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

Update more information:

• If you use flowLayout.estimatedItemSize, suggest use iOS8.3 later version. Before iOS8.3, it will crash [super layoutAttributesForElementsInRect:rect];. The error message is

  *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '*** -[__NSArrayM insertObject:atIndex:]: object cannot be nil'

• Second, in iOS8.x version, flowLayout.estimatedItemSize will cause different section inset setting did not work. i.e. function: (UIEdgeInsets)collectionView:layout:insetForSectionAtIndex:.