小编Won*_*r A的帖子

我正在使用 firebase 登录，我需要知道如何在注销之前保持登录状态。我听说过 UserDeafults，但我不确定如何使用它。这是我的登录视图控制器：

import FirebaseAuth
import FirebaseFirestore
import Firebase
import FirebaseAnalytics
import UIKit


class LoginViewController: UIViewController {



    @IBOutlet weak var emailTextField: UITextField!

    @IBOutlet weak var passwordTextField: UITextField!


    @IBOutlet weak var loginButton: UIButton!


    @IBOutlet weak var errorLabel: UILabel!


    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.

        setUpElements()

        if Auth.auth().currentUser != nil {
           // User is signed in.
           DispatchQueue.main.async {
              self.presentHomeViewController()
           }
        } else {
          // No user is signed in.
        }

    }



    func setUpElements() …