title: Remove an imageview automatically after 5 seconds of no activity
body: <p>I have developed an application with one module that has one <code>UIImageView</code> on <code>self.view</code>. Over that <code>imageview</code>, the user can do a few operations that are working fine. My issue is that if the user is not interacting with that <code>imageview</code> then the <code>imageview</code> will have to be removed from <code>self.view</code> automatically after 5 seconds. How can I implement this? Do I need to use a timer or something else? </p>