ios - 如何在不重新验证的情况下更改 firebase 电子邮件

Question

我在我的应用中实现了一个按钮，允许用户使用 Firebase 更改他们的电子邮件。

 @IBAction func resetEmail(_ sender: Any) {
        let alertController = UIAlertController(title: "Change Email", message: "", preferredStyle: .alert)
        alertController.addTextField { (textField : UITextField!) -> Void in
            textField.placeholder = "Enter New Email Address"

              let saveAction = UIAlertAction(title: "Save", style: .default, handler: { (action : UIAlertAction!) -> Void in

            //Reset Email

                let currentUser = Auth.auth().currentUser
            if Auth.auth().currentUser != nil{
                currentUser?.updateEmail(to: textField.text!) { error in
                    if let error = error {
                        print(error)
                    } else {
                        print("CHANGED")
                        let user = Auth.auth().currentUser
                        let name = user?.displayName!
                        let ref = Database.database().reference().child("main").child("users_sen").child(name!).child("email")
                        ref.setValue(textField.text!)

                    }
                }
            }

            })


        alertController.addAction(saveAction)
        }
        self.present(alertController, animated: true, completion: {
            alertController.view.superview?.isUserInteractionEnabled = true
            alertController.view.superview?.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(self.alertClose(gesture:))))

        })
    }

但是，当我运行它并尝试更改电子邮件时，它给我这个错误:

UserInfo={NSLocalizedDescription=This operation is sensitive and requires 
recent authentication. Log in again before retrying this request.

并告诉我重新签名以更改电子邮件。我该如何避免这种情况？如何在不重新登录的情况下更改电子邮件？

这是我更改密码的方式:

  // Password updated.
             let currentUser = Auth.auth().currentUser
            currentUser?.updatePassword(to: textField.text!) { error in
                if let error = error {

                } else {
                    // Password updated.
                    print("success")

                }
            }

            let userEmail = Auth.auth().currentUser?.email
            self.currentPassword = textField.text!

            let credential = EmailAuthProvider.credential(withEmail: userEmail!, password: textField.text!)

            currentUser?.reauthenticate(with: credential) { error in
                if let error = error {
                    // An error happened.
                } else {
                    // User re-authenticated.
                }
            }

Answer 1

基于 Firebase 的 documentation ，您需要在执行此类操作时重新验证用户。

Re-authenticate a user Some security-sensitive actions—such as deleting an account, setting a primary email address, and changing a password—require that the user has recently signed in. If you perform one of these actions, and the user signed in too long ago, the action fails with an error. When this happens, re-authenticate the user by getting new sign-in credentials from the user and passing the credentials to reauthenticateWithCredential.

let user = Auth.auth().currentUser
let credential = EmailAuthProvider.credential(withEmail: "email", password: "password")

user?.reauthenticate(with: credential)
{ error in
   if let error = error {
      // An error happened.
   } else {
      // User re-authenticated.
      user?.updateEmail(to: "newemail")
      { error in

      }
   }
}