This is a small app that shows yo how to use simple
UICollectionViewFlowLayoutsublcasses and transition between them. You can get a lot of really nice layouts without any further modification than
Demonstrates: - Custom
UICollectionViewFlowLayoutsubclasses. - How to implement
UICollectionViewCellsubclasses. - How to change layouts (with animation). - How to set up a collection view without a
More notes here.
See a Swift implementation of this project here