IslandGuideSample

Demo app for Collection Views workshop @ Swift Island 2019

During the workshop will go through refactoring of this app from using classic UICollectionViewDataSource and UICollectionViewFlowLayout into using the new diffable data source and compositional layout.

Part 1: Diffable Data Source

Step 1. Simple data source Step 2. Creating and updating data in different ways

Part 2: Compositional layout

Step 3. Basic concepts of compositional layout Step 4. Trying out nested groups and using estimated height

Optional excercises

• Different layout for different size classes
• Section inset based on system layout margins
• Supplementary views, headers

After the workshop

WWDC 2019 has two great sessions that go in depth into the new compositional layout and diffable data source.

Advances in Collection View Layout: https://developer.apple.com/videos/play/wwdc2019/215/

Advances in UI Data Sources: https://developer.apple.com/videos/play/wwdc2019/220