Question

我正在尝试安装来自"drop-in" authentication solution的Firebase，它会自动通过Google，Facebook或电子邮件/密码屏幕向您的应用用户发送身份验证。

我的问题是，Firebase提供的代码似乎是使用Objective C的旧iOS语言而不是Swift，并且某些教学Swift代码行显得过时，我找不到新行I我应该使用。

我正在构建我的代码主要来自Github插件解决方案的这部分说明：FirebaseUI Authentication。

这导致了以下代码，其中一些我不得不猜测，因为Xcode无法识别.authUI()中的let authUI = FIRAuthUI.authUI()。该应用程序不会崩溃，但它根本不会启动身份验证过程。这只是一个空白屏幕。

import UIKit
import Firebase
import FirebaseAuth
import FirebaseDatabaseUI
import FirebaseAuthUI
import FirebaseGoogleAuthUI
import FirebaseFacebookAuthUI
import FBSDKCoreKit
import FBSDKLoginKit

class LoginController: UIViewController, FIRAuthUIDelegate {

var db = FIRDatabaseReference.init()
var kFacebookAppID = "15839856152xxxxx"
var kGoogleClientID = "9042861xxxxx-6qq4gmeos07gpgmgt54ospv3fvpg0724.apps.googleusercontent.com"

override func viewDidLoad() {
    super.viewDidLoad()

    //FIRApp.configure()
    let authUI = FIRAuthUI.defaultAuthUI()

    let facebookAuthUI = FIRFacebookAuthUI(appID: kFacebookAppID)
    let googleAuthUI = FIRGoogleAuthUI(clientID: kGoogleClientID)
    //let emailAuthUI = FIREmailPasswordAuthProvider

    authUI?.providers = [facebookAuthUI, googleAuthUI]

    // Present the auth view controller and then implement the sign in callback.
    let authViewController = authUI
    authUI?.authViewController()

}

func authUI(authUI: FIRAuthUI, didSignInWithUser user: FIRUser?, error: NSError?) {
    if error != nil {
        //Problem signing in
    }else {
        //User is in!
    }
}

func application(app: UIApplication, openURL url: NSURL, options: [String: AnyObject]) -> Bool {
    let sourceApplication = options[UIApplicationOpenURLOptionsSourceApplicationKey] as! String
    return FIRAuthUI.defaultAuthUI()!.handleOpenURL(url, sourceApplication: sourceApplication ?? "") ?? false
}

}

作为一方，我将FIRApp.configure()放在AppDelegate类的“didFinishLaunchingWithOptions”函数中，并且我还将FIRApp.configure()分隔为AppDelegate类中的覆盖，如下所示。似乎没有任何帮助。我花了大约4天试图解决这个问题。为Web和Android实现它只需要几个小时。

override init() {
    super.init()
    FIRApp.configure()
    //FIRDatabase.database().persistenceEnabled = true
}

Answer 1

我终于想出了如何做到这一点！我创建了一个video和GIST来展示如何操作，但我也尝试在此处展示它。

首先，我通过点击＆＃34; Apple App Store更新了Xcode到版本8，＆＃34;找到Xcode，然后点击＆＃34;更新。＆＃34;这需要一段时间才能下载。

其次，我通过在＆＃34; didFinishLaunchingWithOptions＆＃34;中添加FIRApp.configure()来更新AppDelegate.swift。功能

第三，我将以下代码添加到AppDelegate.swift文件中：

func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool {

    let handled = FBSDKApplicationDelegate.sharedInstance().application(app, open: url, sourceApplication: options[UIApplicationOpenURLOptionsKey.sourceApplication] as! String, annotation: options[UIApplicationOpenURLOptionsKey.annotation])

    return handled || GIDSignIn.sharedInstance().handle(
        url,
        sourceApplication: options[UIApplicationOpenURLOptionsKey.sourceApplication] as! String,
        annotation: options[UIApplicationOpenURLOptionsKey.annotation])
}

