collectionViewContentSize in iOS 10 using self-sizing cells

Question

Prior to iOS 10, I had a self-sizing table view that solely consisted of a UICollectionView with self-sizing cells using a standard UICollectionViewFlowLayout. The collection v

Answer 1

In my case, calling invalidateLayout before layout is a workaround for this issue.

In a UIViewController subclass:

override func viewWillLayoutSubviews() {
    super.viewWillLayoutSubviews()
    collectionView.collectionViewLayout.invalidateLayout()
}

or in a UIView subclass:

override func layoutSubviews() {
    super.layoutSubviews()
    collectionView.collectionViewLayout.invalidateLayout()
}