How do i get firstname and givenname from Google Login?

Question

I followed the instructions on https://developers.google.com/identity/sign-in/ios/sdk/ to integrate the google login in my swift project. As you might know the login calls the function below when successful. It gets called but i cannot figure out how i get only the first name and the last name of the field user.profile.name . I only get the full name, but for my purposes i need the name separated :-(

func signIn(signIn: GIDSignIn, didSignInForUser user: GIDGoogleUser, withError error: NSError) {
// Perform any operations on signed in user here.
var userId: String = user.userID
// For client-side use only!
var idToken: String = user.authentication.idToken
// Safe to send to the server
var name: String = user.profile.name
var email: String = user.profile.email
}

Can somebody please explain to me how i get the information??

Phil

Answer 1

Ok... so after a few hours of digging around in the Google references i found something interesting for Google APIs and OAuth https://developers.google.com/identity/protocols/OAuth2 We can get additional information by querying https://www.googleapis.com/oauth2/v3/userinfo?access_token= (thanks to this question What are the end points to get the emailId using oauth for the google, yahoo, twitter service providers?) i figured out that i can get a lot of information with the Authentication Token if the user has successfully logged in... i don't think the solutions with google+ above should be used, because they use old SDKs https://developers.google.com/+/mobile/ios/upgrading-sdk (you need these to use e.g. GTLServicePlus ) It would be safer (for future purposes) to use the solution with OAuth and the latest google SDK ->https://developers.google.com/identity/sign-in/ios/start

But thanks for your answers :-)

for anybody with the same problem this code below should work ->

cheers Phil

EDIT: Thanks jcaron! indeed that would be better asynchronous had forgotten to do this -> updated the solution

func signIn(signIn: GIDSignIn!, didSignInForUser user: GIDGoogleUser!, withError error: NSError!) {
    if (error == nil) {
        var firstName = ""
        var lastName = ""

        UIApplication.sharedApplication().networkActivityIndicatorVisible = true
        let url = NSURL(string:  "https://www.googleapis.com/oauth2/v3/userinfo?access_token=\(user.authentication.accessToken)")
        let session = NSURLSession.sharedSession()
        session.dataTaskWithURL(url!) {(data, response, error) -> Void in
            UIApplication.sharedApplication().networkActivityIndicatorVisible = false
            do {
                let userData = try NSJSONSerialization.JSONObjectWithData(data!, options:[]) as? [String:AnyObject]
                /*
                Get the account information you want here from the dictionary
                Possible values are
                "id": "...",
                "email": "...",
                "verified_email": ...,
                "name": "...",
                "given_name": "...",
                "family_name": "...",
                "link": "https://plus.google.com/...",
                "picture": "https://lh5.googleuserco...",
                "gender": "...",
                "locale": "..."

                so in my case:
                */
                firstName = userData!["given_name"] as! String
                lastName = userData!["family_name"] as! String
                print(firstName)
                print(lastName)
            } catch {
                NSLog("Account Information could not be loaded")
            }
        }.resume()
    }
    else {
        //Login Failed
    }
}

Answer 2

Here's something similar to what we have in production:

private func finishAuthorizationForUser(signInUser: GIDGoogleUser) {

    let servicePlus = GTLServicePlus()
    servicePlus.authorizer = signInUser.authentication.fetcherAuthorizer()
    servicePlus.fetchObjectWithURL(NSURL(string: "https://www.googleapis.com/plus/v1/people/me")!, completionHandler: { (ticket, object, error) -> Void in

        guard error == nil else {
            self.showUnsuccessfulLoginAlertWithMessage(error.description)
            return
        }

        guard let user = object as? GTLObject else {
            self.showUnsuccessfulLoginAlertWithMessage("Bad user")
            return
        }

        let userJson = NSDictionary(dictionary: user.JSON) as! [String: AnyObject]

        if let names = userJson["name"] as? [String: String] {
            let lastName = names["familyName"]
            let firstName = names["givenName"]
            //...do something with these names
        }
    })

}

Answer 3

You know the last string will be the last name every time :) Until the last name in the array consider as name or names. Consider the last string as last name. You are going to have an array of two string at the end.

Answer 4

You'll have to make an additional query to Google+ to get the user's details. This requires the GooglePlus and GoogleOpenSource frameworks to be linked in.

Here's the Objective-C code for this, translation to Swift is left as an exercice for the reader:

#import <Google/SignIn.h>
#import <GooglePlus/GooglePlus.h>
#import <GoogleOpenSource/GoogleOpenSource.h>

...

- (void)signIn:(GIDSignIn *)signIn
didSignInForUser:(GIDGoogleUser *)user
     withError:(NSError *)error
{
    if (error)
    {
        NSLog(@"Google sign-in error: %@", error);
        // do any cleanup like re-enabling buttons here
        return;
    }
    if (!user)
    {
        NSLog(@"Google sign-in returned nil user");
        // do any cleanup like re-enabling buttons here
        return;
    }

    NSLog(@"Google sign-in successfull: %@, userId: %@ token: %@ name: %@ email: %@",
          user,
          user.userID,
          user.authentication.idToken,
          user.profile.name,
          user.profile.email);

    NSString *userId = user.userID;               // For client-side use only!
    NSString *idToken = user.authentication.idToken; // Safe to send to the server
    NSString *name = user.profile.name;
    NSString *email = user.profile.email;
    __block NSString *firstName = @"";
    __block NSString *lastName = @"";
    __block NSString *title = @"";

    NSArray *nameComponents = [name componentsSeparatedByString:@" "];
    if (nameComponents.count == 2)
    {
        firstName = nameComponents[0];
        lastName = nameComponents[1];
    }

    GTMOAuth2Authentication *auth = [[GTMOAuth2Authentication alloc] init];
    [auth setClientID:signIn.clientID];
    [auth setUserEmail:user.profile.email];
    [auth setUserID:user.userID];
    [auth setAccessToken:user.authentication.accessToken];
    [auth setRefreshToken:user.authentication.refreshToken];
    [auth setExpirationDate: user.authentication.accessTokenExpirationDate];

    GTLServicePlus* plusService = [[GTLServicePlus alloc] init];
    plusService.retryEnabled = YES;
    plusService.authorizer = auth;
    GTLQueryPlus *query = [GTLQueryPlus queryForPeopleGetWithUserId:@"me"];

    [plusService executeQuery:query
            completionHandler:^(GTLServiceTicket *ticket,
                                GTLPlusPerson *person,
                                NSError *error)
     {
         if (error)
         {
             GTMLoggerError(@"Error: %@", error);
         }
         else
         {
             NSLog(@"me: %@, display name: %@, about me: %@, name: %@ / %@ gender: %@",
                   person, person.displayName, person.aboutMe, person.name.givenName, person.name.familyName, person.gender);
             firstName = person.name.givenName;
             lastName = person.name.familyName;
         }
         // do whatever you need with the data here
     }];
}