GData Objective-C Client Contact Service - iphone

Question

I downloaded the last GData client via SVN https://code.google.com/p/gdata-objectivec-client/
I succesfully compiled it and I integrated successfully the static library inside my project.
I need to retrieve all gmail contacts about a google username:
- (GDataServiceGoogleContact *)contactService {
static GDataServiceGoogleContact* service = nil;
if (!service) {
service = [[GDataServiceGoogleContact alloc] init];
[service setShouldCacheResponseData:YES];
[service setServiceShouldFollowNextLinks:YES];
}
// update the username/password each time the service is requested
NSString *username = usr.text;
NSString *password = psw.text;
[service setUserCredentialsWithUsername:username
password:password];
return service;
}
- (IBAction)getContacts:(id)sender; {
GDataServiceGoogleContact *gc =[self contactService];
NSURL *feedURL = [GDataServiceGoogleContact contactFeedURLForUserID:usr.text];
GDataServiceTicket *ticket;
ticket = [gc fetchFeedWithURL:feedURL
delegate:self
didFinishSelector:#selector(ticket:finishedWithFeed:error:)];
[self startLoading];
}
The callback selector looks like this:
- (void)ticket:(GDataServiceTicket *)ticket finishedWithFeed:(GDataFeedContact *)feed
error:(NSError *)error {
[self stopLoading];
if (error == nil) {
NSArray *entries = [NSArray arrayWithArray:[feed entries]];
if ([entries count] > 0) {
for (GDataEntryContact *firstContact in entries) {
NSString *name = [((GDataNameElement*)[[firstContact name] fullName]) stringValue];
NSString *email = ([firstContact emailAddresses] != nil && [[firstContact emailAddresses] count]!=0) ? [[[firstContact emailAddresses] objectAtIndex:0] stringValueForAttribute:#"address"]: NSLocalizedString(#"not found",#"");
if (name == nil) {
name = email;
}
BBGmailContact *tmpContact = [[BBGmailContact alloc] initWithName:name email:email];
[contacts addObject:tmpContact];
[self.navigationController popViewControllerAnimated:YES];
}
[gmailDelegate contactsDidDownload:contacts];
} else {
[self createAlertView:NSLocalizedString(#"Warning", #"") message:NSLocalizedString(#"No contact found", #"")];
}
} else {
[self createAlertView:NSLocalizedString(#"Error", #"Error") message:NSLocalizedString(#"Please, check your user and password", #"")];
}
}
Why is every entry of entries a kind of class: GDataEntryBase instead GDataEntryContact?
Where is my error? Can someone help me?

Answer 1

Entries are created as GDataEntryBase if the application does not have the service-specific classes for Contacts compiled and linked into the app.
Be sure too that the appropriate build flags for the Contacts service are specified as described in the docs.