title: SearchView listen for IME actions
body: <p>How can I listen for IME actions on a <code>SearchView</code>? Since it is not a subclass of <code>EditText</code>.</p>
  
  <p>What I want to do is to handle when the user presses the "enter" key on the keyboard <strong>and there is no text entered.</strong></p>
  
  <p>The problem with there being no text is that <code>OnQueryTextListener.onQueryTextSubmit()</code> is only triggered if the user has entered text.</p>