Question

I am working on a app that starts a timer when you begin holding the button, when you release from holding the button the timer must stop. I have a Touch Up Inside IBAction that starts the timer, but is there another UI Action I can use to detect that the user is still holding onto the button. I have another method for when it’s released. Can you guys help with logistics? Thanks!

Answer 1

Start the timer on the control event UIControlEventTouchDown and stop it on the control event UIControlEventTouchUpInside.

UIControlEventTouchDown will fire once the user “presses down” on the button.
UIControlEventTouchUpInside will fire once the user releases the button.

If you want to see what state the button is in, check its state property.