I found a blog on how to make sticky headers and it works great. Only thing is I don\'t think it takes into account the sectionInserts.
This is how its intended to l
Simplest solution for iOS 9 + as it doesn't need of writing subclass of UICollectionViewFlowLayout.
In viewDidLoad of viewController with collectionView use following code:
let layout = collectionView.collectionViewLayout as? UICollectionViewFlowLayout // casting is required because UICollectionViewLayout doesn't offer header pin. Its feature of UICollectionViewFlowLayout
layout?.sectionHeadersPinToVisibleBounds = true