How to change background color of a whole section in UICollectionView?

Question

In UICollectionView, I want to give the whole section a uniform background color, instead of for a single cell or for the whole collection view.

I don't see any delegate method to do that, any suggestions?

Answer 1

The new UICollectionViewCompositionalLayout introduced in iOS 13 have a property named decorationItems for adding decoration items conveniently, which you could use to add a background for the section.

let section = NSCollectionLayoutSection(group: group) section.decorationItems = [    NSCollectionLayoutDecorationItem.background(elementKind:"your identifier") ] 

Answer 2

The idea is to override UICollectionViewLayoutAttributes to add a color attribute. And then override UICollectionReusableView apply the color to the view background.

https://github.com/strawberrycode/SCSectionBackground