iOS - Can't send Facebook requests

Question

I currently have a problem with my iOS application because I don't seem to be able to send requests to people... Here is the code that I have:

NSMutableDictionary* params = [NSMutableDictionary dictionaryWithObjectsAndKeys:nil];

if([FBSession activeSession].isOpen) {
    [FBWebDialogs presentRequestsDialogModallyWithSession:[FBSession activeSession] message:@"Join me." title:@"Invite" parameters:params handler:^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
        NSLog(@"%@", [FBSession activeSession]);
        if (error)
            NSLog(@"Error sending request.");
        else {
            if (result == FBWebDialogResultDialogNotCompleted)
                NSLog(@"User canceled request.");
            else if(result == FBWebDialogResultDialogCompleted)
                NSLog(@"Request: %@", resultURL);
            else
                NSLog(@"Error unknown.");
        }
    }];        
}
else {
    [FBSession openActiveSessionWithReadPermissions:@[@"email"] allowLoginUI:YES completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
        if(session.isOpen) {
            [FBSession openActiveSessionWithPublishPermissions:@[@"publish_actions"] defaultAudience:FBSessionDefaultAudienceEveryone allowLoginUI:YES completionHandler:^(FBSession *session, FBSessionState status, NSError *error) {
                if(session.isOpen) {
                    [self showRequestForFacebook];
                }
            }];
        }
    }];
}

Every time I get a Request: (null). I get a request ID but nothing on the account. I looked at the sample in the Facebook SDK and I seem to have exactly the same. However, it works with the sample and not with my code. Is there anything to change somewhere? Is it something on developers.facebook.com?

Edit: I forgot to say that in the same application I use a SLComposeViewController to share on Facebook and it works perfectly.

Thanks a lot! :)

Answer 1

  NSString *query2 = [NSString stringWithFormat:@"SELECT uid, name, pic_square,is_app_user FROM user WHERE  is_app_user = 1 AND uid IN " @"(SELECT uid2 FROM friend WHERE uid1 = me())"];

// Set up the query parameter
NSDictionary *queryParam2 = @{ @"q": query2 };
// Make the API request that uses FQL
[FBRequestConnection startWithGraphPath:@"/fql" parameters:queryParam2  HTTPMethod:@"GET"
                                            completionHandler:^(FBRequestConnection *connection,
                                                               id result,
                                                               NSError *error)
                                           {

                                            if (error) {

                                            } else {
                                            // NSLog(@"Result: %@", result);
                                             // Get the friend data to display
                                             NSArray *friendInfo = (NSArray *) result[@"data"];
                                              NSLog(@"%@",friendInfo);
                                             self.data=friendInfo;

                                           [self constructDictionaryOfNumbers];
                                             // Show the friend details display

                                            }
                                           }];

}