Not Working with CollectionView

[jobnte]

Hello, I just found that following the example in this repo but changing from tableView to collectionView don't work.

It doesn't scroll vertically.

[jobnte]

For tableView we have to set Row Height & Estimate in Storyboard view (Attribute Inspector) otherwise the size of the tableview will be decreased and not going to show all rows.

[felipericieri]

The problem when working with UICollectionView - in my case - was when its contentSize was set. The library works perfectly fine once you have a greater-than-zero content size height.
Try calling self.view.layoutIfNeeded() when your UICollectionView is filled (aka after data comes in). It will force the container to relayout its subviews.