UICollectionView Self Sizing Cells with Auto Layout

Question

I\'m trying to get self sizing UICollectionViewCells working with Auto Layout, but I can\'t seem to get the cells to size themselves to the content. I\'m having

Answer 1

If you implement UICollectionViewDelegateFlowLayout method:

- (CGSize)collectionView:(UICollectionView*)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath*)indexPath

When you call collectionview performBatchUpdates:completion:, the size height will use sizeForItemAtIndexPath instead of preferredLayoutAttributesFittingAttributes.

The rendering process of performBatchUpdates:completion will go through the method preferredLayoutAttributesFittingAttributes but it ignores your changes.