NEW: My new book Pro SwiftUI is out now – level up your SwiftUI skills today! >>

Adding swipe to delete and EditButton

Paul Hudson    @twostraws   

Updated for Xcode 14.2

Before we’re done with this app, let’s make a handful of smaller changes that help polish up what we have.

First, what happens if the user looks at their order and decides against one of the items? Right now we can add items but can’t delete them, but this isn’t too hard to remedy.

Just like UIKit, SwiftUI’s List view can be manipulated using IndexSet – a collection of locations in its data. So, we can add a method to OrderView that accepts an IndexSet and uses it to delete those items from our order array:

func deleteItems(at offsets: IndexSet) {
    order.items.remove(atOffsets: offsets)

To connect that to SwiftUI, we need to add an onDelete() modifier to the ForEach that shows the menu items in the order. This accepts a closure that will be executed when deletion happens, and that closure must accept an IndexSet and delete those items – basically exactly what our deleteItems(at:) method already does.

Modify the first section in the OrderView form to this:

Section {
    ForEach(order.items) { item in
        HStack {
    .onDelete(perform: deleteItems)

If the user wants to remove several items at a time, that’s also easy to do in SwiftUI. We just added the method to handle deletion, so now we can add an edit button to the navigation bar and let SwiftUI handle the rest. No, really!

Add this after the navigationTitle() modifier in OrderView:

.toolbar {

SwiftUI already knows that an edit button should toggle the table between editing and non-editing mode, while also changing title between Edit and Done – another example of us getting the system default behavior for free.

Let’s move on to a second upgrade: why do we let users press the Place Order button if they haven’t added anything to their order? This doesn’t make sense, and we shouldn’t really allow it. So, let’s not allow it!

Here’s how that part of OrderView looks right now:

Section {
    NavigationLink("Place Order") {

What we want is to disable that when there are no items in our order. Well, thanks to the power of SwiftUI we can do exactly that with the disabled() modifier, like this:

Section {
    NavigationLink("Place Order") {

If you run the app now you’ll find that you can add an item, go to the order screen, and delete that item, and Place Order will automatically become disabled as your cart becomes empty.

Much better!

Further reading

Hacking with Swift is sponsored by Play

SPONSORED Play is the first native iOS design tool created for designers and engineers. You can install Play for iOS and iPad today and sign up to check out the Beta of our macOS app with SwiftUI code export. We're also hiring engineers!

Click to learn more about Play!

Sponsor Hacking with Swift and reach the world's largest Swift community!

Similar solutions…

Buy Pro Swift Buy Pro SwiftUI 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 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 Beyond Code

Was this page useful? Let us know!

Average rating: 4.7/5

Unknown user

You are not logged in

Log in or create account

Link copied to your pasteboard.