Question

It’s not difficult to hide a UIButton typically, but I have it set to an IBAction instead of IBOutlet. This is necessary because when the button is pressed, text pops up, but then I want the button to disappear. What is the solution?

Answer 1

You probably declared your IBAction like:

- (IBAction)myButtonAction;

It should be:

- (IBAction)myButtonAction:(id)sender;

Because then you can do in the method

- (IBAction)myButtonAction:(id)sender
{
    if([sender respondsToSelector:@selector(setHidden:)])
        [sender setHidden:YES];
}

All IBActions can support receiving their sender as a function. However, if a different UI element calls that function, it too will be hidden. Also, with the method above you’ll be unable to un-hide the button, and if you need to do that, you’d probably be better off having an IBOutlet – in 5.0+ you can use the weak keyword which does not retain a reference and is automatically nilled if the object is destroyed, and in 4.x you’ll just have to remember to set it to nil on viewDidUnload.