Annoying error 2: ViewController may not respond to -enableBBI

Question

Developers,
This is my second annoying error. The code works fine, but i get the following error message when i run the app "viewcontroller may not respond to -enableBBI".
The code i am using is below and i have placed ///Error/// next to parts of the code that trigger the error. The part of the code that shows an error is used to enable a Bar Button item.
Is there anything i can do to prevent this? or does it not really matter?
Ray, i am hoping you will have a quick glance over this. The code is something you gave me in the past. Perhaps you have a solution?
james
-(IBAction)NextItem {
int count = [flashCards count];
if (counter < count - 1) {
NSDictionary *nextItem = [self.flashCards objectAtIndex:++counter];
Label1.text = [nextItem objectForKey:Question_KEY];
[self enableBBI]; ////Error//////
-(IBAction)PreviousItem {
if (counter > 0) {
NSDictionary *nextItem = [self.flashCards objectAtIndex:--counter];
Label1.text = [nextItem objectForKey:Question_KEY];
[self enableBBI]; ////Error//////
- (void)enableBBI {
int count = [flashCards count];
next.enabled = counter < count - 1 ? YES : NO;
prev.enabled = counter > 0 ? YES : NO;
flip.enabled = count > 0 ? YES : NO;
Message was edited by: james_coleman01

Answer 1

See xnav's suggestion, then add the following at the end of the file and move enableBBI inside:
@implementation YourViewControllerName (PrivateMethods)
- (void)enableBBI
@end
Using categories in this way is just a trick to simulate private methods in Objective-C. That way, you can define your methods where you want in the file without having to put them into the header file for all the world to see.
You can create new categories for any class, including Cocoa classes like NSString, etc.
Message was edited by: etresoft