FREE TRIAL: Accelerate your app development career with Hacking with Swift+! >>

How to create a stepper and read values from it

Paul Hudson    @twostraws   

Updated for Xcode 13.0 beta 2

SwiftUI’s Stepper control lets users select values from a range we specify, providing the same functionality as UIStepper from UIKit.

As an example, this creates a stepper bound to an age property, letting users select values in the range 0 through 130 inclusive:

struct ContentView: View {
    @State private var age = 18

    var body: some View {
        VStack {
            Stepper("Enter your age", value: $age, in: 0...130)
            Text("Your age is \(age)")
        }
    }
}

Download this as an Xcode project

Rather than binding directly to a value, you can also provide custom onIncrement and onDecrement closures to do custom work, like this:

struct ContentView: View {
    @State private var age = 18

    var body: some View {
        VStack {
            Stepper("Enter your age", onIncrement: {
                age += 1
            }, onDecrement: {
                age -= 1
            })

            Text("Your age is \(age)")
        }
    }
}

Download this as an Xcode project

Hacking with Swift is sponsored by Essential Developer

SPONSORED From August 2nd to 8th you can join a FREE crash course for mid/senior iOS devs who want to achieve an expert level of technical and practical skills – it’s the fast track to being a complete senior developer!

Save your spot now

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!

Average rating: 4.6/5

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.