Can you use Swift to replace a UIPageView with a UICollectionView?

Can we create our own implementation of a UIPageController rather than just simply implementing a UICollectionViewController? You bet we can!

Prerequisites:

• It would be beneficial to already have experience of using a UIPageController

Terminology

• UIPageViewController: A container view controller often used for tutorial landing pages or feature lists. Most Apps use it.
• UICollectionView: An object that manages an ordered collection of data items presented in a customizable layouts.

The problem (opportunity)

Instead of just using a UIPageController we can implement a UICollectionView. We need to make sure that the width of each cell is less than the screen width.

The difficulties — Paging

We will also need to make sure that we have paging disabled as we are not letting our UICollectionView clip to the normal upper-left hand corner of the view, but it’s center. To enable this we override scrollViewWillEndDragging;