Simple KVO example

Question

I am trying to do simple KVO example, but I am having problems.

This is my *.m file:

#import \"KVO_ViewController.h\"

@interface KVO_ViewController (         


        

Answer 1

KVO works with setter and getter and in incNumber you are directly accessing iVar so instead of that use self.number

- (IBAction)incNumber:(id)sender
{
    self.number++;
    NSLog(@"%d", self.number);
}