UICollectionView autosize height

Question

How do I properly resize a UICollectionView so that it fully displays its contents? I have tried many things, including setting its frame, calling reloadData an

Answer 1

For me it is even simpler I think

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath

{
//add following code line after adding cells, before Return
...........
.........
scrollView.contentSize = = collectionView.contentSize;

//now scrollView size is equal to collectionView size. No matter how small or big it is.

return cell;
}