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I have a problem when I’m reading iOS’s document for Event Types and Delivery. For this:
If the first responder or the hit-test view doesn’t handle an event
What does ‘handle an event’ mean?
Handle an event means that there is a method that is called when the event is fired. For instance, if you click on a button and there is a method that is called when that button is clicked, that acts in response to the button, then it handles the event.