How do I really know when a UIButton has been released?

Question

I'm running into an issue where I have a UIButton in which I want to track press/release events. So I am tacking on to the Touch Down/Touch Up events. Unfortunately, in certain situations this won't track Touch Up events -- for instance, if an Alert pops up.

- (IBAction)buttonDown:(id)sender;
- (IBAction)buttonUp:(id)sender;

How do I ensure that the view controller is notified when the button goes from pushed/normal state, no matter what the reason?

Answer 1

Try this method:

[myButton addTarget: target action: @selector(buttonUp:) forControlEvents: UIControlEventTouchUpInside];

Answer 2

Are you trying to detect if the buttons are being pressed or released while the UIAlert view is currently on top or has it been dismissed and the button presses are no longer responsive?