UICollectionView: different size items is not calculated on reused items

Question

I have a collection view with varied item sizes which i declare in

- (CGSize)collectionView:(UICollectionView *)collectionView
                  layout:(UIColle         


        

Answer 1

You can simple override the scroll view delegate

func scrollViewDidScroll(_ scrollView: UIScrollView) {
    collectionView.collectionViewLayout.invalidateLayout()
}