UICollectionView autosize height

Question

How do I properly resize a UICollectionView so that it fully displays its contents? I have tried many things, including setting its frame, calling reloadData an

Answer 1

Here's a way to bind the CollectionView's height via it's intrinsic size. I used it to properly size a CollectionView inside a TableView Cell (with dynamic cells height). and it works perfectly.

First, add this to your UICollectionView subclass:

override var intrinsicContentSize: CGSize {
    get {
        return self.contentSize
    }
}

Then call layoutIfNeeded() after you reload data:

reloadData()
layoutIfNeeded()