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iOS Quickstart (Beta)

Warning

The Clerk iOS SDK is currently in beta. It is not yet recommended for production use.

You will learn the following:

  • Create a new Xcode project
  • Install the Clerk iOS SDK
  • Configure Clerk with your publishable key
  • Use Clerk to enable users to sign in and out of your application

Before you start

Create an iOS Project

To get started using Clerk with iOS, create a new project in Xcode. Select SwiftUI as your interface and Swift as your language. See the Xcode documentation for more information.

Install the Clerk iOS SDK

Follow the Swift Package Manager instructions to install Clerk as a dependency. When prompted for the package URL, enter https://github.com/clerk/clerk-ios. Be sure to add the package to your target.

Load Clerk

To use Clerk in your app, you must first configure and load Clerk.

  • Inside your new project in Xcode, open your @main app file.
  • Import ClerkSDK.
  • Add a new variable clerk marked with the @ObservedObject property wrapper.
  • Replace ContentView() with the below ZStack.
  • Attach a .task modifier to the new ZStack. In the body of the task, configure clerk with your publishable key, and then load clerk. You can get your publishable key from the API Keys page of the Clerk Dashboard.
ClerkQuickstartApp.swift
import SwiftUI
import ClerkSDK

@main
struct ClerkQuickstartApp: App {
  @ObservedObject private var clerk = Clerk.shared

  var body: some Scene {
    WindowGroup {
      ZStack {
        if clerk.loadingState == .notLoaded {
          ProgressView()
        } else {
          ContentView()
        }
      }
      .task {
        clerk.configure(publishableKey: "YOUR_PUBLISHABLE_KEY")
        try? await clerk.load()
      }
    }
  }
}

Conditionally render content

To render content based on whether a user is authenticated or not:

  • Open your ContentView file.
  • Import ClerkSDK.
  • Add a new variable clerk marked with the @ObservedObject property wrapper.
  • Replace the content of the view body with a conditional that checks for a clerk.user.
ContentView.swift
import SwiftUI
import ClerkSDK

struct ContentView: View {
  @ObservedObject private var clerk = Clerk.shared

  var body: some View {
    VStack {
      if let user = clerk.user {
        Text("Hello, \(user.id)")
      } else {
        Text("You are signed out")
      }
    }
  }
}

Create views for sign-up and sign-in

SignUpView

The following example creates a SignUpView that allows users to sign up using their email address and password, and sends an email verification code to confirm their email address.

SignUpView.swift
import SwiftUI
import ClerkSDK

struct SignUpView: View {
  @State private var email = ""
  @State private var password = ""
  @State private var code = ""
  @State private var isVerifying = false

  var body: some View {
    VStack {
      Text("Sign Up")
      if isVerifying {
        TextField("Code", text: $code)
        Button("Verify") {
          Task { await verify(code: code) }
        }
      } else {
        TextField("Email", text: $email)
        SecureField("Password", text: $password)
        Button("Continue") {
          Task { await signUp(email: email, password: password) }
        }
      }
    }
    .padding()
  }
}

extension SignUpView {

  func signUp(email: String, password: String) async {
    do {
      let signUp = try await SignUp.create(
        strategy: .standard(emailAddress: email, password: password)
      )

      try await signUp.prepareVerification(strategy: .emailCode)

      isVerifying = true
    } catch {
      dump(error)
    }
  }

  func verify(code: String) async {
    do {
      guard let signUp = Clerk.shared.client?.signUp else {
        isVerifying = false
        return
      }

      try await signUp.attemptVerification(.emailCode(code: code))
    } catch {
      dump(error)
    }
  }

}

SignInView

The following example creates a SignInView that allows users to sign in using their email address and password.

SignInView.swift
import SwiftUI
import ClerkSDK

struct SignInView: View {
  @State private var email = ""
  @State private var password = ""

  var body: some View {
    VStack {
      Text("Sign In")
      TextField("Email", text: $email)
      SecureField("Password", text: $password)
      Button("Continue") {
        Task { await submit(email: email, password: password) }
      }
    }
    .padding()
  }
}

extension SignInView {

  func submit(email: String, password: String) async {
    do {
      try await SignIn.create(
        strategy: .identifier(email, password: password)
      )
    } catch {
      dump(error)
    }
  }

}

SignUpOrSignInView

Finally, create a SignUpOrSignInView container view that allows users to switch between sign up and sign in.

SignUporSignInView.swift
import SwiftUI

struct SignUpOrSignInView: View {
  @State private var isSignUp = true

  var body: some View {
    ScrollView {
      if isSignUp {
        SignUpView()
      } else {
        SignInView()
      }

      Button {
        isSignUp.toggle()
      } label: {
        if isSignUp {
          Text("Already have an account? Sign In")
        } else {
          Text("Don't have an account? Sign Up")
        }
      }
      .padding()
    }
  }
}

Allow users to sign up or sign in

Go back to your ContentView and render your newly created SignUpOrSignInView when the user isn't signed in.

ContentView.swift
import SwiftUI
import ClerkSDK

struct ContentView: View {
  @ObservedObject private var clerk = Clerk.shared

  var body: some View {
    VStack {
      if let user = clerk.user {
        Text("Hello, \(user.id)")
      } else {
        SignUpOrSignInView()
      }
    }
  }
}

Allow users to sign out

Finally, provide users with a way to sign out of your app:

  • Open your ContentView.
  • Add a button that ends a user's session.
ContentView.swift
import SwiftUI
import ClerkSDK

struct ContentView: View {
  @ObservedObject private var clerk = Clerk.shared

  var body: some View {
    VStack {
      if let user = clerk.user {
        Text("Hello, \(user.id)")
        Button("Sign Out") {
          Task { try? await clerk.signOut() }
        }
      } else {
        SignUpOrSignInView()
      }
    }
  }
}

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