깐따삐아 Funs

헤더 파일에 추가:

IBOutlet UIButton *toggleButton;

 BOOL toggleIsOn;


@property (nonatomic, retain) IBOutlet UIButton *toggleButton;

구현 파일:

- (IBACtion)toggle:(id)sender
{
  if(toggleIsOn){
    //do anything else you want to do.
  }
  else {
    //do anything you want to do.
  }
  toggleIsOn = !toggleIsOn;
  [self.toggleButton setImage:[UIImage imageNamed:toggleIsOn ? @"on.png" :@"off.png"] forState:UIControlStateNormal];
}

then link your button with the IBActions and the IBOutlet and initialize toggleIsOn to NO.