title: On iOS, is there a way to add the method addTarget to UIImageView?
body: <p>I just found that a <code>UIButton</code> object has a method <code>addTarget</code> to handle UI events, but a <code>UIImageView</code> object doesn't have such a method, so we can't do it in code, and can't add such an Action using Interface Builder for a <code>UIImageView</code> object either.  A gesture recognizer can be used, but is there a simple way to add <code>addTarget</code> to <code>UIImageView</code> so that our code is not partly handled by gesture recognizer and partly handled by the <code>addTarget</code> method?</p>