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Without subclassing a UIResponder class(e.g. UIView) and overriding its touchesBegan:withEvent: method, is it possible to get informed of touch events of a UIResponder class?
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Your question is somewhat confusing…’without subclassing UIResponder…can you get informed of touch events of UIResponder?’ Are you asking if you can add touchesBegan/Moved/Ended/Cancelled events to any NSObject?!? I’m not comfortable enough with the framework yet to know for sure if those methods would be called if they were implemented as a category on or subclass of NSObject?!?
But, regardless of what you’re doing, the top (end) of the responder chain is UIApplication (also a subclass of UIResponder) and if you have an iPhone app then you have a singleton of UIApplication which you can query for touch events…