ios - UICollectionView scroll to item not working with horizontal direction

Question

I have a UICollectionView within a UIViewController with paging enabled. For some strange reason collectionView.scrollToItem works when the direction of the collectionview is vertical but doesn't when direction is horizontal. Is this there something I'm doing wrong or is this supposed to happen?

  //Test scrollToItem
  func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    let i = IndexPath(item: 3, section: 0)
    collectionView.reloadData()
      collectionView.scrollToItem(at: i, at: .top, animated: true)
      print("Selected")
  }

question from:https://stackoverflow.com/questions/41884645/uicollectionview-scroll-to-item-not-working-with-horizontal-direction

Answer 1

For iOS 14

Apparently there is a new bug in UICollectionView that is causing scrollToItem to not work when paging is enabled. The work around is to disable paging before calling scrollToItem, then re-enabling it afterwards:

collectionView.isPagingEnabled = false
collectionView.scrollToItem(
    at: IndexPath(item: value, section: 0),
    at: .centeredHorizontally,
    animated: true
)
collectionView.isPagingEnabled = true

Source: https://developer.apple.com/forums/thread/663156