I'm trying to implement Facebook login for me SwiftUI app and here's my AppDelegate.swift file:
import UIKit
import FirebaseCore
import FirebaseAuth
import FBSDKLoginKit
import FBSDKCoreKit
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, LoginButtonDelegate {
static var orientationLock = UIInterfaceOrientationMask.portrait
func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
return AppDelegate.orientationLock
}
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
FirebaseApp.configure()
return ApplicationDelegate.shared.application(application, didFinishLaunchingWithOptions: launchOptions)
}
@available(iOS 9.0, *)
func application(_ application: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any])
-> Bool {
let handled = ApplicationDelegate.shared.application(
application,
open: url,
sourceApplication: options[UIApplication.OpenURLOptionsKey.sourceApplication] as? String,
annotation: options[UIApplication.OpenURLOptionsKey.annotation]
)
return handled
}
func application(_ application: UIApplication, open url: URL, sourceApplication: String?, annotation: Any) -> Bool {
return ApplicationDelegate.shared.application(
application,
open: url
)
}
func loginButton(_ loginButton: FBLoginButton, didCompleteWith result: LoginManagerLoginResult?, error: Error?) {
print("FB Login Button function")
if let error = error {
print("ERROR1: \(error.localizedDescription)")
return
}
let credential = FacebookAuthProvider.credential(withAccessToken: AccessToken.current!.tokenString)
Auth.auth().signIn(with: credential) { (res, err) in
if err != nil {
print("ERROR2: \(String(describing: err?.localizedDescription))")
return
}
print("email: \(String(describing: res?.user.email))")
print("name: \(String(describing: res?.user.displayName))")
}
}
func loginButtonDidLogOut(_ loginButton: FBLoginButton) {
print("Did logout")
}
Ok, here comes my SwiftUI code:
import SwiftUI
import FirebaseCore
import FBSDKLoginKit
struct LoginView: View {
@EnvironmentObject var thisSession: CurrentSession
@ObservedObject var mainData = MainViewModel()
var body: some View {
VStack {
facebook().frame(width: 240, height: 50)
}
}
}
struct LoginView_Previews: PreviewProvider {
static var previews: some View {
LoginView().environmentObject(CurrentSession())
}
}
struct facebook : UIViewRepresentable {
func makeUIView(context: UIViewRepresentableContext<facebook>) -> FBLoginButton {
let button = FBLoginButton()
//button.delegate = self
return button
}
func updateUIView(_ uiView: FBLoginButton, context: UIViewRepresentableContext<facebook>) {
print("FBButton updateUIView called")
}
}
I can see the button on my LoginView and i even can login/logout (the text on the button changes respectively from "Login" to "Log out"... But the code from "loginButton" and "loginButtonDidLogOut" is never executed. I was supposed to see some messages in my debug console but this code just is not called.
Am I doing something wrong? Seems like i forgot to set some delegate or i should call Auth.auth() somewhere else instead of loginButton() function..
Your AppDelegate
conforms to LoginButtonDelegate
, so you only need to set the delegate within the makeUIView
:
func makeUIView(context: UIViewRepresentableContext<facebook>) -> FBLoginButton {
let button = FBLoginButton()
button.delegate = UIApplication.shared.delegate as! AppDelegate
return button
}