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Page with TitleView crashes on Android when navigating back to it from Shell Tab #4506

Closed
alwynlombaard opened this issue Feb 4, 2022 · 4 comments · Fixed by #5667
Closed

Page with TitleView crashes on Android when navigating back to it from Shell Tab #4506

alwynlombaard opened this issue Feb 4, 2022 · 4 comments · Fixed by #5667
Labels
area-controls-shell Shell Navigation, Routes, Tabs, Flyout fixed-in-6.0.300-rc.2 Look for this fix in 6.0.300-rc.2! platform/android 🤖 s/verified Verified / Reproducible Issue ready for Engineering Triage t/bug Something isn't working
Milestone
6.0.300-rc.2

Comments

@alwynlombaard
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alwynlombaard commented Feb 4, 2022 •
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Description

Project to reproduce issue: https://github.com/alwynlombaard/maui-shell-titleview-android-crash

An App Shell with two Tabs with one of the Tab Content Pages containing a Shell.TitleView causes a crash on Android when navigating to another Tab and back to the Tab that contains the Shell.TitleView with the following from the log on Android:

02-04 08:55:10.322  8890  8890 I MonoDroid: UNHANDLED EXCEPTION:
02-04 08:55:10.348  8890  8890 I MonoDroid: Java.Lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference instance, JniObjectReference type, JniMethodInfo method, JniArgumentValue* args)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeVirtualVoidMethod(String encodedMember, IJavaPeerable self, JniArgumentValue* parameters)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Android.Views.ViewGroup.AddView(View child)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Handlers.LayoutHandler.SetVirtualView(IView view)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Handlers.ViewHandler`2[[Microsoft.Maui.ILayout, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.Platform.LayoutViewGroup, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].SetVirtualView(IElement view)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Element.SetHandler(IElementHandler newHandler)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Element.set_Handler(IElementHandler value)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.IElement.set_Handler(IElementHandler value)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Platform.ElementExtensions.ToHandler(IElement view, IMauiContext context)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Platform.ElementExtensions.ToNative(IElement view, IMauiContext context)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContentView.OnViewSet(View view)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContentView.set_View(View value)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContentView..ctor(Context context, View view, IMauiContext mauiContext)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContainerView.OnViewSet(View view)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContainerView.set_View(View value)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContainerView..ctor(Context context, View view, IMauiContext mauiContext)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellToolbarTracker.UpdateTitleView(Context context, Toolbar toolbar, View titleView)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellToolbarTracker.UpdateTitleView()
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellToolbarTracker.OnPageChanged(Page oldPage, Page newPage)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellToolbarTracker.set_Page(Page value)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellSectionView.OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at AndroidX.Fragment.App.Fragment.n_OnCreateView_Landroid_view_LayoutInflater_Landroid_view_ViewGroup_Landroid_os_Bundle_(IntPtr jnienv, IntPtr native__this, IntPtr native_inflater, IntPtr native_container, IntPtr native_savedInstanceState)
02-04 08:55:10.349  8890  8890 I MonoDroid:   --- End of managed Java.Lang.IllegalStateException stack trace ---
02-04 08:55:10.349  8890  8890 I MonoDroid: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addViewInner(ViewGroup.java:5235)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:5064)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:5004)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:4976)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at crc64338477404e88479c.ShellSectionView.n_onCreateView(Native Method)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at crc64338477404e88479c.ShellSectionView.onCreateView(ShellSectionView.java:42)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2963)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:518)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:282)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:524)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.os.Handler.handleCallback(Handler.java:938)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.os.Handler.dispatchMessage(Handler.java:99)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.os.Looper.loop(Looper.java:223)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.app.ActivityThread.main(ActivityThread.java:7656)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at java.lang.reflect.Method.invoke(Native Method)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
02-04 08:55:10.350  8890  8890 I MonoDroid: 
02-04 08:55:10.350  8890  8890 I MonoDroid:   --- End of managed Java.Lang.IllegalStateException stack trace ---
02-04 08:55:10.350  8890  8890 I MonoDroid: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addViewInner(ViewGroup.java:5235)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:5064)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:5004)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:4976)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at crc64338477404e88479c.ShellSectionView.n_onCreateView(Native Method)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at crc64338477404e88479c.ShellSectionView.onCreateView(ShellSectionView.java:42)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2963)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:518)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:282)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:524)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.os.Handler.handleCallback(Handler.java:938)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.os.Handler.dispatchMessage(Handler.java:99)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.os.Looper.loop(Looper.java:223)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.app.ActivityThread.main(ActivityThread.java:7656)
02-04 08:55:10.351  8890  8890 I MonoDroid: 	at java.lang.reflect.Method.invoke(Native Method)
02-04 08:55:10.351  8890  8890 I MonoDroid: 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
02-04 08:55:10.351  8890  8890 I MonoDroid: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
02-04 08:55:10.351  8890  8890 I MonoDroid: 
02-04 08:55:10.357   529  8933 I DropBoxManagerService: add tag=data_app_crash isTagEnabled=true flags=0x2
02-04 08:55:10.357   529  2149 W ActivityTaskManager:   Force finishing activity com.companyname.titleviewtestapp/crc6478eb02fbad93c8d6.MainActivity

