Apple Sign In with Swift

Apple Sign In with Swift

Almost every mobile application & web needs to authenticate or verify the user before landing on the main features of the mobile application and this will be done in many ways like phone number, email address & other third party authenticate to ensure the end-user authenticity. but this way a little bit more complete & to tricky way for the end-user. So, Apple gives us the best way to authenticate the user with minimum cost on the mobile application as well as on the web.

Let's Start

Enable Sign in 

Before proceeding further first we need to enable Sign in either through Apple Developer Account or using Xcode. After that we need to add an entitlement file to our project if we enable using Xcode then it manages automatically but if we enable using Apple Developer Account then we need to add this in our project. (Note:- you must have an apple developer account with Apple enrollment for both ways)

Also Read: Choosing The Right Data Structure In Swift

Setup & Coding

First, we need to import the Authentication Servcies provided by Apple in the respective viewcontroller/screen where we want to give a login option to the user.

import Authentication Services

add a view in your UI Design on which we need to set up Sign in with Apple button

Function to setup Apple Sign In button

func setUpSignIn() {

  let authorizationButton = ASAuthorizationAppleIDButton()  

authorizationButton.addTarget(self, action: #selector(appleRequest), for: .touchUpInside)  

authorizationButton.cornerRadius = 10 // based on your requirement

 self.yourview.addSubview(authorizationButton)

}

Function to create a request

@objc func appleRequest() {

let provider = ASAuthorizationAppleIDProvider()

let createRequest = provider.createRequest()

createRequest.requestedScopes = [.fullName, .email]

let controller = ASAuthorizationController(authorizationRequests: [createRequest])

controller.delegate = self.controller.performRequests()

}

Add a delegate to your controller ASAuthorizationControllerDelegate

function called after successful sign in 

func authorizationController(controller: ASAuthorizationController, didCompleteWithAuthorization authorization: ASAuthorization) {

if let credential = authorization.credential as? ASAuthorizationAppleIDCredential{

let userId = credential.user

let fullName = credential.fullName

let email = credential.email

print(userId, fullName, email) // use these based on your requirement & do other task

 }

}

function called when the error occurs

func authorizationController(controller: ASAuthorizationController, didCompleteWithError error: Error) {

// Handle error based on your requirement

}

Awesome!!! We complete Apple Sign In

Official Links:- 

1 https://developer.apple.com

2 https://developer.apple.com/documentation/authenticationservices/implementing_user_authentication_with_sign_in_with_apple

Thank you for reading!

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