In .NET 8 IOS platform getting exception while remove the child from the current layout. about maui HOT 4 OPEN

Your exception is

System.InvalidOperationException: MauiContext should have been set on parent.
   at Microsoft.Maui.Platform.ElementExtensions.ToPlatform(IElement view)
   at Microsoft.Maui.Handlers.LayoutHandler.Remove(IView child)
   at Microsoft.Maui.Handlers.LayoutHandler.MapRemove(ILayoutHandler handler, ILayout layout, Object arg)
   at Microsoft.Maui.CommandMapper`2.<>c__DisplayClass6_0[[Microsoft.Maui.ILayout, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.ILayoutHandler, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<Add>b__0(IElementHandler h, IElement v, Object o)
   at Microsoft.Maui.CommandMapper.InvokeCore(String key, IElementHandler viewHandler, IElement virtualView, Object args)
   at Microsoft.Maui.CommandMapper.Invoke(IElementHandler viewHandler, IElement virtualView, String property, Object args)
   at Microsoft.Maui.Handlers.ElementHandler.Invoke(String command, Object args)
   at Microsoft.Maui.Controls.Layout.NotifyHandler(String action, Int32 index, IView view)
   at Microsoft.Maui.Controls.Layout.OnRemove(Int32 index, IView view)
   at Microsoft.Maui.Controls.Layout.RemoveAt(Int32 index)
   at Microsoft.Maui.Controls.Layout.Remove(IView child)
   at Syncfusion.Maui.ImageEditor.ImageEditLayout.RemoveCropView()
   at Syncfusion.Maui.ImageEditor.ImageEditLayout.Syncfusion.Maui.ImageEditor.IToolbarActions.CancelEdit()
   at Syncfusion.Maui.ImageEditor.ToolbarLayout.HandleItemTapped(SfToolbarItem tappedItem, SfToolbarItem previousItem)
   at Syncfusion.Maui.ImageEditor.ToolbarLayout.OnToolbarItemTapped(Object sender, ToolbarTappedEventArgs e)
   at Syncfusion.Maui.Core.Internals.SfToolbar.Syncfusion.Maui.Core.Internals.IToolbar.InvokeTappedEvent(SfToolbarItem toolbarItem, SfToolbarItem previousToolbarItem)
   at Syncfusion.Maui.Core.Internals.SfToolbarLayout.Syncfusion.Maui.Core.Internals.ITapGestureListener.OnTap(TapEventArgs e)
   at Syncfusion.Maui.Core.Internals.GestureDetector.OnTapped(Point touchPoint, Int32 tapCount)
   at Syncfusion.Maui.Core.Internals.GestureDetector.UITapGestureExt.OnTap(GestureDetector gestureDetector)
   at Syncfusion.Maui.Core.Internals.GestureDetector.UITapGestureExt.<>c__DisplayClass1_0.<.ctor>b__0()
   at UIKit.UIGestureRecognizer.ParameterlessDispatch.Activated() in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIGestureRecognizer.cs:line 107
--- End of stack trace from previous location ---
   at ObjCRuntime.Runtime.ThrowException(IntPtr gchandle) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/ObjCRuntime/Runtime.cs:line 2594
   at UIKit.UIApplication.UIApplicationMain(Int32 argc, String[] argv, IntPtr principalClassName, IntPtr delegateClassName) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 60
   at UIKit.UIApplication.Main(String[] args, Type principalClass, Type delegateClass) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 94
   at MauiMopupsSample.Program.Main(String[] args) in /Users/drasticactions/Developer/Work/ImageEditor-Mopup-Issue/MauiMopupsSample/MauiMopupsSample/MauiMopupsSample/Platforms/iOS/Program.cs:line 13

The important parts are

System.InvalidOperationException: MauiContext should have been set on parent.

and

Syncfusion.Maui.Core.Internals.SfToolbar.Syncfusion.Maui.Core.Internals.IToolbar.InvokeTappedEvent(SfToolbarItem toolbarItem, SfToolbarItem previousToolbarItem)

IMO, this seems like a Syncfusion issue. I would direct this to them first, as I think that's the issue's root. If it is MAUI, they can circle back.

@PureWeen @mattleibow what do you all think?

from maui.

I get the same exception when using Carousel in MAUI, it started in version 8.0.60, I tested it in v8.0.40 and it works fine there.
I even tried it in the latest nightly build, 8.0.70-ci.net8.24139.2 and it happens there as well.
For me it takes place when I move to the 4th page of the carousel, the first 3 pages work fine, as soon as I try to move to the 4th page I get the crash.

