Reload UICollectionView header or footer?

Question

I have some data that is fetched in another thread that updates a UICollectionView\'s header. However, I\'ve not found an efficient way of reloading a supplementary view suc

Answer 1

let headerView = collectionView.visibleSupplementaryViews(ofKind: UICollectionView.elementKindSectionHeader)[0] as! UICollectionReusableView

I've used above method to get current header, and successfully updated subviews on it.