Steps to Reproduce

New maui project (reproduction project here: https://github.com/alwynlombaard/maui-shell-titleview-android-crash)

  1. dotnet new maui
  2. Add two content pages
  3. Add AppShell with two tabs
<Shell xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:local="clr-namespace:titleviewtestapp"
    x:Class="titleviewtestapp.AppShell"
    x:Name="shell"
    BackgroundColor="White">

<FlyoutItem Title="MainPageGroup" 
                Route="MainPageGroup"
                FlyoutItemIsVisible="False">
        <ShellContent Route="MainPage" 
                      Title="MainPage"
                      ContentTemplate="{DataTemplate local:MainPage}">
        </ShellContent>

        <ShellContent Route="SecondaryPage"
                    Title="SecondaryPage"
                    ContentTemplate="{DataTemplate local:SecondaryPage}">
        </ShellContent>
    </FlyoutItem>

</Shell>
  1. Add Shell.TitleView to one tab Content Pages
 <Shell.TitleView>
        <Grid BackgroundColor="Red">
            <Label Text="Title view" VerticalOptions="Center" HorizontalOptions="Start"/>
            <Image Source="dotnet_bot.png" 
                HorizontalOptions="Center"
                VerticalOptions="Center"
                HeightRequest="50" 
                WidthRequest="50"/>
        </Grid>
    </Shell.TitleView>
  1. Run app on Android
  2. Select SecondaryPage Tab
  3. Select MainPage Tab

Version with bug

Preview 12 (current)

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android 11

Did you find any workaround?

