使用iOS SDK提取Facebook朋友对某些朋友返回null

Question

I am using this code to fetch friends birthday:

- (void)apiGraphFriendsWithBirthdays {
[self showActivityIndicator];

HackbookAppDelegate *delegate = (HackbookAppDelegate *)[[UIApplication sharedApplication] delegate];
NSMutableDictionary * params = [NSMutableDictionary dictionaryWithObjectsAndKeys:
 @"picture,id,name,link,birthday,gender,last_name,first_name",@"fields",
 nil];

[[delegate facebook] requestWithGraphPath:@"me/friends" andParams:params andHttpMethod:@"GET" andDelegate:self];

}

Then I'm printing to log some of what I fetched:

        NSMutableArray *friends = [[NSMutableArray alloc] initWithCapacity:1];
        NSArray *resultData = [result objectForKey:@"data"];
        if ([resultData count] > 0) {
            for (NSUInteger i=0; i<[resultData count] && i < 25; i++) {
                [friends addObject:[resultData objectAtIndex:i]];

                NSDictionary *friend = [resultData objectAtIndex:i];
                long long fbid = [[friend objectForKey:@"id"]longLongValue];
                NSString *name = [friend objectForKey:@"name"];
                NSString *birthday = [[friend objectForKey:@"birthday"] description];
                NSLog(@"id: %lld - Name: %@ - Birthday: %@", fbid, name,birthday);


            }

        } else {
            [self showMessage:@"You have no friends."];
        }
        [friends release];

for some reason some of my friends birthdays are null although I can see their birthdays on Facebook.

Is that something on my code or is it some kind of specific user privacy settings?

Answer 1

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