2024-06-20 20:59:32.172790+0100 MyProject[4427:14609335] Unhandled managed exception: MauiContext should have been set on parent. (System.InvalidOperationException)
   at Microsoft.Maui.Platform.ElementExtensions.ToPlatform(IElement view)
   at Microsoft.Maui.Handlers.LayoutHandler.Remove(IView child)
   at Microsoft.Maui.Handlers.LayoutHandler.MapRemove(ILayoutHandler handler, ILayout layout, Object arg)
   at Microsoft.Maui.CommandMapper`2.<>c__DisplayClass6_0[[Microsoft.Maui.ILayout, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.ILayoutHandler, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<Add>b__0(IElementHandler h, IElement v, Object o)
   at Microsoft.Maui.CommandMapper.InvokeCore(String key, IElementHandler viewHandler, IElement virtualView, Object args)
   at Microsoft.Maui.CommandMapper.Invoke(IElementHandler viewHandler, IElement virtualView, String property, Object args)
   at Microsoft.Maui.Handlers.ElementHandler.Invoke(String command, Object args)
   at Microsoft.Maui.Controls.Layout.NotifyHandler(String action, Int32 index, IView view)
   at Microsoft.Maui.Controls.Layout.OnRemove(Int32 index, IView view)
   at Microsoft.Maui.Controls.FlexLayout.OnRemove(Int32 index, IView view)
   at Microsoft.Maui.Controls.Layout.RemoveAt(Int32 index)
   at Microsoft.Maui.Controls.BindableLayout.RemoveAt(IBindableLayout layout, Int32 index)
   at Microsoft.Maui.Controls.BindableLayoutController.ClearChildren(IBindableLayout layout)
   at Microsoft.Maui.Controls.BindableLayoutController.CreateChildren()
   at Microsoft.Maui.Controls.BindableLayoutController.SetItemsSource(IEnumerable itemsSource)
   at Microsoft.Maui.Controls.BindableLayoutController.set_ItemsSource(IEnumerable value)
   at Microsoft.Maui.Controls.BindableLayout.<>c.<.cctor>b__24_0(BindableObject b, Object o, Object n)
   at Microsoft.Maui.Controls.BindableObject.SetValueActual(BindableProperty property, BindablePropertyContext context, Object value, Boolean currentlyApplying, SetValueFlags attributes, SetterSpecificity specificity, Boolean silent)
   at Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes, SetterSpecificity specificity)
   at Microsoft.Maui.Controls.BindingExpression.ApplyCore(Object sourceObject, BindableObject target, BindableProperty property, Boolean fromTarget, SetterSpecificity specificity)
   at Microsoft.Maui.Controls.BindingExpression.Apply(Object sourceObject, BindableObject target, BindableProperty property, SetterSpecificity specificity)
   at Microsoft.Maui.Controls.Binding.Apply(Object context, BindableObject bindObj, BindableProperty targetProperty, Boolean fromBindingContextChanged, SetterSpecificity specificity)
   at Microsoft.Maui.Controls.BindableObject.ApplyBindings(Boolean skipBindingContext, Boolean fromBindingContextChanged)
   at Microsoft.Maui.Controls.BindableObject.BindingContextPropertyChanged(BindableObject bindable, Object oldvalue, Object newvalue)
   at Microsoft.Maui.Controls.BindableObject.SetValueActual(BindableProperty property, BindablePropertyContext context, Object value, Boolean currentlyApplying, SetValueFlags attributes, SetterSpecificity specificity, Boolean silent)
   at Microsoft.Maui.Controls.BindableObject.SetValueCore(BindableProperty property, Object value, SetValueFlags attributes, SetValuePrivateFlags privateAttributes, SetterSpecificity specificity)
   at Microsoft.Maui.Controls.BindableObject.SetValue(BindableProperty property, Object value)
   at Microsoft.Maui.Controls.BindableObject.set_BindingContext(Object value)
   at Microsoft.Maui.Controls.Handlers.Items.TemplatedCell.Unbind()
   at Microsoft.Maui.Controls.Handlers.Items.TemplatedCell.PrepareForReuse()
   at UIKit.UICollectionView.DequeueReusableCell(NSString reuseIdentifier, NSIndexPath indexPath) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/build/dotnet/ios/generated-sources/UIKit/UICollectionView.g.cs:line 234
   at UIKit.UICollectionView.DequeueReusableCell(String reuseIdentifier, NSIndexPath indexPath) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UICollectionView.cs:line 23
   at Microsoft.Maui.Controls.Handlers.Items.ItemsViewController`1[[Microsoft.Maui.Controls.CarouselView, Microsoft.Maui.Controls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].GetCell(UICollectionView collectionView, NSIndexPath indexPath)
   at Microsoft.Maui.Controls.Handlers.Items.CarouselViewController.GetCell(UICollectionView collectionView, NSIndexPath indexPath)
   at UIKit.UIApplication.UIApplicationMain(Int32 argc, String[] argv, IntPtr principalClassName, IntPtr delegateClassName) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 58
   at UIKit.UIApplication.Main(String[] args, Type principalClass, Type delegateClass) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 94

from maui.

