Posting to Facebook friends wall instead of sending a notification with iOS

Question

I currently have the following code that chooses a random Facebook friend and posts to their wall. I would like to be able to choose from all friends (not select a random one) and post to their wall. If anyone could help me with the following code that would be great :)

 case gkAPIFriendsForDialogFeed:
            {
                NSArray *resultData = [result objectForKey: @"data"];
                // Check that the user has friends
                if ([resultData count] > 0) {
                    // Pick a random friend to post the feed to
                    int randomNumber = arc4random() % [resultData count];
                    [self apiDialogFeedFriend: 
                     [[resultData objectAtIndex: randomNumber] objectForKey: @"id"]];
                } else {
                    [self showMessage:@"You do not have any friends to post to."];
                }
                break;
            }

this code selects all friends but doesn't post to their wall instead it sends them a notification:

case gkAPIGetAppUsersFriendsUsing:
        {
            NSMutableArray *friendsWithApp = [[NSMutableArray alloc] initWithCapacity:1];
            // Many results
            if ([result isKindOfClass:[NSArray class]]) {
                [friendsWithApp addObjectsFromArray:result];
            } else if ([result isKindOfClass:[NSDecimalNumber class]]) {
                [friendsWithApp addObject: [result stringValue]];
            }

            if ([friendsWithApp count] > 0) {
                [self apiDialogRequestsSendToUsers:friendsWithApp];
            } else {
                [self showMessage:@"None of your friends are using Whatto."];
            }

            [friendsWithApp release];
            break;
        }

Answer 1

Posting to multiple users' walls is against Facebook Platforms Terms. You should stick with the Requests method instead, as that is the correct way to message multiple users.

Answer 2

Call this function after get random id.

and change parameter according to your app.

-(void)sendFBPost:(UIButton *)tag

{

NSString *Message = [NSString stringWithFormat:@"-posted via iPhone App"];
NSMutableDictionary *params1 = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                Message, @"message", nil];
NSString *post=[[appDelegate.FBFriendListArray objectAtIndex:tag.tag] objectForKey:@"id"];

[[appDelegate facebook] requestWithGraphPath:[NSString stringWithFormat:@"/%@/feed",post] andParams:params1 andHttpMethod:@"POST" andDelegate:self];

UIAlertView  *alert = [[UIAlertView alloc] initWithTitle:@"Message!" message:@"Invitation Send Sucessfully" delegate:self cancelButtonTitle:@"OK" otherButtonTitles: nil];
[alert show];
[alert release];

}