In Development
Last Updated: 10 Nov 2024 16:09 by ADMIN
Currently there isn't a direct way to hide the scrollbars in the CollectionView.
Unplanned
Last Updated: 08 Nov 2024 14:53 by Marat
Currently, when the Move method of the ItemsSource collection is called for a certain item, the item position is immediately updated without animation.
Unplanned
Last Updated: 14 Oct 2024 18:57 by Alan

Currently the group descriptors provide a SortOrder property, so the groups are sorted alphabetically in descending or ascending order.  We would need to cover the following scenarios:

- allow certain groups to be ordered at the top, possibly by specifying an comparer or a separate group sort property.

- show the groups in order the corresponding items appear in the ItemsSource.

In Development
Last Updated: 07 Oct 2024 13:29 by ADMIN
Scheduled for 8.0.0 (2024 Q4)
Created by: Rodrigo
Comments: 0
Category: CollectionView
Type: Feature Request
3

Hi Team,

Please consider adding a way to cancel a group's expand/collapse action when the user taps on the group header.

For example, through a GroupTapping event handler that fires just before GroupTapped, and we can execute logic that prevents the operation:

private void RadCollectionView_OnGroupTapping(object sender, RadTappingEventArgs<GroupContext> e)
{
    if (e.Data.Key.ToString() == "GroupToStayPermanentlyExpanded")
    {
        e.Cancel();
    }
}


// which uses this imaginary event args with Cancel method
public class RadTappingEventArgs<T>(T data) : RadTappedEventArgs<T>(data)
{
    public void Cancel()
    {
        // prevents GroupTapped event
    }
}

Thank you,

Rodrigo

Unplanned
Last Updated: 02 Oct 2024 05:44 by Jayward
There is a memory leak in the CollectionView on iOS/MacCatalyst - when the CollectionView control is on the page, the page does not dispose when GC runs. Same behavior happens with the RadListview.
Unplanned
Last Updated: 18 Sep 2024 13:13 by Srilekha

In MAUI CollectionView when scrolling an item into view, the exact position of the item after the scroll has completed can be specified with the position argument of the ScrollTo methods.

Please provide such option for Telerik MAUI CollectionView inside the ScrollItemIntoView method.

Unplanned
Last Updated: 18 Sep 2024 11:34 by ADMIN
Created by: Matthew
Comments: 3
Category: CollectionView
Type: Feature Request
7

Add support for sticky group headers (iOS, Android)

This feature is available in the ListView control. E.g. On iOS using the built-in CollectionView it can be added this way:

public class CollectionViewPlatformHandler : CollectionViewHandler { /// <inheritdoc /> protected override ItemsViewLayout SelectLayout() { var layout = base.SelectLayout(); if (ItemsView.IsGrouped && layout is UICollectionViewFlowLayout flowLayout) { // Enable sticky section headers. flowLayout.SectionHeadersPinToVisibleBounds = true; } return layout; } }

Add support for scrollable index titles (iOS).

This feature is available in the ListView control. E.g. On iOS using the built-in CollectionView it can be added this way:

    public class CollectionViewPlatformHandler : CollectionViewHandler
    {
        /// <inheritdoc />
        protected override UIView CreatePlatformView()
        {
            var platformView = base.CreatePlatformView();
            if (ItemsView.IsGrouped && ItemsView.ItemsSource is IEnumerable<IGrouping<string, object>> groups && platformView.Subviews[0] is UICollectionView collectionView)
            {
                // Enable index titles.
                collectionView.DataSource = new GroupedCollectionViewDataSource(collectionView.DataSource, groups.Select(q => q.Key));
            }

            return platformView;
        }
        
        private class GroupedCollectionViewDataSource(IUICollectionViewDataSource datasource, IEnumerable<string> sections) : UICollectionViewDataSource
        {
            public override nint NumberOfSections(UICollectionView collectionView) => datasource.NumberOfSections(collectionView);
            public override nint GetItemsCount(UICollectionView collectionView, nint section) => datasource.GetItemsCount(collectionView, section);
            public override UICollectionViewCell GetCell(UICollectionView collectionView, NSIndexPath indexPath) => datasource.GetCell(collectionView, indexPath);
            public override UICollectionReusableView GetViewForSupplementaryElement(UICollectionView collectionView, NSString elementKind, NSIndexPath indexPath) => datasource.GetViewForSupplementaryElement(collectionView, elementKind, indexPath);
            public override string[] GetIndexTitles(UICollectionView collectionView) => sections.ToArray();
        }
    }
 

Note: This is available out-of-the-box on iOS 14 and above for a native UICollectionView. See documentation.

https://developer.apple.com/documentation/uikit/uicollectionviewdatasource/2851455-indextitlesforcollectionview

Unplanned
Last Updated: 18 Sep 2024 11:31 by Matthew
Created by: Matthew
Comments: 0
Category: CollectionView
Type: Feature Request
5

Add an option to scroll fast to elements inside the CollectionView, something like jump list approach.

This feature is available in the iOS UICollectionView https://developer.apple.com/documentation/uikit/uicollectionviewdatasource/2851455-indextitlesforcollectionview

It could be a great addition to the Telerik MAUI RadCollectionView features set.

 
Unplanned
Last Updated: 14 Aug 2024 08:18 by Steve
Created by: Steve
Comments: 0
Category: CollectionView
Type: Feature Request
0
We would like to give the user the ability to reorder the groups.
Declined
Last Updated: 14 Aug 2024 07:48 by ADMIN

As the Subject says - the CollectionView FooterTemplate Content IsVisible Property is ignored.
First i thought Binding update is not working, but it's not working at all, even if set "hard"

Take your Header & Footer CollectionView example and set IsVisible to false on the Grid

Completed
Last Updated: 07 Aug 2024 08:29 by ADMIN
Release 7.1.0 (2024 Q3)
Created by: Angus
Comments: 2
Category: CollectionView
Type: Feature Request
0
Provide an option to define header and footer templates
Completed
Last Updated: 07 Aug 2024 08:00 by ADMIN
Release 7.1.0 (2024 Q3)
I have a CollectionView that is populated when tapping on an item from another CollectionView. I am using the Add method to add the items to the CollectionView. But the items are duplicated (they are added two times).
Unplanned
Last Updated: 04 Jun 2024 14:28 by Taylor
Created by: Taylor
Comments: 0
Category: CollectionView
Type: Feature Request
0
Provide keyboard navigation support for CollectionView