ios - 如何在 Swift 中使用 Firebase 验证用户电子邮件和密码

Question

我是 Swift 和 Firebase 的新手。我正在开发一个 IOS 应用程序。对于这个应用程序，我需要验证用户电子邮件和密码。我有一个包含用户详细信息的 Json 文件。请帮助我如何验证用户电子邮件和密码？我已经阅读了 Stackoverflow 中的几篇文章，但我被卡住了。以下是我的 Json 和 swift 代码。

Json文件:

{
   "ID": 123,
   "Membership": 1234,
   "title": "Mr.",
   "firstname": "kumar",
   "lastname": "sandeep",
   "email": "sandeepcs2005@gmail.com",
   "membrshipstatus": "Active",
   "volunteer": "Yes",
   "creationDate": "2016-12-27 "
 },

这是我的快速代码:

import UIKit
import Firebase
import FirebaseAuth



class ViewController: UIViewController {

    @IBOutlet weak var emailofUser: UITextField!
    @IBOutlet weak var passwordofUser: UITextField!
    var ref:FIRDatabaseReference! //created a variable ref of type firebase database reference
    var databaseHandle:FIRDatabaseHandle? //to handle to database listener like to stop or start it



    var postdata = [String]?()
    var postall = [[String:String]]()



    override func viewDidLoad() {
        super.viewDidLoad()



            //set firebase reference
        ref = FIRDatabase.database().reference()

        let userRef = ref.child("Hub")
        //let queryRef = userRef.queryOrderedByChild("email").queryEqualToValue("mr.stefankirsch@gmx.com")


        // Consider adding ".indexOn": "email" at /hubeindhoven-95f09 to your security rules for better performance


       userRef.queryOrderedByChild("email").queryEqualToValue("mr.sandeep@gmail.com").observeEventType(.Value, withBlock: { snapshot in

            for child in snapshot.children {

            let snap = child as! FIRDataSnapshot

                let userDict = snap.value as! [String:Any]

                let userId = userDict["ID"]
                let lastname = userDict["lastname"]
                print("\(userId!)  \(lastname!)")


            }
                    })

Answer 1

我认为您发布的 firebase json 是错误的，您是否按照标准方式添加用户(在 firebase 网络界面中)。每个用户没有唯一的 ID。例如，我添加了我的一个..

{
  "users" : {
    “UOLTzymgIyeGgNBSS0UgUs95od21” : {
      "email" : "aaaaa@gmail.com",
      "firstName" : "aaaaa",
      "lastName" : “bbbb”,
      "mobileNo" : 12122121
    },
    “CveQ13sLmMO93yHZEAP24xHA3VZ1” : {
      "email" : "bbbb@gmail.com",
      "firstName" : “bbbb”,
      "lastName" : “bbbbb”,
      "mobileNo" : 11223333
    }
  }
}

---

我已经添加了登录代码，这对我有用，希望这能解决您的问题

    override func viewDidLoad() {
        super.viewDidLoad()

        FIRAuth.auth()!.addStateDidChangeListener() { auth, user in
            if user != nil {
               self.performSegueWithIdentifier("UserDetails", sender: self)
            }
        }
   }

@IBAction func LoginPage(sender: UIButton) {
        FIRAuth.auth()!.signIn(withEmail: textFieldLoginEmail.text!,
                               password: textFieldLoginPassword.text!)
}