iOS 10/11 UICollectionViewFlowLayout using UICollectionViewFlowLayoutAutomaticSize results in footer supplementary view misaligned

Question

So this is an interesting issue we found with UICollectionViewFlowLayout on iOS 10 (still an issue on 11) and using UICollectionViewFlowLayoutAutomaticSize

Answer 1

I came across the same problem. UICollectionViewFlowLayoutAutomaticSize doesn't work for supplementary views. Use the UICollectionViewDelegateFlowLayout to give the size explicitly. Its better to calculate the sizes and use delegates as automatic size calculations causes lagging, at times.

use referenceSizeForHeaderInSection and referenceSizeForFooterInSection delegate methods to give the header and footer size explicitly.