NEW! Master Swift design patterns with my latest book! >>

How to register a cell for UICollectionView reuse

Paul Hudson       @twostraws

If you're working entirely in code, you can register a UICollectionViewCell subclass for use with your collection view, so that new cells are dequeued and re-use automatically by the system.

Here's the most basic form of this technique:

collectionView.register(UICollectionViewCell.self, forCellWithReuseIdentifier: "Cell")

That registers a basic collection view cell, which you can then customize in code if you want to. You can then dequeue a cell with this:

func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "Cell", for: indexPath)
    return cell
}

If a cell doesn't already exist that can be re-used, a new one will be created automatically.

As you might imagine, you will most of the time want to create your own custom UICollectionViewCell subclass and use that instead, but the code is the same – just use your class name instead.

If you're working with Interface Builder, all this work is done for you by creating prototype cells.

Available from iOS 6.0

Did this solution work for you? Please pass it on!

Other people are reading…

About the Swift Knowledge Base

This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.

Learn Server-Side Swift now!

Take your Swift code to the server and become a full-stack developer with my latest book: Server-Side Swift!

MASTER SWIFT NOW
Buy Practical iOS 12 Buy Pro Swift Buy Swift Design Patterns Buy Practical iOS 11 Buy Swift Coding Challenges Buy Server-Side Swift (Vapor Edition) Buy Server-Side Swift (Kitura Edition) Buy Hacking with macOS Buy Advanced iOS Volume One Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with Swift Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Beyond Code

Was this page useful? Let me know!

Average rating: 5.0/5

Click here to visit the Hacking with Swift store >>