xcode 无法使用 Firebase 身份验证：FIRAuth.auth 不起作用
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Cannot use Firebase authentication: FIRAuth.auth does not work
提问by Andrew Qin
I have been struggling with this issue for a few days, I am a rookie and I am not able to find a solution. I am trying to create a user sign up and log in page using XCode 8.3.3 and am using Firebase as database.
我已经在这个问题上挣扎了几天，我是一个菜鸟，我无法找到解决方案。我正在尝试使用 XCode 8.3.3 创建用户注册和登录页面，并使用 Firebase 作为数据库。
My code is as follows:
我的代码如下：
import UIKit
import Firebase
import FirebaseAuth
class SignUpViewController: UIViewController {
//Outlets
@IBOutlet weak var emailTextField: UITextField!
@IBOutlet weak var passwordTextField: UITextField!
//Sign Up Action for email
@IBAction func createAccountAction(_ sender: AnyObject) {
if emailTextField.text == "" {
let alertController = UIAlertController(title: "Error", message: "Please enter your email and password", preferredStyle: .alert)
let defaultAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
alertController.addAction(defaultAction)
present(alertController, animated: true, completion: nil)
} else {
FIRAuth.auth().createUser(withEmail: emailTextField.text!, password: passwordTextField.text!) { (user, error) in
if error == nil {
print("You have successfully signed up")
//Goes to the Setup page which lets the user take a photo for their profile picture and also chose a username
let vc = self.storyboard?.instantiateViewController(withIdentifier: "Home")
self.present(vc!, animated: true, completion: nil)
} else {
let alertController = UIAlertController(title: "Error", message: error?.localizedDescription, preferredStyle: .alert)
let defaultAction = UIAlertAction(title: "OK", style: .cancel, handler: nil)
alertController.addAction(defaultAction)
self.present(alertController, animated: true, completion: nil)
}
}
}
}
The part that has issue is FIRAuth.auth. The error says "FIRAuthhas been renamed to Auth" and if I applied such fix, although the built became successful, I could only see nothing but a white screen. If I delete the code then I can see a normal sign in screen created earlier.
有问题的部分是FIRAuth.auth. 错误说“FIRAuth已重命名为 Auth”，如果我应用了这样的修复，虽然构建成功，但我只能看到白屏。如果我删除代码，那么我可以看到之前创建的正常登录屏幕。
Another thing is when I type import FirebaseAutha red line appeared in the suggested word list that crossed out FirebaseAuth, I still proceeded.
另一件事是，当我输入 importFirebaseAuth时，建议的单词列表中出现一条红线被划掉FirebaseAuth，我仍然继续。
Please help. I don't know why it happens. Could there be any missing pod files? Much appreciated.
请帮忙。我不知道为什么会这样。是否有任何丢失的 pod 文件？非常感激。
Storyboard: storyboard
故事板： 故事板
回答by Vlad Pulichev
FIRAuthbecame a Authin last Firebaseversion. link to Docs
FIRAuth成为Auth最后一个Firebase版本。链接到文档
import Firebase
Then, in the application:didFinishLaunchingWithOptions:method, initialize the FirebaseAppobject:
然后，在application:didFinishLaunchingWithOptions:方法中，初始化FirebaseApp对象：
// Use Firebase library to configure APIs
FirebaseApp.configure()
Now you can use in your file (also import Firebase)
现在您可以在您的文件中使用（也import Firebase）
Auth.auth().createUser(withEmail: email, password: password) { (user, error) in
// ...
}
Hope it helps
希望能帮助到你
回答by Kiran
You need to put this line into your pod file- pod 'Firebase/Auth'. do pod install after and you should be able to do get rid of the errors regarding Auth.
您需要将此行放入您的 pod 文件 - pod 'Firebase/Auth'。在之后执行 pod install，您应该能够摆脱有关 Auth 的错误。
