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

Customizing ProgressView with ProgressViewStyle

Paul Hudson    @twostraws   

Updated for Xcode 14.0 beta 1

SwiftUI gives us the ProgressViewStyle protocol to create custom designs for ProgressView, allowing us to read how complete the progress view and take that into account in our design.

To make a custom ProgressView style, you need to create a struct that has a makeBody() method accepting the current configuration of the view. You can then go ahead and render the progress however you want – perhaps a text percentage, perhaps a growing circle, and so on – then return your finished layout to be rendered.

To demonstrate this, here’s a custom style that creates a gauge, showing progress as a stroked circle that completes as progress ramps up:

struct GaugeProgressStyle: ProgressViewStyle {
    var strokeColor = Color.blue
    var strokeWidth = 25.0

    func makeBody(configuration: Configuration) -> some View {
        let fractionCompleted = configuration.fractionCompleted ?? 0

        return ZStack {
                .trim(from: 0, to: fractionCompleted)
                .stroke(strokeColor, style: StrokeStyle(lineWidth: strokeWidth, lineCap: .round))

// A view letting you adjust the progress with tap gestures
struct ContentView: View {
    @State private var progress = 0.2

    var body: some View {
        ProgressView(value: progress, total: 1.0)
            .frame(width: 200, height: 200)
            .onTapGesture {
                if progress < 1.0 {
                    withAnimation {
                        progress += 0.2

Download this as an Xcode project

Notice how my custom style rotates the circle anti-clockwise by 90 degrees, so the circle draws it progress from the top.

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 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.