Google Sign-In via Firebase：GIDSignInDelegate不符合ViewController [英] Google Sign-In via Firebase: GIDSignInDelegate does not conform to ViewController

问题描述

我正在将Google Sign-In引入到我的应用中，虽然Google和Firebase文档都足够透彻，但是我所做的只是他们的建议还不够...我仍然收到此错误。希望这可以帮助其他人在实现SDK时找到问题的解决方案....感谢您提前审查这个矮胖的： ：//i.stack.imgur.com/TOl6S.pngrel =noreferrer>

以下是

PS 我没有将GIDSignInDelegate添加到AppDelegate，因为我我正在计划我的VC来处理登录逻辑，正如你将会在下面看到的那样... / p>

 类LoginVC：UIViewController，UIViewControllerTransitioningDelegate，UITextViewDelegate，UITextFieldDelegate，GIDSignInDelegate，GIDSignInUIDelegate {
 
覆盖f unc viewDidLoad（）{
 super.viewDidLoad（）
 let ref = Firebase（url：https://MYAPPID.firebaseio.com）
 GIDDSignIn.sharedInstance（）。delegate = self 
 GIDSignIn.sharedInstance（）。uiDelegate = self 
 GIDSignIn.sharedInstance（）。signInSilently（）//如果用户最近已经过认证
} 
  
 
  //实现所需的GIDSignInDelegate方法
 func googleSignIn（signIn：GIDSignIn！，didSignInForUser user： （错误== nil）{
 // Auth with Firebase 
 let userId = user.userID 
 let idToken = user。 authentication.idToken 
 let fullName = user.profile.name 
 let givenName = user.profile.givenName 
 let familyName = user.profile.familyName 
 let email = user.profile.email 
 ref.authWithOAuthProvider（google，token：user.authentication.accessToken，withCompletionBlock：{（error，authData）in 
 //用户已经登录！ 
} else {
 print（\（error.localizedDescription））
} 
} 
 
 
 func googleSignOut（）{
 GIDSignIn.sharedInstance（）。signOut（）
 ref.unauth（）
} 
 
 //实现所需的GIDSignInDelegate方法和Unauth当与Google 
断开时，func signIn（signIn：GIDSignIn！，didDisconnectWithUser user：GIDGoogleUser !, withError error：NSError！）{
 ref.unauth（）
} 
 
 
 // IBAction来处理登录过程
 @IBAction func googleButtonPressed（sender：TKTransitionSubmitButton！）{
 GIDSignIn.sharedInstance（）。signIn（）
} 
  
折叠？很抱歉，对于那些漫长的人...但是我已经完成了Firebase指南所建议的所有内容，这意味着Google文档中AppDelegate的逻辑在ProfileVC中都是存在的。任何指针？
解决方案
这是说你的类没有为你的 GIDSignInDelegate 。在Swift 3中，方法的名字有很大的改变。所以你的新方法是：
 
lockquote 
 public func sign（_ signIn：GIDSignIn !, didSignInFor用户：
 GIDGoogleUser !,有错误错误：NSError！）
 
请检查图书馆的屏幕截图。所以 In 在新的swift 3约定的方法或类的命名中是缺少的。 
  
 
I'm introducing Google Sign-In to my app and whilst both Google and Firebase documentation is thorough enough, what I have done as they suggested is not sufficient... I am still getting this error. Hopefully this will help others with finding a solution to the problem when implementing their SDK....thanks in advance for reviewing this chunky one:



Here's the Firebase guide and the Google guide:

So 

Added Google to podfile - CHECK
Added line into Bridging-Header - CHECK
Added GoogleService-Info.plist & bundle identifier & reversed client ID  to URL schemes - CHECK
App Delegate has the following, with no errors but I notice there are likely to be conflicts between Facebook login (working correctly) and newly Google, which I've no idea how to handle together:



P.S. I have NOT added GIDSignInDelegate to AppDelegate here because I am planning for my VC to handle the login logic, as you will see below...
LoginVC ViewController code here:
class LoginVC: UIViewController, UIViewControllerTransitioningDelegate, UITextViewDelegate, UITextFieldDelegate, GIDSignInDelegate, GIDSignInUIDelegate {

    override func viewDidLoad() {
    super.viewDidLoad()
    let ref = Firebase(url: "https://MYAPPID.firebaseio.com")
    GIDDSignIn.sharedInstance().delegate = self
    GIDSignIn.sharedInstance().uiDelegate = self
    GIDSignIn.sharedInstance().signInSilently()  // for if the user has recently been authenticated
    }

Then this, which from what I can see... should be everything Google needs to talk to Firebase:
        // Implementing the required GIDSignInDelegate methods
        func googleSignIn(signIn: GIDSignIn!, didSignInForUser user: GIDGoogleUser!, withError error: NSError!) {
            if (error == nil) {
                // Auth with Firebase
                let userId = user.userID
                let idToken = user.authentication.idToken
                let fullName = user.profile.name
                let givenName = user.profile.givenName
                let familyName = user.profile.familyName
                let email = user.profile.email
                ref.authWithOAuthProvider("google", token: user.authentication.accessToken, withCompletionBlock: { (error, authData) in
                    // User is logged in!
                })
            } else {
                print("\(error.localizedDescription)")
            }
        }


        func googleSignOut() {
            GIDSignIn.sharedInstance().signOut()
            ref.unauth()
        }

        // Implement the required GIDSignInDelegate methods and Unauth when disconnected from Google
        func signIn(signIn: GIDSignIn!, didDisconnectWithUser user:GIDGoogleUser!, withError error: NSError!) {
            ref.unauth()
        }


        // IBAction to handle the sign-in process
        @IBAction func googleButtonPressed(sender: TKTransitionSubmitButton!) {
            GIDSignIn.sharedInstance().signIn()
        }
Baffled? Sorry for the long one guys...but I've done everything the Firebase guide suggests and that means the logic in the Google doc for AppDelegate is all there in the ProfileVC. Any pointers?
解决方案
It's saying your class have not implemented required method for your GIDSignInDelegate. There are major change in name of method in Swift 3. So your new method will be 

  
public func sign(_ signIn: GIDSignIn!, didSignInFor user:
  GIDGoogleUser!, withError error: NSError!)
Please check Library screen shot. So In is missing in new swift 3 convention of naming of methods or classes.


                        
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