.NET MAUI - Redirecting to AppShell page throws "Can not perform this action after onsaveinstancestate" exception

[DharunAR]

Description

I am in the progress on migrating my Xamarin project to MAUI with .NET 7.

I have a login page when the app opens, on button click the login process will happen via WebAuthenticator. Once the login is successful I am redirecting to AppShell Page.

On redirecting to appshell, I am getting error ""

Steps to Reproduce

1. Clone the reproduction project repository to your local.
2. I have added my mobileAPP microsoft login URL in webAuthenticator, you can use any URL which can redirect back to the APP.
3. On redirecting to AppShell page, you can find it throws the error.
4. I am calling AppShell page on "Onresume" method.

Link to public reproduction project repository

https://github.com/DharunAR/SecureTest

Version with bug

7.0.96

Is this a regression from previous behavior?

Yes, this used to work in Xamarin.Forms

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android 12 and 13.

Did you find any workaround?

No.

Relevant log output

No response

[ghost]

We've added this issue to our backlog, and we will work to address it as time and resources allow. If you have any additional information or questions about this issue, please leave a comment. For additional info about issue management, please read our Triage Process.

[DharunAR]

Since it is been added to the Backlog. Do we have any workaround for this issue? This is blocking us from our migration.

[Gekidoku]

I found that doing the change on the mainthread and adding a delay works. on faster phones.
some customers of mine still have this crash on something like a samsung xcover 4 or 5

MainThread.BeginInvokeOnMainThread(async () =>
{
            
           await Task.Delay(100);
               MainPage = new AppShell();
            });
});

[damiand2]

Same issue here - setting MainPage to AppShell causes random crashes on production with callstack like:
Java.Interop.JniEnvironment.InstanceMethods.CallIntMethod(JniObjectReference , JniMethodInfo , JniArgumentValue* ) Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeAbstractInt32Method(String , IJavaPeerable , JniArgumentValue* ) AndroidX.Fragment.App.FragmentTransactionInvoker.Commit() Microsoft.Maui.Platform.NavigationRootManager.SetContentView(IView view) Microsoft.Maui.Platform.NavigationRootManager.Connect(IView view, IMauiContext mauiContext) Microsoft.Maui.Handlers.WindowHandler.CreateRootViewFromContent(IWindowHandler handler, IWindow window) Microsoft.Maui.Handlers.WindowHandler.MapContent(IWindowHandler handler, IWindow window) Microsoft.Maui.PropertyMapper``2.<>c__DisplayClass5_0[[Microsoft.Maui.IWindow, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.Handlers.IWindowHandler, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<Add>b__0(IElementHandler h, IElement v) Microsoft.Maui.PropertyMapper.UpdatePropertyCore(String key, IElementHandler viewHandler, IElement virtualView) Microsoft.Maui.PropertyMapper.UpdateProperty(IElementHandler viewHandler, IElement virtualView, String property) Microsoft.Maui.Handlers.ElementHandler.UpdateValue(String property) Microsoft.Maui.Controls.Window.OnPropertyChanged(String propertyName) Microsoft.Maui.Controls.BindableObject.SetValueActual(BindableProperty property, BindablePropertyContext context, Object value, Boolean currentlyApplying, SetValueFlags attributes, Boolean silent) Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes) Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value, Boolean fromStyle, Boolean checkAccess) Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value) Microsoft.Maui.Controls.Window.set_Page(Page value) Microsoft.Maui.Controls.Application.set_MainPage(Page value) XXX.Mobile.App.<InitializeUI>b__2_5() Java.Lang.Thread.RunnableImplementor.Run() Java.Lang.IRunnableInvoker.n_Run(IntPtr , IntPtr ) Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PP_V(_JniMarshal_PP_V , IntPtr , IntPtr ) java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState androidx.fragment.app.FragmentManager.checkStateLoss FragmentManager.java:1632 androidx.fragment.app.FragmentManager.enqueueAction FragmentManager.java:1672 androidx.fragment.app.BackStackRecord.commitInternal BackStackRecord.java:341 androidx.fragment.app.BackStackRecord.commit BackStackRecord.java:306 mono.java.lang.RunnableImplementor.n_run(Native Method) mono.java.lang.RunnableImplementor.run RunnableImplementor.java:31 android.os.Handler.handleCallback Handler.java:938 android.os.Handler.dispatchMessage Handler.java:99 android.os.Looper.loopOnce Looper.java:226 android.os.Looper.loop Looper.java:313 android.app.ActivityThread.main ActivityThread.java:8669 java.lang.reflect.Method.invoke(Native Method) com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run RuntimeInit.java:571 com.android.internal.os.ZygoteInit.main ZygoteInit.java:1135

