Question

想知道是否有人可以帮助我。我刚刚完成了我的注册页面，用户可以在其中创建一个帐户。我现在遇到的问题是，在登录视图中，用户只需按下“登录”按钮，即使他们的电子邮件和密码不正确，也会将其重定向到下一个视图。

class LoginViewController: UIViewController, GIDSignInUIDelegate {
@IBOutlet var userEmailLoginField: UITextField!
@IBOutlet var userPasswordLoginField: UITextField!

@IBAction func loginButton(_: Any) {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let tabBarController = storyboard.instantiateViewController(withIdentifier: "TabBarController") as! UITabBarController
let appDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.window?.rootViewController = tabBarController

guard let email = userEmailLoginField.text, let password = userPasswordLoginField.text else { return }
FIRAuth.auth()?.signIn(withEmail: email, password: password) { (user, error) in
if let error = error {
    print(error.localizedDescription)
    return
    }
}
}

Answer 1

尝试移动实例化新视图控制器的代码。在下面的示例中，我将其移动到仅在使用Firebase进行身份验证时没有错误时才会运行。

class LoginViewController: UIViewController, GIDSignInUIDelegate {
    @IBOutlet var userEmailLoginField: UITextField!
    @IBOutlet var userPasswordLoginField: UITextField!

    @IBAction func loginButton(_: Any) {

      guard let email = userEmailLoginField.text, let password = userPasswordLoginField.text else { return }
      FIRAuth.auth()?.signIn(withEmail: email, password: password) { (user, error) in
      if let error = error {
        print(error.localizedDescription)
        return
      } else {
        let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let tabBarController = storyboard.instantiateViewController(withIdentifier: "TabBarController") as! UITabBarController
        let appDelegate = UIApplication.shared.delegate as! AppDelegate
        appDelegate.window?.rootViewController = tabBarController
     }
    }
   }

如果用户的电子邮件和密码正确，则切换视图会出现问

1 个答案: