title: How to know container of TapGesture Recgoinizer in Swift
body: <p>I want to know the container of an <code>UITapGestureRecognizer</code> in Swift</p>
  
  <p>For example, if I put a <code>UITapGestureRecognizer</code> in <code>View1</code></p>
  
  <p>When <code>UITapGestureRecognizer</code> action is triggered, how do I know that <code>View1</code> is the container of that <code>UITapGestureRecognizer</code>?</p>