How to enable zoom for UICollectionView [duplicate]

Answer 1

I am not sure whether I got your question in correct way or not, but I think you might want to check these links:-

1. zoom entire UICollectionView - It also has a link to Sample code for UICollectionView. You might be interested in checking it.
2. Adding pinch zoom to a UICollectionView.
3. Make UICollectionView zoomable?

Hope this will help you.

Answer 2

If you're looking for the iOS 7 Photos application type of pinching + transition, maybe take a look at this question here: UICollectionView interactive layout transition using iOS 7 APIs