BLACK FRIDAY: Save 50% on all our Swift books and bundles! >>

How to let users delete rows from a list

Paul Hudson    @twostraws   

Updated for Xcode 13.2

SwiftUI makes it easy to let users swipe to delete rows by attaching an onDelete(perform:) handler to some or all of your data. This handler needs to have a specific signature that accepts multiples indexes to delete, like this:

func delete(at offsets: IndexSet) {
    // delete the objects here
}

Inside there you will usually want to call Swift’s remove(atOffsets:) method to delete the requested rows from your sequence. Because SwiftUI is watching your state, any changes you make will automatically be reflected in your UI.

For example, this code creates a ContentView struct with a list of three items, then attaches an onDelete(perform:) modifier that removes any item from the list:

struct ContentView: View {
    @State private var users = ["Paul", "Taylor", "Adele"]

    var body: some View {
        NavigationView {
            List {
                ForEach(users, id: \.self) { user in
                    Text(user)
                }
                .onDelete(perform: delete)
            }
            .navigationTitle("Users")
        }
    }

    func delete(at offsets: IndexSet) {
        users.remove(atOffsets: offsets)
    }
}

Download this as an Xcode project

Three rows in an iOS list, with the middle one showing a delete button after a swipe.

If you run that code you’ll find you can swipe to delete any row in the list.

Tip: In case you were wondering, onDelete() exists as a modifier for ForEach but not for List directly. This is because lists can include static rows, which of course cannot be deleted.

Save 50% in my Black Friday sale.

SAVE 50% This Black Friday all our books and bundles are half price, so you can take your Swift knowledge further without spending big! Get the Swift Power Pack to build your iOS career faster, get the Swift Platform Pack to builds apps for macOS, watchOS, and beyond, or get the Swift Plus Pack to learn advanced design patterns, testing skills, and more.

Save 50% on all our books and bundles!

Similar solutions…

BUY OUR BOOKS
Buy Pro Swift Buy Swift Design Patterns Buy Testing Swift Buy Hacking with iOS Buy Swift Coding Challenges Buy Swift on Sundays Volume One Buy Server-Side Swift (Vapor Edition) Buy Advanced iOS Volume One Buy Advanced iOS Volume Two Buy Advanced iOS Volume Three Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with macOS Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Server-Side Swift (Kitura Edition) Buy Beyond Code

Was this page useful? Let us know!

Average rating: 4.3/5

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.