SALE ENDS TODAY: Save 50% on all Swift books and bundles! >>

How to create a tappable button

Paul Hudson    @twostraws   

Fully updated for Xcode 11.2

SwiftUI’s button is similar to UIButton, except it’s more flexible in terms of what content it shows and it uses a closure for its action rather than the old target/action system.

To create a button you would start with code like this:

Button(action: {
    // your action here
}) {
    Text("Button title")
}

For example, you might make a button that shows or hides some detail text when it’s tapped:

struct ContentView: View {
    @State private var showDetails = false

    var body: some View {
        VStack {
            Button(action: {
                self.showDetails.toggle()
            }) {
                Text("Show details")
            }

            if showDetails {
                Text("You should follow me on Twitter: @twostraws")
                    .font(.largeTitle)
            }
        }
    }
}

Tip: The classic thing to do when you’re learning a framework is to scatter print() calls around so you can see when things happen. If you want to try that with your button action, you should first right-click on the play button in the preview canvas and choose “Debug Preview” so that your print() calls work.

The title inside the button can be any kind of view, so you can create an image button like this:

Button(action: {
    self.showDetails.toggle()
}) {
    Image("example-image")
}

SPONSORED Instabug helps you identify and resolve severe crashes quickly. You can retrace in-app events and know exactly which line of code caused the crash along with environment details, network logs, repro steps, and the session profiler. Ask more questions or keep users up-to-date with in-app replies straight from your dashboard. Instabug takes data privacy seriously, so no one sees your data but you! See more detailed features comparison and try Instabug's crash reporting SDK for free.

Save 50% on all books and bundles

The biggest ever Hacking with Swift sale is now on, letting you save 50% on all books and bundles. Learn something new with Swift and enjoy great savings while the sale lasts!

Click here to save 50% in our Black Friday sale!

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: 4.8/5