jerry0523 / stickycollectionviewflowlayout

StickyCollectionViewFlowLayout

A UICollectionViewFlowLayout subclass that supports CSS sticky style.

You could pin everything(item/header/footer) to the edge of the collectionView with a specific distance.

How to use

Just use it like the UICollectionViewFlowLayout

let collectionView = UICollectionView(frame: CGRect.zero, collectionViewLayout: StickyCollectionViewFlowLayout())
collectionView.delegate = self

Extra Delegates

• Ask you about the specific distance you want to pin the cell with. Return nil if not a sticky element.

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, stickyDistanceAt indexPath: IndexPath) -> CGFloat?

• Asks you about the specific distance you want to pin the header with. Return nil if not a sticky element.

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, stickyDistanceForHeaderInSection section: Int) -> CGFloat?

• Ask you about the specific distance you want to pin the footer with. Return nil if not a sticky element.

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, stickyDistanceForFooterInSection section: Int) -> CGFloat?

• Notify you that the current edge insets made by the sticky elements, which could be used to update the scroll indicator insets.

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, stickyInsetsDidChange stickyInsets: UIEdgeInsets)