iTunes Store API rating count retriever snippet

gistfile1.m

#pragma mark - iTunes Store API

#define ITUNES_APP_ID @"870393074"

- (void)updateReviewCount
{
    NSString *countryCode = [[[NSLocale currentLocale] objectForKey: NSLocaleCountryCode] lowercaseString];
    NSString *url = [NSString stringWithFormat:@"https://itunes.apple.com/%@/lookup?id=%@", countryCode, ITUNES_APP_ID];
    
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    AFHTTPRequestOperation *req = [manager GET:url parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
        
        NSDictionary *appInfo = [responseObject[@"results"] firstObject];
        if (appInfo) {
            NSInteger count = [appInfo[@"userRatingCountForCurrentVersion"] integerValue];
            if (count > 0)
                self.reviewCount = [NSString stringWithFormat:@"%ld %@ rated this version", (long)count, (count == 1) ? @"person has" : @"people have"];
            else
                self.reviewCount = @"Nobody has rated this version yet";
            [self.tableView reloadData];
        }

    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        self.reviewCount = @"Couldn't connect to App Store.";
        [self.tableView reloadData];
    }];
    [req start];
}

On line 17, you should use %tu instead of %ld and a cast for the format specifier.

%tu works for NSUInteger
%tx for NSUInteger (hex output)
%zd for NSInteger