无法将类型“ AppDelegate”的值分配给类型“ GIDSignInDelegate！”

Question

Cannot assign value of type 'AppDelegate' to type 'GIDSignInDelegate!'

• I have added both - #import #import in the Bridging header file.
• I have installed the google SDK from cocoapods '/Library/Ruby/Gems/2.0.0/gems/cocoapods-1.2.0/lib/cocoapods.rb'
• This is the AppDelegate declaration - class AppDelegate: UIResponder, UIApplicationDelegate, GIDSignInUIDelegate {

Step 2: Describe your environment

• xcode 8
• iOS 10

Observed Results:

• Compiler Error - Cannot assign value of type 'AppDelegate' to type 'GIDSignInDelegate!'

Relevant Code:

 func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { // Override point for customization after application launch. self.initialize() IQKeyboardManager.sharedManager().enable = true TimeSyncManager.sharedInstance.syncTimeWithServer(withNotifcationOption: false) AppScreenManager.sharedInstance.setUpInitialScreen() SDKApplicationDelegate.shared.application(application, didFinishLaunchingWithOptions: launchOptions) //setUpGoogleSDK() var configureError: NSError? GGLContext.sharedInstance().configureWithError(&configureError) assert(configureError == nil, "Error configuring Google services: \\(configureError)") GIDSignIn.sharedInstance().delegate = self //<<--------Error at this Point application.registerForRemoteNotifications() UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { (granted, error) in //Parse errors and track state } return true 

Now the problem I face is that Appdelegate shows error that- Type 'AppDelegate' does not conform to protocol 'GIDSignInDelegate'

My AppDelegate Code is

 class AppDelegate: UIResponder, UIApplicationDelegate, GIDSignInDelegate { var window: UIWindow? public func sign(_ signIn: GIDSignIn!, didSignInFor user: GIDGoogleUser!, withError error: Error!){ } // Finished disconnecting |user| from the app successfully if |error| is |nil|. public func sign(_ signIn: GIDSignIn!, didDisconnectWith user: GIDGoogleUser!, withError error: Error!){ } } 

Answer 1

You have implemented GIDSignInUIDelegate instead of GIDSignInDelegate . Simply implement the GIDSignInDelegate will remove the compile error.

class AppDelegate: UIResponder, UIApplicationDelegate, GIDSignInDelegate {

Don't forgot to implement methods of GIDSignInDelegate with AppDelegate .

func sign(_ signIn: GIDSignIn!, didDisconnectWith user: GIDGoogleUser!, withError error: Error!) {

}

func sign(_ signIn: GIDSignIn!, didSignInFor user: GIDGoogleUser!, withError error: Error!) {

}

Answer 2

You need to implement GIDSignInDelegate in AppDelegate

 class AppDelegate: UIResponder, UIApplicationDelegate, GIDSignInDelegate {

  func googleSignIn(signIn: GIDSignIn!, didSignInForUser user: GIDGoogleUser!, withError error: NSError!) {

  }


  func googleSignOut() {

  }

  // Implement the required GIDSignInDelegate methods and Unauth when disconnected from Google

  func signIn(signIn: GIDSignIn!, didDisconnectWithUser user:GIDGoogleUser!, withError error: NSError!) {

  }


}