第四，我将我的ViewController.swift文件更新为此（确保将自己的Facebook保密）：

//  ViewController.swift
//  Bizzy Books
//
//  Created by Brad Caldwell on 9/23/16.
//  Copyright © 2016 Caldwell Contracting LLC. All rights reserved.
//

import UIKit
import Firebase
import FirebaseAuthUI
import FirebaseDatabaseUI
import FirebaseGoogleAuthUI
import FirebaseFacebookAuthUI
import FBSDKCoreKit
import FBSDKLoginKit

class ViewController: UIViewController, FIRAuthUIDelegate {

//var db = FIRDatabaseReference.init()
var kFacebookAppID = "PLACE YOUR 16-DIGIT FACEBOOK SECRET HERE (FOUND IN FIREBASE CONSOLE UNDER AUTHENTICATION)"

override func viewDidLoad() {
    super.viewDidLoad()

    //FIRApp.configure()
    checkLoggedIn()


}

func checkLoggedIn() {
    FIRAuth.auth()?.addStateDidChangeListener { auth, user in
        if user != nil {
            // User is signed in.
        } else {
            // No user is signed in.
            self.login()
        }
    }
}

func login() {
    let authUI = FIRAuthUI.init(auth: FIRAuth.auth()!)
    let options = FIRApp.defaultApp()?.options
    let clientId = options?.clientID
    let googleProvider = FIRGoogleAuthUI(clientID: clientId!)
    let facebookProvider = FIRFacebookAuthUI(appID: kFacebookAppID)
    authUI?.delegate = self
    authUI?.providers = [googleProvider, facebookProvider]
    let authViewController = authUI?.authViewController()
    self.present(authViewController!, animated: true, completion: nil)
}

@IBAction func logoutUser(_ sender: AnyObject) {
    try! FIRAuth.auth()!.signOut()
}

func authUI(_ authUI: FIRAuthUI, didSignInWith user: FIRUser?, error: Error?) {
    if error != nil {
        //Problem signing in
        login()
    }else {
        //User is in! Here is where we code after signing in

    }
}

func application(app: UIApplication, openURL url: NSURL, options: [String: AnyObject]) -> Bool {
    let sourceApplication = options[UIApplicationOpenURLOptionUniversalLinksOnly] as! String
    return FIRAuthUI.default()!.handleOpen(url as URL, sourceApplication: sourceApplication ) 
}


}

第五，我在Info.plist中添加了几个代码块（您需要自定义Facebook和Google代码 - 有关详细信息，请参阅Jacob Sikorski's guide。

<key>CFBundleURLTypes</key>
<array>
    <dict>
        <key>CFBundleURLSchemes</key>
        <array>
            <string>com.googleusercontent.apps.PLACE YOUR LONG CODE HERE ***(mine is 12 digits followed by a dash followed by 32 alpha-numeric characters)***</string>
            <string>PLACE YOUR FACEBOOK CODE HERE ***(mine said fb followed by 16 numbers)***</string>
        </array>
    </dict>
</array>

<key>LSApplicationQueriesSchemes</key>
    <array>
        <string>fbapi</string>
        <string>fbapi20130214</string>
        <string>fbapi20130410</string>
        <string>fbapi20130702</string>
        <string>fbapi20131010</string>
        <string>fbapi20131219</string>
        <string>fbapi20140410</string>
        <string>fbapi20140116</string>
        <string>fbapi20150313</string>
        <string>fbapi20150629</string>
        <string>fbapi20160328</string>
        <string>fbauth</string>
        <string>fbauth2</string>
        <string>fb-messenger-api20140430</string>
    </array>

那应该是它。如果您有任何问题，请告诉我们！

Answer 2

您应该在视图控制器顶部显示身份验证视图控制器。

self.presentViewController(authUI?.authViewController(), animated: true, completion: nil)

什么是在iOS上安装FirebaseUI的代码（Swift）

2 个答案: