Common SwiftUI List Error - Why Items Need to Be Identifiable and How to Fix It

If you've ever wanted to list some strings or ints or something simple in SwiftUI, you know this error too well :)

Well here's a video explaining why that error is showing up and how to fix it. I've even included a bonus tip on how to make objects for a list easier on yourself!

I learned about Lists from Paul's website and custom initializers from Dave and the CocoaHeads.

import SwiftUI

struct ContentView: View {
    
    let foods = [Food(name: "Pizza"), Food(name: "Cheeseburger"), Food(name: "Sushi")]
    
    var body: some View {
        List(foods) { food in
            Text(food.name)
        }
    }
}

struct Food: Identifiable {
    var id: UUID
    var name: String
    
    init(name: String) {
        id = UUID()
        self.name = name
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

Here's some courses you might like:

• Build Your First iPhone App - iOS 14 Apps Using Swift 5
• SwiftUI Apps on All Devices - iPhone, iPad, Mac, Watch & TV
• Noob to App Store - iPhone Apps with Swift, SwiftUI & iOS 15
• Create Apps on Your iPad - Swift Playgrounds for Beginners
• iPhone Apps for Complete Beginners - Swift, SwiftUI & iOS17