title: listener vs handler in android
body: <p>What is the difference between a listener and handler?</p>
  
  <p>I have searched a lot, but I couldn't find a suitable explanation.  Where do I use a listener and where do I use a handler in Android?</p>
  
  <p>I have gone through the following link as well:</p>
  
  <p><a href="https://stackoverflow.com/questions/5080204/are-event-handler-event-listener-and-event-registration-all-referring-to-the-s">Are event handler, event listener, and event registration all referring to the same thing?</a></p>
  
  <p>Where can I get a comparative discussion of these two items?  Also, can anyone tell me what are the different kinds of listener and handler available?</p>