jetbrains.com/resharper. Copyright © 2021 JetBrains, Inc. Microsoft Azure HDInsight Azure Node 2.6.1000.0 HDInsight Node under Azure Node Microsoft Azure Hive Query Language Service 2.6.1000.0 Language service for Hive query Microsoft Azure Service Fabric Tools for Visual Studio 16.0 Microsoft Azure Service Fabric Tools for Visual Studio Microsoft Azure Stream Analytics Language Service 2.6.1000.0 Language service for Azure Stream Analytics Microsoft Azure Stream Analytics Node 1.0 Azure Stream Analytics Node under Azure Node Microsoft Azure Tools 2.9 Microsoft Azure Tools for Microsoft Visual Studio 2019 - v2.9.30924.1 Microsoft Continuous Delivery Tools for Visual Studio 0.4 Simplifying the configuration of Azure DevOps pipelines from within the Visual Studio IDE. Microsoft JVM Debugger 1.0 Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines Microsoft Library Manager 2.1.113+g422d40002e.RR Install client-side libraries easily to any web project Microsoft MI-Based Debugger 1.0 Provides support for connecting Visual Studio to MI compatible debuggers Microsoft Visual C++ Wizards 1.0 Microsoft Visual C++ Wizards Microsoft Visual Studio Tools for Containers 1.1 Develop, run, validate your ASP.NET Core applications in the target environment. F5 your application directly into a container with debugging, or CTRL + F5 to edit & refresh your app without having to rebuild the container. Microsoft Visual Studio VC Package 1.0 Microsoft Visual Studio VC Package Mono Debugging for Visual Studio 16.8.43 (00471f8) Support for debugging Mono processes with Visual Studio. NuGet Package Manager 5.8.1 NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/ ProjectServicesPackage Extension 1.0 ProjectServicesPackage Visual Studio Extension Detailed Info SQL Server Data Tools 16.0.62012.31170 Microsoft SQL Server Data Tools Syncfusion Xamarin Project Templates 13.4.0.53 A multi-project template for building iOS, Android, and Windows apps using Syncfusion Xamarin components. Syncfusion Xamarin Toolbox 16.2.0.19 Syncfusion Essential Studio for Xamarin Toolbox Visual Studio extension. SyncfusionMenu Extension 1.0 SyncfusionMenu Visual Studio Extension Detailed Info SyncfusionXamarinMenu Extension 1.0 SyncfusionXamarinMenu Visual Studio Extension Detailed Info ToolWindowHostedEditor 1.0 Hosting json editor into a tool window TypeScript Tools 16.0.21016.2001 TypeScript Tools for Microsoft Visual Studio Visual Basic Tools 3.8.0-5.20604.10+9ed4b774d20940880de8df1ca8b07508aa01c8cd Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used. Visual F# Tools 16.8.0-beta.20507.4+da6be68280c89131cdba2045525b80890401defd Microsoft Visual F# Tools Visual Studio Code Debug Adapter Host Package 1.0 Interop layer for hosting Visual Studio Code debug adapters in Visual Studio Visual Studio Container Tools Extensions 1.0 View, manage, and diagnose containers within Visual Studio. Visual Studio Tools for Containers 1.0 Visual Studio Tools for Containers Visual Studio Tools for Kubernetes 1.0 Visual Studio Tools for Kubernetes VisualStudio.DeviceLog 1.0 Information about my package VisualStudio.Foo 1.0 Information about my package VisualStudio.Mac 1.0 Mac Extension for Visual Studio Xamarin 16.8.000.261 (d16-8@bb99248) Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android. Xamarin Designer 16.8.0.507 (remotes/origin/d16-8@e87b24884) Visual Studio extension to enable Xamarin Designer tools in Visual Studio. Xamarin Templates 16.8.112 (86385a3) Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms. Xamarin.Android SDK 11.1.0.26 (d16-8/a36ce73) Xamarin.Android Reference Assemblies and MSBuild support. Mono: 5e9cb6d Java.Interop: xamarin/java.interop/d16-8@79d9533 ProGuard: Guardsquare/proguard/proguard6.2.2@ebe9000 SQLite: xamarin/sqlite/3.32.1@1a3276b Xamarin.Android Tools: xamarin/xamarin-android-tools/d16-8@2fb1cbc Xamarin.iOS and Xamarin.Mac SDK 14.8.0.3 (c51fabee8) Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support. ```

Build Logs

Screenshots

Reproduction Link

Workaround

educatedcg commented 3 years ago

This workaround seems to work. FlyoutDisplayOptions="AsMultipleItems" basically breaks navigation on iOS.

AbhijeetChowdhury92 commented 2 years ago

Hi, FlyoutDisplayOptions="AsMultipleItems" was working perfectly without any navigation problems on Xamarin.Forms version 5.0.0.1874 but it started failing thereafter.

As per the workaround suggested here, it works but rewriting the structure is problematic.

Is there a quick fix to this?