I can repro this issue on Visual Studio 17.11.0 Preview 2.1 ( 8.0.40)

from maui.

Your exception is

System.InvalidOperationException: MauiContext should have been set on parent.
   at Microsoft.Maui.Platform.ElementExtensions.ToPlatform(IElement view)
   at Microsoft.Maui.Handlers.LayoutHandler.Remove(IView child)
   at Microsoft.Maui.Handlers.LayoutHandler.MapRemove(ILayoutHandler handler, ILayout layout, Object arg)
   at Microsoft.Maui.CommandMapper`2.<>c__DisplayClass6_0[[Microsoft.Maui.ILayout, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.ILayoutHandler, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<Add>b__0(IElementHandler h, IElement v, Object o)
   at Microsoft.Maui.CommandMapper.InvokeCore(String key, IElementHandler viewHandler, IElement virtualView, Object args)
   at Microsoft.Maui.CommandMapper.Invoke(IElementHandler viewHandler, IElement virtualView, String property, Object args)
   at Microsoft.Maui.Handlers.ElementHandler.Invoke(String command, Object args)
   at Microsoft.Maui.Controls.Layout.NotifyHandler(String action, Int32 index, IView view)
   at Microsoft.Maui.Controls.Layout.OnRemove(Int32 index, IView view)
   at Microsoft.Maui.Controls.Layout.RemoveAt(Int32 index)
   at Microsoft.Maui.Controls.Layout.Remove(IView child)
   at Syncfusion.Maui.ImageEditor.ImageEditLayout.RemoveCropView()
   at Syncfusion.Maui.ImageEditor.ImageEditLayout.Syncfusion.Maui.ImageEditor.IToolbarActions.CancelEdit()
   at Syncfusion.Maui.ImageEditor.ToolbarLayout.HandleItemTapped(SfToolbarItem tappedItem, SfToolbarItem previousItem)
   at Syncfusion.Maui.ImageEditor.ToolbarLayout.OnToolbarItemTapped(Object sender, ToolbarTappedEventArgs e)
   at Syncfusion.Maui.Core.Internals.SfToolbar.Syncfusion.Maui.Core.Internals.IToolbar.InvokeTappedEvent(SfToolbarItem toolbarItem, SfToolbarItem previousToolbarItem)
   at Syncfusion.Maui.Core.Internals.SfToolbarLayout.Syncfusion.Maui.Core.Internals.ITapGestureListener.OnTap(TapEventArgs e)
   at Syncfusion.Maui.Core.Internals.GestureDetector.OnTapped(Point touchPoint, Int32 tapCount)
   at Syncfusion.Maui.Core.Internals.GestureDetector.UITapGestureExt.OnTap(GestureDetector gestureDetector)
   at Syncfusion.Maui.Core.Internals.GestureDetector.UITapGestureExt.<>c__DisplayClass1_0.<.ctor>b__0()
   at UIKit.UIGestureRecognizer.ParameterlessDispatch.Activated() in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIGestureRecognizer.cs:line 107
--- End of stack trace from previous location ---
   at ObjCRuntime.Runtime.ThrowException(IntPtr gchandle) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/ObjCRuntime/Runtime.cs:line 2594
   at UIKit.UIApplication.UIApplicationMain(Int32 argc, String[] argv, IntPtr principalClassName, IntPtr delegateClassName) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 60
   at UIKit.UIApplication.Main(String[] args, Type principalClass, Type delegateClass) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 94
   at MauiMopupsSample.Program.Main(String[] args) in /Users/drasticactions/Developer/Work/ImageEditor-Mopup-Issue/MauiMopupsSample/MauiMopupsSample/MauiMopupsSample/Platforms/iOS/Program.cs:line 13

The important parts are

System.InvalidOperationException: MauiContext should have been set on parent.

and

Syncfusion.Maui.Core.Internals.SfToolbar.Syncfusion.Maui.Core.Internals.IToolbar.InvokeTappedEvent(SfToolbarItem toolbarItem, SfToolbarItem previousToolbarItem)

IMO, this seems like a Syncfusion issue. I would direct this to them first, as I think that's the issue's root. If it is MAUI, they can circle back.

