Bug: iOS - CollectionView scroll sometimes stops working if swipeView is inside datatemplate

[SamuelJames101]

Description

If you half swipe open a swipe view and then swipe it close it sometimes stops the collectionView from scrolling.

This scroll starts working again after using a swipe view again.

Tested on iOS and Android and can only see the issue on iOS

Steps to Reproduce

1.Create a collectionView
2.Set the DataTemplate to contain a SwipeView.
3.Half swipe a CollectionView Item.
4.Try to scroll the CollectionView
5. If you can Scroll retake steps 3 & 4 until it happens.

Link to public reproduction project repository

https://github.com/SamuelJames101/CollectionViewDataTemplateIssue

Version with bug

8.0.0-preview.7.8842

Is this a regression from previous behavior?

Not sure, did not test other versions

Last version that worked well

Unknown/Other

Affected platforms

iOS

Affected platform versions

iPhone 11 Pro, iOS 13.1.1

Did you find any workaround?

No response

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.

[edgedj]

We are also experiencing this on a client app. When running on iOS the app appears to freeze when on a view that scrolls with swipe items. It happens intermittently when a swipe item is partially swiped while the view is scrolling, the entire view locks up until the swipe item is moved. Other views in the app continue to function but on return to the frozen view the view remains frozen. the only way to resolve is to either kill the entire app and reload or re-swipe the stuck item (this is not obvious to the user though as there is no visibly stuck swipe item)

[divyesh008]

Here is a temporary work around using the Scrolled event of CollectionView.

private bool isScrolling = false;
private double previousScrollY = 0;

void CollectionView_Scrolled(System.Object sender, Microsoft.Maui.Controls.ItemsViewScrolledEventArgs e)
{
    if (!isScrolling)
    {
        isScrolling = true;
        MainThread.BeginInvokeOnMainThread(() =>
        {
            foreach (var item in contacts.GetVisualTreeDescendants().OfType<CustomSwipeView>())
            {
                item.IsEnabled = false;
            }
        });

        Dispatcher.StartTimer(TimeSpan.FromSeconds(0.5), () =>
        {
            if (previousScrollY == e.VerticalOffset)
            {
                isScrolling = false;

                MainThread.BeginInvokeOnMainThread(() =>
                {
                    foreach (var item in contacts.GetVisualTreeDescendants().OfType<CustomSwipeView>())
                    {
                        item.IsEnabled = true;
                    }
                });

                return false; // Stop the timer
            }

            previousScrollY = e.VerticalOffset;
            return true; // Continue the timer
        });
    }
}

• This code implements functionality to manage the behavior of SwipeView elements within a CollectionView during scrolling. The CollectionView is referenced using the x:Name property as contacts.
• When scrolling is detected, SwipeView elements are disabled to prevent interactions.
• After scrolling stops, SwipeView elements are re-enabled, allowing users to interact with them as intended.
• This workaround optimizes the user experience by ensuring smooth interaction with SwipeView elements within the CollectionView.

[Flais]

One MAUI bug nearly fixed, running into the next one. This is anoying. And again it is a bug preventing us to go live. The main view uses that CollectionView SwipeView combination.
Thanks to @divyesh008 , I will give it a try. In simulator it looks better, but also had one freeze. Will give it to our tester.

[divyesh008]

@Flais glad it helped you. But if you still face an issue with the workaround, you have to use Syncfusion's SFListView control.