How to adjust height of UICollectionView to be the height of the content size of the UICollectionView?

Question

I would like the UICollectionView (The red one) to shrink to the height of the content size in this case UICollectionViewCells(the yellow ones) because there is a lot of emp

Answer 1

Get the height of the cell. Something like this

let cellHeight = cell.frame.height

Get the origin of the collection view

let cvOrigin = collectionView.frame.origin

Get the width of the collection view

let cvWidth = collectionView.bounds.width

Set the frame of the content view

collection.frame = CGRect(x: cvOrigin.x, y: cvOrigin.y, width: cvWidth, height: cellHeight )