Firebase iOS在创建用户时返回

Question

我很难弄清楚为什么firebase会返回错误代码 17011 （根据Firebase文档是用户未找到错误），创建用户甚至是电子邮件和密码时删除firebase控制台的数据库和身份验证部分中的所有用户之后。虽然用户已成功创建并添加到firebase实时数据库，但错误代码仍会弹出。以下是在控制台上打印出的完整错误：

  

可选（错误域= FIRAuthErrorDomain代码= 17011“没有与此标识符对应的用户记录。用户可能已被删除。”UserInfo = {NSLocalizedDescription =没有与此标识符对应的用户记录。用户可能有已被删除。，error_name = ERROR_USER_NOT_FOUND}）！

完整的课程：

import UIKit
import Firebase

class LoginViewController: UIViewController , UITextFieldDelegate {


@IBOutlet weak var emailField: RoundedCornerTextField!
@IBOutlet weak var passwordField: RoundedCornerTextField!
@IBOutlet weak var segmentedControl: UISegmentedControl!
override func viewDidLoad() {
super.viewDidLoad()

emailField.delegate = self
passwordField.delegate = self

}

@IBAction func signupLoginBtnTapped(_ sender: Any) {

if emailField.text != nil && passwordField.text != nil {
if let email = emailField.text, let password = passwordField.text {

Auth.auth().signIn(withEmail: email, password: password, completion: { (user, error) in //Sign in

  if error == nil {

      if let user = user {

          if self.segmentedControl.selectedSegmentIndex == 0 {

              let userData = ["provider": user.providerID] as [String: Any]

              DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData)

          } else {   

              let userData = ["provider": user.providerID] as [String: Any]

              DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData)
          }
      }

      print ("Firebase: Success authentication with Firebase.")

      self.dismiss(animated: true, completion: nil)

  } else {
   if let errorCode = AuthErrorCode(rawValue: error!._code){
switch errorCode {
 case.wrongPassword:
        self.showAlert("You entered an invalid password please try again!")
    default:
            self.showAlert("Unexpected error \(errorCode.rawValue) please try again!")
          print("Creating user error 1 \(error.debugDescription)!")
       }
   }

  Auth.auth().createUser(withEmail: email, password: password, completion: { (user, error) in //creating a user

      if error == nil {
          if let user = user {
              if self.segmentedControl.selectedSegmentIndex == 0 { 
                  let userData = ["provider": user.providerID] as [String: Any]
                  DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData)
              } else { 
                  let userData = ["provider": user.providerID] as [String: Any]
                  DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData, isDriver: true)
              }
      } else {
              if let errorCode = AuthErrorCode(rawValue: error!._code) {
                  switch errorCode {
                  case .invalidEmail:
                      self.showAlert("You entered an invalid email!")
                  case .userNotFound:
                      self.showAlert("User not found")
                  default:
                      print("Creating user error 2 \(error.debugDescription)!")
                      self.showAlert("Unexpected error \(errorCode.rawValue) please try again!")
                  }
              }
          }
          print("Firebase: user created successfully")
          self.dismiss(animated: true, completion: nil)
             }
           })
         }
      })
   }
 }
}

}

发生错误的代码块：

Auth.auth().signIn(withEmail: email, password: password, completion: { (user, error) in 
if error == nil {
    if let user = user {
        if self.segmentedControl.selectedSegmentIndex == 0 {
            let userData = ["provider": user.providerID] as [String: Any]
            DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData)   
        }   
        else { 
                let userData = ["provider": user.providerID]
                DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData, isDriver: true)
             }
    }

    print ("Firebase: Success authentication with Firebase.")

    self.dismiss(animated: true, completion: nil)

}     
else {

    if let errorCode = AuthErrorCode(rawValue: error!._code){   
       switch errorCode {
            case.wrongPassword:
                self.showAlert("You entered an invalid password please try again!")
            default:
                self.showAlert("Unexpected error \(errorCode.rawValue) please try again!")
                print("Creating user error \(error.debugDescription)!")
       }
    }

