Category "uicollectionview"

How to animate collection view layout change while using `layoutAttributesForElements`?

I made a custom collection view flow layout that can toggle (with animation) between "film-strip" and "list" layouts. But after adding some fancy animations to

Snap to center of a cell when scrolling UICollectionView horizontally

I know some people have asked this question before but they were all about UITableViews or UIScrollViews and I couldn't get the accepted solution to work for me

UICollectionView not calling moveItemAt:To: Data Source method in response to endInteractiveMovement()

I'm having a difficult time getting interactive reordering to work in a UICollectionView embedded in a subclassed UIViewController. There is no custom layout ob

Horizontal scroll UICollectionView has additional line spacing?

I'm trying to use UICollectionView to make a table, when I set it to vertical scroll, everything is working great. But when I set it to horizontal scroll, it a

Why UICollectionView didSelect method does not work?

I've created my UICollectionView programmatically and in this case my didSelectItemAtIndexPath method does not call at all. let collectionView = UICollectionVi

iOS 15 UICollectionView issue for UICollectionViewRecursion

The application is working fine till Xcode 12 and iOS 14 but as soon as I upgraded to Xcode 13 / iOS 15 my application stoped working with below error log 2021-