How to set UICollectionViewDelegateFlowLayout?

Question

A UIViewController maintains a reference to a UICollectionView. The controller should modify the built-in flow layout using the UICollectionViewDelegateFlowLayout.

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Answer 1

Just self.collectionView.delegate = self;. Note that UICollectionViewDelegateFlowLayout inherits from UICollectionViewDelegate.

I admit it caught me off guard at first.

Oh and this will only work if self.collectionView.collectionViewLayout is actually set to your flow layout. (or set with initWithFrame:collectionViewLayout:)