Google Plus iOS SDK: how to get logged in user email? - objective-c

Question

Currently playing around with GooglePlusSample with scope:
#"https://www.googleapis.com/auth/plus.me",
#"https://www.googleapis.com/auth/userinfo.email" and
#"https://www.googleapis.com/auth/userinfo.profile".
Tried calling auth.userEmail, auth.userData in callback method finishedWithAuth:error:, but both are empty...

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);
}
}];
}
}

Answer 2

Once user is authenticated you can call [[GPPSignIn sharedInstance] userEmail] to get authenticated user's email.

Answer 3

This worked for me :
Firstly use the userinfo.email scope as per :
signInButton.scope = [NSArray arrayWithObjects:
kGTLAuthScopePlusMe,
kGTLAuthScopePlusUserinfoEmail,
nil];
Then define these methods :
- (GTLServicePlus *)plusService {
static GTLServicePlus* service = nil;
if (!service) {
service = [[GTLServicePlus alloc] init];
// Have the service object set tickets to retry temporary error conditions
// automatically
service.retryEnabled = YES;
// Have the service object set tickets to automatically fetch additional
// pages of feeds when the feed's maxResult value is less than the number
// of items in the feed
service.shouldFetchNextPages = YES;
}
return service;
}
- (void)fetchUserProfile {
// Make a batch for fetching both the user's profile and the activity feed
GTLQueryPlus *profileQuery = [GTLQueryPlus queryForPeopleGetWithUserId:#"me"];
profileQuery.fields = #"id,emails,image,name,displayName";
profileQuery.completionBlock = ^(GTLServiceTicket *ticket, id object, NSError *error) {
if (error == nil) {
// Get the user profile
GTLPlusPerson *userProfile = object;
// Get what we want
NSArray * userEmails = userProfile.emails;
NSString * email = ((GTLPlusPersonEmailsItem *)[userEmails objectAtIndex:0]).value;
NSString * name = userProfile.displayName;
NSString * profileId = userProfile.identifier;
} else {
// Log the error
NSLog(#"Error : %#", [error localizedDescription]);
}
};
GTLBatchQuery *batchQuery = [GTLBatchQuery batchQuery];
[batchQuery addQuery:profileQuery];
GTLServicePlus *service = self.plusService;
self.profileTicket = [service executeQuery:batchQuery
completionHandler:^(GTLServiceTicket *ticket,
id result, NSError *error) {
self.profileTicket = nil;
// Update profile
}];
}
And finally call the "fetchUserProfile" method in the "finishedWithAuth" as per :
- (void)finishedWithAuth: (GTMOAuth2Authentication *)auth
error: (NSError *) error
{
// An error?
if (error != nil) {
// Log
} else {
// Set auth into the app delegate
myAppDelegate *appDelegate = (myAppDelegate *)[[UIApplication sharedApplication] delegate];
appDelegate.auth = auth;
// Get user profile
self.plusService.authorizer = auth;
[self fetchUserProfile];
}
}
Note this may not be perfect as it's a 'work in progress', in particular re: getting the correct email address when the user has more than one but it's a start!
Good luck.
Steve

Answer 4

If you have Access not configured error check services in google api console. make sure you enable google plus api services.