UICollectionView cell dynamic height with custom multicolumn layout

This project provide example how to implement multicolumn multilie layout for UICollectionView

Requirements

• Swift 3, Xcode 8.2+, AutoLayout
• Minimum iOS version is 8.2

For Swift 2.3 see related branch

How to use

This is example project and you should not care most of the sources.

You only interested in DynamicHeightLayout.swift as layout implementation and in MainCVC.swift and NewsCell.swift as usage example.

1. Drop DynamicHeightLayout.swift into your project

2. Implement DynamicHeightLayoutDelegate

3. Set DynamicHeightLayout as custom layout class for your collection view controller in storyboard or from code

4. Provide delegate for DynamicHeightLayout

   override func viewDidLoad() {
       super.viewDidLoad()
   
       let layout = collectionViewLayout as! DynamicHeightLayout
       layout.delegate = self
   }
   

5. Calculate height of each cell and return it when DynamicHeightLayoutDelegate will ask

Tips

Look at the MainCVC.swift for setup example

Example how to calculate height for cell with multilined labels in NewCell.swift

Perfomance

It should be fast, as soon as DynamicHeightLayout fill out its cache for UICollectionViewLayoutAttributes.