How to get user's email id of google account?

Question

I am working on an iPhone app in which I am giving user option to login with his/her google account. Now, I want that user's google email id through JSON or XML. I have searched a lot, but did not satisfactory result. Thanx in advance.

Answer 1

did you check the oauth autorization with google api at their developers site? https://developers.google.com/accounts/docs/OAuth2

Answer 2

i think you can find something from this link..... hope this link help you..... http://code.google.com/p/gdata-objectivec-client/wiki/GDataObjCIntroduction and also https://code.google.com/p/gdata-objectivec-client/ :)

write bellow code when you want to get contact....

GDataServiceGoogleContact *service = [self contactService];
        GDataServiceTicket *ticket;

        BOOL shouldShowDeleted = TRUE;
        const int kBuncha = 2000;

        NSURL *feedURL = [GDataServiceGoogleContact contactFeedURLForUserID:kGDataServiceDefaultUser];

        GDataQueryContact *query = [GDataQueryContact contactQueryWithFeedURL:feedURL];
        [query setShouldShowDeleted:shouldShowDeleted];
        [query setMaxResults:kBuncha];

        ticket = [service fetchFeedWithQuery:query
                                    delegate:self
                           didFinishSelector:@selector(contactsFetchTicket:finishedWithFeed:error:)];

        [self setContactFetchTicket:ticket];

bellow method is GmailAPI delegate method...

- (GDataServiceGoogleContact *)contactService 
{
    static GDataServiceGoogleContact* service = nil;

    if (!service) {
        service = [[GDataServiceGoogleContact alloc] init];

        [service setShouldCacheResponseData:YES];
        [service setServiceShouldFollowNextLinks:YES];
    }

    [service setUserCredentialsWithUsername:txtEmail.text
                                   password:txtPass.text];

    return service;
}

after that you can get contact with bellow code...

for (int i = 0; i < [contacts count]; i++) {
        GDataEntryContact *contact = [contacts objectAtIndex:i];
        //        NSLog(@">>>>>>>>>>>>>>>> elementname contact :%@", [[[contact name] fullName] contentStringValue]);
        NSString *ContactName = [[[contact name] fullName] contentStringValue];
        GDataEmail *email = [[contact emailAddresses] objectAtIndex:0];
        //        NSLog(@">>>>>>>>>>>>>>>> Contact's email id :%@ contact name :%@", [email address], ContactName);
        NSString *ContactEmail = [email address];
}

hope this help you.... :)