No

Relevant log output

02-04 08:55:10.322  8890  8890 I MonoDroid: UNHANDLED EXCEPTION:
02-04 08:55:10.348  8890  8890 I MonoDroid: Java.Lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference instance, JniObjectReference type, JniMethodInfo method, JniArgumentValue* args)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeVirtualVoidMethod(String encodedMember, IJavaPeerable self, JniArgumentValue* parameters)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Android.Views.ViewGroup.AddView(View child)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Handlers.LayoutHandler.SetVirtualView(IView view)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Handlers.ViewHandler`2[[Microsoft.Maui.ILayout, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.Platform.LayoutViewGroup, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].SetVirtualView(IElement view)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Element.SetHandler(IElementHandler newHandler)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Element.set_Handler(IElementHandler value)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.VisualElement.Microsoft.Maui.IElement.set_Handler(IElementHandler value)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Platform.ElementExtensions.ToHandler(IElement view, IMauiContext context)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Platform.ElementExtensions.ToNative(IElement view, IMauiContext context)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContentView.OnViewSet(View view)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContentView.set_View(View value)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContentView..ctor(Context context, View view, IMauiContext mauiContext)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContainerView.OnViewSet(View view)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContainerView.set_View(View value)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellContainerView..ctor(Context context, View view, IMauiContext mauiContext)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellToolbarTracker.UpdateTitleView(Context context, Toolbar toolbar, View titleView)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellToolbarTracker.UpdateTitleView()
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellToolbarTracker.OnPageChanged(Page oldPage, Page newPage)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellToolbarTracker.set_Page(Page value)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at Microsoft.Maui.Controls.Platform.ShellSectionView.OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
02-04 08:55:10.348  8890  8890 I MonoDroid:    at AndroidX.Fragment.App.Fragment.n_OnCreateView_Landroid_view_LayoutInflater_Landroid_view_ViewGroup_Landroid_os_Bundle_(IntPtr jnienv, IntPtr native__this, IntPtr native_inflater, IntPtr native_container, IntPtr native_savedInstanceState)
02-04 08:55:10.349  8890  8890 I MonoDroid:   --- End of managed Java.Lang.IllegalStateException stack trace ---
02-04 08:55:10.349  8890  8890 I MonoDroid: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addViewInner(ViewGroup.java:5235)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:5064)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:5004)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:4976)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at crc64338477404e88479c.ShellSectionView.n_onCreateView(Native Method)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at crc64338477404e88479c.ShellSectionView.onCreateView(ShellSectionView.java:42)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2963)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:518)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:282)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:524)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.os.Handler.handleCallback(Handler.java:938)
02-04 08:55:10.349  8890  8890 I MonoDroid: 	at android.os.Handler.dispatchMessage(Handler.java:99)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.os.Looper.loop(Looper.java:223)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.app.ActivityThread.main(ActivityThread.java:7656)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at java.lang.reflect.Method.invoke(Native Method)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
02-04 08:55:10.350  8890  8890 I MonoDroid: 
02-04 08:55:10.350  8890  8890 I MonoDroid:   --- End of managed Java.Lang.IllegalStateException stack trace ---
02-04 08:55:10.350  8890  8890 I MonoDroid: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addViewInner(ViewGroup.java:5235)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:5064)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:5004)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.view.ViewGroup.addView(ViewGroup.java:4976)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at crc64338477404e88479c.ShellSectionView.n_onCreateView(Native Method)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at crc64338477404e88479c.ShellSectionView.onCreateView(ShellSectionView.java:42)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2963)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:518)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:282)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:2189)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:2100)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:2002)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at androidx.fragment.app.FragmentManager$5.run(FragmentManager.java:524)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.os.Handler.handleCallback(Handler.java:938)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.os.Handler.dispatchMessage(Handler.java:99)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.os.Looper.loop(Looper.java:223)
02-04 08:55:10.350  8890  8890 I MonoDroid: 	at android.app.ActivityThread.main(ActivityThread.java:7656)
02-04 08:55:10.351  8890  8890 I MonoDroid: 	at java.lang.reflect.Method.invoke(Native Method)
02-04 08:55:10.351  8890  8890 I MonoDroid: 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
02-04 08:55:10.351  8890  8890 I MonoDroid: 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
02-04 08:55:10.351  8890  8890 I MonoDroid: 
02-04 08:55:10.357   529  8933 I DropBoxManagerService: add tag=data_app_crash isTagEnabled=true flags=0x2
02-04 08:55:10.357   529  2149 W ActivityTaskManager:   Force finishing activity com.companyname.titleviewtestapp/crc6478eb02fbad93c8d6.MainActivity
@alwynlombaard alwynlombaard added the t/bug Something isn't working label Feb 4, 2022
@Eilon Eilon added the area-controls-shell Shell Navigation, Routes, Tabs, Flyout label Feb 10, 2022
@dev-thinks
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Fix is much appreciated in next preview. thank you.

@kristinx0211 kristinx0211 added the s/verified Verified / Reproducible Issue ready for Engineering Triage label Mar 1, 2022
@kristinx0211
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verified repro on Android 11, repro sample:
#4506.zip

@ddavid-son
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I have encountered it myself, just to be more specific, the error occurs when there is a layout(i.e Grid/StackLayout) inside the title view, and removing them seems to bypass the problem although this is not a sufficient solution.

@alwynlombaard
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Author

I have found a temporary workaround. In OnAppearring I unset it and set it again. For example in my common BasePage class:

protected override void OnAppearing()
{
    base.OnAppearing();

    Shell.SetTitleView(this, null);

    var logo = new Image{
        Source = "logo.png"
    };
    
    var grid = new Grid();
    grid.Add(logo);

    Shell.SetTitleView(this, grid);
}

@PureWeen PureWeen added this to the 6.0.300-rc.2 milestone Mar 22, 2022
@PureWeen PureWeen mentioned this issue Mar 30, 2022
Merged
@ghost ghost locked as resolved and limited conversation to collaborators May 1, 2022
@samhouts samhouts added the fixed-in-6.0.300-rc.2 Look for this fix in 6.0.300-rc.2! label Feb 17, 2023
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area-controls-shell Shell Navigation, Routes, Tabs, Flyout fixed-in-6.0.300-rc.2 Look for this fix in 6.0.300-rc.2! platform/android 🤖 s/verified Verified / Reproducible Issue ready for Engineering Triage t/bug Something isn't working
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Switch shell to using ToolbarHandler dotnet/maui
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@Eilon @alwynlombaard @PureWeen @samhouts @dev-thinks @ddavid-son @kristinx0211