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

A collection view seems to recompute items less often than a UITableView. You have to inform the collection view about most of the changes to the underlying model, e.g. by calling [collectionView reloadData] or [collectionView insertItemsAtIndexPaths:indexPaths].