WWDC22 SALE: Save 50% on all my Swift books and bundles! >>

How to let the user paste data into your app

Paul Hudson    @twostraws   

Updated for Xcode 14.0 beta 1

New in iOS 16

SwiftUI has a dedicated PasteButton view that lets us receive any kind of data that conforms to the Transferable protocol, such as String and Data.

For example, we could let the user type into a text field, or add a PasteButton to update the text directly:

struct ContentView: View {
    @State private var username = "@twostraws"

    var body: some View {
        VStack {
            TextField("Username", text: $username)
                .textFieldStyle(.roundedBorder)

            PasteButton(payloadType: String.self) { strings in
                guard let first = strings.first else { return }
                username = first
            }
            .buttonBorderShape(.capsule)
        }
        .padding()
    }
}

Download this as an Xcode project

Notice how we specify String.self as the payload type, but the input into the closure is an array of strings.

Given that TextField has its own cut, copy, and paste menu options, I think PasteButton will be much more useful in places where you aren’t handling text, e.g. when the user wants to paste a picture into your app.

Hacking with Swift is sponsored by RevenueCat

SPONSORED You know StoreKit, but you don’t want to do StoreKit. RevenueCat makes it easy to deploy, manage, and analyze in-app subscriptions on iOS and Android so you can focus on building your app.

Explore the docs

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

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!

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.