I'm using Swift 3 and trying Google Sign In With this tutorial
Created a bridging header file with:
#import <Google/SignIn.h>
My Build Settings reference the correct header file
Yet when I go to implement the App Delegate I receive this error:
*Use of undeclared type GIDSignInDelegate*
What can I possibly be missing?
Please do not import any framework like google. Xcode automatically accesses required module if you have added correctly in the header bridge file.
and use following method to remove your error.
public func sign(_ signIn: GIDSignIn!, didSignInFor user: GIDGoogleUser!, withError error: Error!) {
if (error == nil) {
// Perform any operations on signed in user here.
let userId = user.userID // For client-side use only!
let idToken = user.authentication.idToken // Safe to send to the server
let fullName = user.profile.name
let givenName = user.profile.givenName
let familyName = user.profile.familyName
let email = user.profile.email
// ...
} else {
print("\(error.localizedDescription)")
}
}
To solve your issue you need to do the following things :
import GoogleSignInimplement the following methods:
func application(_ app: UIApplication, open url: URL, options: [UIApplicationOpenURLOptionsKey : Any] = [:]) -> Bool
{
let handled = GIDSignIn.sharedInstance().handle(url, sourceApplication:options[UIApplicationOpenURLOptionsKey.sourceApplication] as? String, annotation: [:])
return handled
}
and this function :
func application(_ application: UIApplication, open url: URL, sourceApplication: String?, annotation: Any) -> Bool {
return GIDSignIn.sharedInstance().handle(url,sourceApplication: sourceApplication, annotation: annotation)
}
In your View controller make sure to include the following import
import FirebaseAuth
import GoogleSignIn
make sure that your View Controller implement the following
GIDSignInUIDelegate , GIDSignInDelegate
In the viewDidLoad function add the following:
GIDSignIn.sharedInstance().clientID = FIRApp.defaultApp()?.options.clientID
GIDSignIn.sharedInstance().delegate = self
GIDSignIn.sharedInstance().uiDelegate = self
and finally implement the method SignIn
func signIn(signIn: GIDSignIn!, didSignInForUser user: GIDGoogleUser!, withError error: NSError!) {
if (error == nil) {
// Perform any operations on signed in user here.
let userId = user.userID // For client-side use only!
let idToken = user.authentication.idToken // Safe to send to the server
let fullName = user.profile.name
let givenName = user.profile.givenName
let familyName = user.profile.familyName
let email = user.profile.email
// ...
} else {
print("\(error.localizedDescription)")
}
}
In your storyboard add a view and make it extend from GIDSignInButton
class = GIDSignInButton
if you want to implement the sign out method : just add the following method to the same view controller
func signIn(signIn: GIDSignIn!, didDisconnectWithUser user:GIDGoogleUser!, withError error: NSError!) {
// Perform any operations when the user disconnects from app here.
// ...
}
Run the project, when you are in the view controller where you have added the above methods , you will get the google sign in button , click on it and a webView will be opened and finally sign in with your google account and you will be redirected back to the application
PS: I don't know why google called both of the signin and signout methods as SIGNIN , they need to change that in there libraries. for a better explanation you need to better read the tutorial that you have linked. If you have any question i'm looking forward to read your questions.
