CollectionViewFlowLayout's collectionViewContentSize() in swift

I cannot retrieve contentSize from flow layout with the following code

let contentSize: CGSize = self.collectionView?.collectionViewLayout.collectionViewContentSize()!

Instead I get error:

Could not find member 'collectionViewContentSize'

If I print value it returns properly:

println("content size \(self.collectionView?.collectionViewLayout.collectionViewContentSize())")

Is this swift compiler issue?


You must cast collectionViewLayout to specific layout. If you use UICollectionViewFlowLayout it will look something like this:

if let flow = collectionMain.collectionViewLayout as? UICollectionViewFlowLayout
    let contentSize: CGSize = flow.collectionViewContentSize()

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