Firebase Cookbook

How to do it...

1. Let's suppose you've created your awesome UI with all text fields and buttons and wired up the email and password IBOutlets and the IBAction login button. Let's see the code behind the awesome, quite simple password authentication process: 

      import UIKit      import Firebase      import FirebaseAuth      class EmailLoginViewController: UIViewController {          @IBOutlet weak var emailField: UITextField!          @IBOutlet weak var passwordField: UITextField!              override func viewDidLoad() {            super.viewDidLoad()          }           @IBAction func loginEmail(_ sender: Any) {            if self.emailField.text</span> == "" ||                           self.passwordField.text == "" {            //[*] Prompt an Error           let alertController = UIAlertController(title:                     "Error", message: "Please enter an email  and password. ...