How to invite friends to my application via facebook iOS SDK and Graph API

Question

I\'m writing an iPhone application.

I want to give the user the option to invite friends to start using my application via Facebook.

More specifically I want to

Answer 1

Make sure your facebook app id is same in both developer page and info in xcode next, enable sandbox mode and must fill canvas url [under app on facebook category] in developer page.

NSString *facebookID = @"Your friend facebook id";;
    NSMutableDictionary* params =
    [NSMutableDictionary dictionaryWithObject:facebookID forKey:@"to"];

    NSString *message = @"SOME_MESSAGE";
    NSString *title = @"TITLE";

    [FBWebDialogs presentRequestsDialogModallyWithSession:nil
                  message:message
                title:title
                parameters:params handler:^(FBWebDialogResult result, NSURL *resultURL, NSError *error) {
                        if (error)
                    {
                    // Case A: Error launching the dialog or sending request.
                        NSLog(@"Error sending request.");
                    }
                    else
                    {
                        if (result == FBWebDialogResultDialogNotCompleted)
                    {
                    // Case B: User clicked the "x" icon
                        NSLog(@"User canceled request.");
                    }
                    else
                    {
                        NSLog(@"Request Sent. %@", params);
                    }
        }}];