@PureWeen @mattleibow what do you all think?

Your exception is

System.InvalidOperationException: MauiContext should have been set on parent.
   at Microsoft.Maui.Platform.ElementExtensions.ToPlatform(IElement view)
   at Microsoft.Maui.Handlers.LayoutHandler.Remove(IView child)
   at Microsoft.Maui.Handlers.LayoutHandler.MapRemove(ILayoutHandler handler, ILayout layout, Object arg)
   at Microsoft.Maui.CommandMapper`2.<>c__DisplayClass6_0[[Microsoft.Maui.ILayout, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null],[Microsoft.Maui.ILayoutHandler, Microsoft.Maui, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].<Add>b__0(IElementHandler h, IElement v, Object o)
   at Microsoft.Maui.CommandMapper.InvokeCore(String key, IElementHandler viewHandler, IElement virtualView, Object args)
   at Microsoft.Maui.CommandMapper.Invoke(IElementHandler viewHandler, IElement virtualView, String property, Object args)
   at Microsoft.Maui.Handlers.ElementHandler.Invoke(String command, Object args)
   at Microsoft.Maui.Controls.Layout.NotifyHandler(String action, Int32 index, IView view)
   at Microsoft.Maui.Controls.Layout.OnRemove(Int32 index, IView view)
   at Microsoft.Maui.Controls.Layout.RemoveAt(Int32 index)
   at Microsoft.Maui.Controls.Layout.Remove(IView child)
   at Syncfusion.Maui.ImageEditor.ImageEditLayout.RemoveCropView()
   at Syncfusion.Maui.ImageEditor.ImageEditLayout.Syncfusion.Maui.ImageEditor.IToolbarActions.CancelEdit()
   at Syncfusion.Maui.ImageEditor.ToolbarLayout.HandleItemTapped(SfToolbarItem tappedItem, SfToolbarItem previousItem)
   at Syncfusion.Maui.ImageEditor.ToolbarLayout.OnToolbarItemTapped(Object sender, ToolbarTappedEventArgs e)
   at Syncfusion.Maui.Core.Internals.SfToolbar.Syncfusion.Maui.Core.Internals.IToolbar.InvokeTappedEvent(SfToolbarItem toolbarItem, SfToolbarItem previousToolbarItem)
   at Syncfusion.Maui.Core.Internals.SfToolbarLayout.Syncfusion.Maui.Core.Internals.ITapGestureListener.OnTap(TapEventArgs e)
   at Syncfusion.Maui.Core.Internals.GestureDetector.OnTapped(Point touchPoint, Int32 tapCount)
   at Syncfusion.Maui.Core.Internals.GestureDetector.UITapGestureExt.OnTap(GestureDetector gestureDetector)
   at Syncfusion.Maui.Core.Internals.GestureDetector.UITapGestureExt.<>c__DisplayClass1_0.<.ctor>b__0()
   at UIKit.UIGestureRecognizer.ParameterlessDispatch.Activated() in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIGestureRecognizer.cs:line 107
--- End of stack trace from previous location ---
   at ObjCRuntime.Runtime.ThrowException(IntPtr gchandle) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/ObjCRuntime/Runtime.cs:line 2594
   at UIKit.UIApplication.UIApplicationMain(Int32 argc, String[] argv, IntPtr principalClassName, IntPtr delegateClassName) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 60
   at UIKit.UIApplication.Main(String[] args, Type principalClass, Type delegateClass) in /Users/builder/azdo/_work/1/s/xamarin-macios/src/UIKit/UIApplication.cs:line 94
   at MauiMopupsSample.Program.Main(String[] args) in /Users/drasticactions/Developer/Work/ImageEditor-Mopup-Issue/MauiMopupsSample/MauiMopupsSample/MauiMopupsSample/Platforms/iOS/Program.cs:line 13

The important parts are

System.InvalidOperationException: MauiContext should have been set on parent.

and

Syncfusion.Maui.Core.Internals.SfToolbar.Syncfusion.Maui.Core.Internals.IToolbar.InvokeTappedEvent(SfToolbarItem toolbarItem, SfToolbarItem previousToolbarItem)

IMO, this seems like a Syncfusion issue. I would direct this to them first, as I think that's the issue's root. If it is MAUI, they can circle back.

@PureWeen @mattleibow what do you all think?

Yea, the error here is that a view is being removed from a layout that is no longer connected.

We do get the index as part of the remove command

so, in theory we could use the index vs the platform view to remove the view, but I do worry this just moves the exception down the pipeline. Because there shouldn't really be a path like this triggering.

from maui.