objective-c - 谷歌加 iOS SDK : how to get logged in user email?

Question

目前正在使用范围为 GooglePlusSample 的游戏:

@"https://www.googleapis.com/auth/plus.me", 
@"https://www.googleapis.com/auth/userinfo.email" and 
@"https://www.googleapis.com/auth/userinfo.profile". 

尝试在回调方法finishedWithAuth:error:中调用auth.userEmail、auth.userData，但是都是空的...

Answer 1

-(void)finishedWithAuth:(GTMOAuth2Authentication *)auth error:(NSError *)error{

    NSLog(@"Received Error %@  and auth object==%@",error,auth);

    if (error) {
        // Do some error handling here.
    } else {
    [self refreshInterfaceBasedOnSignIn];

    NSLog(@"email %@ ",[NSString stringWithFormat:@"Email: %@",[GPPSignIn sharedInstance].authentication.userEmail]);
    NSLog(@"Received error %@ and auth object %@",error, auth);

    // 1. Create a |GTLServicePlus| instance to send a request to Google+.
    GTLServicePlus* plusService = [[GTLServicePlus alloc] init] ;
    plusService.retryEnabled = YES;

    // 2. Set a valid |GTMOAuth2Authentication| object as the authorizer.
    [plusService setAuthorizer:[GPPSignIn sharedInstance].authentication];


    GTLQueryPlus *query = [GTLQueryPlus queryForPeopleGetWithUserId:@"me"];

    // *4. Use the "v1" version of the Google+ API.*
    plusService.apiVersion = @"v1";

    [plusService executeQuery:query
            completionHandler:^(GTLServiceTicket *ticket,
                                GTLPlusPerson *person,
                                NSError *error) {
                if (error) {



                    //Handle Error

                } else
                {


                    NSLog(@"Email= %@",[GPPSignIn sharedInstance].authentication.userEmail);
                    NSLog(@"GoogleID=%@",person.identifier);
                    NSLog(@"User Name=%@",[person.name.givenName stringByAppendingFormat:@" %@",person.name.familyName]);
                    NSLog(@"Gender=%@",person.gender);

                }
            }];
    }

}