How to check if user has valid Auth Session Firebase iOS?

Question

I wanna check if the user has still a valid session, before I present the Home View controller of my app. I use the latest Firebase API. I think if I use the legacy, I\'ll be ab

Answer 1

Solution in Swift 4

override func viewDidLoad() {
    super.viewDidLoad()
    setupLoadingControllerUI()
    checkIfUserIsSignedIn()
}

private func checkIfUserIsSignedIn() {

    Auth.auth().addStateDidChangeListener { (auth, user) in
        if user != nil {
            // user is signed in
            // go to feature controller 
        } else {
             // user is not signed in
             // go to login controller
        }
    }
}