[Gekidoku]

Seems the sleep doesnt always work. still getting the error in google play crash logs.

[pulmuone]

Same issue here - setting MainPage to AppShell causes random crashes on production with callstack like: Java.Interop.JniEnvironment.InstanceMethods.CallIntMethod(JniObjectReference , JniMethodInfo , JniArgumentValue* ) Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeAbstractInt32Method(String , IJavaPeerable , JniArgumentValue* ) AndroidX.Fragment.App.FragmentTransactionInvoker.Commit() Microsoft.Maui.Platform.NavigationRootManager.SetContentView(IView view) Microsoft.Maui.Platform.NavigationRootManager.Connect(IView view, IMauiContext mauiContext) Microsoft.Maui.Handlers.WindowHandler.CreateRootViewFromContent(IWindowHandler handler, IWindow window) Microsoft.Maui.Handlers.WindowHandler.MapContent(IWindowHandler handler, IWindow window) Microsoft.Maui.PropertyMapper2.<>c__DisplayClass5_0[[Microsoft.Maui.IWindow, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.Handlers.IWindowHandler, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].b__0(IElementHandler h, IElement v) Microsoft.Maui.PropertyMapper.UpdatePropertyCore(String key, IElementHandler viewHandler, IElement virtualView) Microsoft.Maui.PropertyMapper.UpdateProperty(IElementHandler viewHandler, IElement virtualView, String property) Microsoft.Maui.Handlers.ElementHandler.UpdateValue(String property) Microsoft.Maui.Controls.Window.OnPropertyChanged(String propertyName) Microsoft.Maui.Controls.BindableObject.SetValueActual(BindableProperty property, BindablePropertyContext context, Object value, Boolean currentlyApplying, SetValueFlags attributes, Boolean silent) Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes) Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value, Boolean fromStyle, Boolean checkAccess) Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value) Microsoft.Maui.Controls.Window.set_Page(Page value) Microsoft.Maui.Controls.Application.set_MainPage(Page value) XXX.Mobile.App.b__2_5() Java.Lang.Thread.RunnableImplementor.Run() Java.Lang.IRunnableInvoker.n_Run(IntPtr , IntPtr ) Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PP_V(_JniMarshal_PP_V , IntPtr , IntPtr ) java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState androidx.fragment.app.FragmentManager.checkStateLoss FragmentManager.java:1632 androidx.fragment.app.FragmentManager.enqueueAction FragmentManager.java:1672 androidx.fragment.app.BackStackRecord.commitInternal BackStackRecord.java:341 androidx.fragment.app.BackStackRecord.commit BackStackRecord.java:306 mono.java.lang.RunnableImplementor.n_run(Native Method) mono.java.lang.RunnableImplementor.run RunnableImplementor.java:31 android.os.Handler.handleCallback Handler.java:938 android.os.Handler.dispatchMessage Handler.java:99 android.os.Looper.loopOnce Looper.java:226 android.os.Looper.loop Looper.java:313 android.app.ActivityThread.main ActivityThread.java:8669 java.lang.reflect.Method.invoke(Native Method) com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run RuntimeInit.java:571 com.android.internal.os.ZygoteInit.main ZygoteInit.java:1135 ``

Same Issue

[PureWeen]

Duplicate of #11501

Try doing it inside OnActivated instead of OnResume

[pulmuone]

Duplicate of #11501

Try doing it inside OnActivated instead of OnResume

The app is crashing randomly.