Firebase AuthUI returns nil for display name and email in Sign in with Apple - swift

Question

When I try to sign in with Apple, Firebase AuthUI returns nil for display name and email. Here's my code
lazy var authUI: FUIAuth? = {
let UIAuth = FUIAuth.defaultAuthUI()
UIAuth?.delegate = self
UIAuth?.shouldHideCancelButton = true
return UIAuth
}()
func presentLogin(){
// providers
var providers: [FUIAuthProvider] = [
FUIEmailAuth(),
FUIGoogleAuth(),
FUIFacebookAuth()
]
if #available(iOS 13.0, *) {
let appleProvider = FUIOAuth.appleAuthProvider()
providers.append(appleProvider)
}
self.authUI?.providers = providers
let loginController = self.authUI!.authViewController()
present(loginController, animated: true, completion: nil)
}
func authUI(_ authUI: FUIAuth, didSignInWith authDataResult: AuthDataResult?, error: Error?) {
print(authDataResult?.user.displayName)
}

Answer 1

I had the same issue! I don't have the Apple sign in, but even just with Firebase it would show nil for this information. My issue was that I hadn't properly set up the data for Firebase and Xcode to talk. You code seems right, but it looks like you might be missing a few things..? You're more experienced than me, so I might be wrong! But here's my code...
// SIGN UP FUNCTION, first name, last name, email, password
let db = Database.database().reference()
func signUp(firstName: String, lastName: String, email: String, password: String, completion: #escaping (LocalUser?, Error?) -> Void) {
let usersRef = db.child("users")
Auth.auth().createUser(withEmail: email, password: password) {[weak self] (result, error) in
if let uid = result?.user.uid {
let newUser: [String: String] = ["firstName": firstName, "lastName": lastName, "email": email]
let newLocalUser = LocalUser(firstName: firstName, lastName: lastName, email: email)
usersRef.child(uid).setValue(newUser){(error: Error?, ref: DatabaseReference) in
completion(newLocalUser, error)
}
} else {
completion(nil, nil)
}
}
}
// SIGN IN FUNCTION, email, password
func signIn(email: String, password: String, completion: #escaping (LocalUser?, Error?) -> Void) {
let usersRef = db.child("users")
Auth.auth().signIn(withEmail: email, password: password) { [weak self]
(result, error) in
guard let user = result?.user else {
completion(nil, error)
return
}
let uid = user.uid
usersRef.child(uid).observeSingleEvent(of: .value) { (snapshot) in
let value = snapshot.value as? [String: Any]
if let user = value {
let userObject = LocalUser.makeObjectFrom(user)
newUser = userObject
completion(userObject, nil)
} else {
completion(nil, error)
}
}
}
}
I didn't see a reference to the db and uid, so this may help!