    Auth.auth().createUser(withEmail: email, password: password, completion: { (user, error) in 
       if error == nil {
           if let user = user { 
               if self.segmentedControl.selectedSegmentIndex == 0 { 
                   let userData = ["provider": user.providerID] as [String: Any]
                   DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData)   
                } 
               else { 
                   let userData = ["provider": user.providerID]
                   DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData, isDriver: true)
                }

            } 
            else {
               if let errorCode = AuthErrorCode(rawValue: error!._code) {
                   switch errorCode { 
                        case .invalidEmail:
                            self.showAlert("You entered an invalid email!")
                        case .userNotFound:
                            self.showAlert("User not found")
                        default:
                            print("Creating user error \(error.debugDescription)!")
                            self.showAlert("Unexpected error \(errorCode.rawValue) please try again!")
                    }
               }
           }
           self.dismiss(animated: true, completion: nil)
       }

错误发生在下面的Auth.auth（）。signIn else块中：

Auth.auth().createUser(withEmail: email, password: password, completion: { (user, error) in 
   if error == nil {
       if let user = user { 
           if self.segmentedControl.selectedSegmentIndex == 0 { 
               let userData = ["provider": user.providerID] as [String: Any]
               DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData)   
            } 
           else { 
               let userData = ["provider": user.providerID]
               DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData, isDriver: true)
            }

        } 
        else {
           if let errorCode = AuthErrorCode(rawValue: error!._code) {
               switch errorCode { 
                    case .invalidEmail:
                        self.showAlert("You entered an invalid email!")
                    case .userNotFound:
                        self.showAlert("User not found")
                    default:
                        print("Creating user error \(error.debugDescription)!")
                        self.showAlert("Unexpected error \(errorCode.rawValue) please try again!")
                }
           }
       }
       self.dismiss(animated: true, completion: nil)
   }

有人能提供解决方案吗？

P.S是的我将firebase导入项目并且pod是最新的，并且启用了firebase控制台的身份验证部分中的电子邮件/密码登录方法。

Answer 1

在查看代码一段时间之后，我发布了在进入createUser（）函数之前应该处理所有处理登录的错误。由于Firebase Auth中存在.userNotfound错误。在case.userNotFound中调用createUser（）解决了如下所示的问题：

Auth.auth().signIn(withEmail: email, password: password, completion: { (user, error) in

        if error == nil {
            if let user = user {
                if self.segmentedControl.selectedSegmentIndex == 0 {
                    let userData = ["provider": user.providerID] as [String: Any]
                    DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData)
                } else {
                    let userData = ["provider": user.providerID]
                    DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData, isDriver: true)
                }
            }

            print ("Firebase: Success authentication with Firebase.")

            self.dismiss(animated: true, completion: nil)

        } else {

            if let errorCode = AuthErrorCode(rawValue: error!._code) {

                switch errorCode {

                case.wrongPassword:
                    self.showAlert("You entered an invalid password please try again!")

                case.userNotFound:
                    Auth.auth().createUser(withEmail: email, password: password, completion: { (user, error) in
                        if error == nil {
                            if let user = user {
                                if self.segmentedControl.selectedSegmentIndex == 0 {
                                    let userData = ["provider": user.providerID] as [String: Any]
                                    DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData)
                                } else {
                                    let userData = ["provider": user.providerID]
                                    DataService.instance.createFirebaseDBUser(uid: user.uid, userData: userData, isDriver: true)
                                }

                            } else {
                                if let errorCode = AuthErrorCode(rawValue: error!._code) {

                                    switch errorCode {

                                    case .invalidEmail:
                                        self.showAlert("You entered an invalid email!")

                                    case .userNotFound:
                                        self.showAlert("User not found")

                                    default:
                                        print("Creating user error 2 \(error.debugDescription)!")
                                        self.showAlert("Unexpected error \(errorCode.rawValue) please try again!")
                                    }
                                }
                            }

                            self.dismiss(animated: true, completion: nil)
                        }
                    })

                default:
                    self.showAlert("Unexpected error \(errorCode.rawValue) please try again!")
                    print("Creating user error \(error.debugDescription)!")
                }
            }
        }
 })