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

How to create a toggle switch

Paul Hudson    @twostraws   

Updated for Xcode 13.0 beta 2

**Updated in iOS 15”

SwiftUI’s toggle lets users move between true and false states, just like UISwitch in UIKit.

For example, we could create a toggle that either shows a message or not depending on whether the toggle is enabled or not, but of course we don’t want to have to track the state of the toggle by hand – we want SwiftUI to do that for us.

Instead we should define a @State Boolean property that will be used to store the current value of our toggle. We can then use that to show or hide other views as needed.

For example:

struct ContentView: View {
    @State private var showGreeting = true

    var body: some View {
        VStack {
            Toggle("Show welcome message", isOn: $showGreeting)

            if showGreeting {
                Text("Hello World!")
            }
        }
    }
}

Download this as an Xcode project

I’ve made that code so that a text view is returned only when showGreeting is true, which means the VStack will decrease in size when showGreeting is false – it doesn’t have a second view in its stack.

If you want, you can customize the color used to create your toggle switch by using the toggleStyle() modifier. This is helpful because the Toggle view doesn’t work with accentColor(), so this is the only way to recolor it.

For example, this creates a red toggle:

struct ContentView: View {
    @State private var showGreeting = true

    var body: some View {
        VStack {
            Toggle("Show welcome message", isOn: $showGreeting)
                .toggleStyle(SwitchToggleStyle(tint: .red))

            if showGreeting {
                Text("Hello World!")
            }
        }
    }
}

Download this as an Xcode project

If you’re targeting iOS 15 or later, you can configure your switch to appear like a button by specifying .toggleStyle(.button). In this mode the button flips its tint color when its state is on:

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

    var body: some View {
        Toggle("Filter", isOn: $isOn)
            .toggleStyle(.button)
            .tint(.mint)
    }
}

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: 4.3/5

 
Unknown user

You are not logged in

Log in or create account
 

Link copied to your pasteboard.