UICollectionView Floating Headers on Top and Side

Question

How do you implement headers in a UICollectionView? I know you can put in supplementary views, but I don\'t know how to make them \"float\" above a section like hea

Answer 1

Update for iOS9:

let flow = collectionView.collectionViewLayout as! UICollectionViewFlowLayout
flow.sectionHeadersPinToVisibleBounds = true

Pass it along.