title: Issue in handling Key ENTER event in search interface of an android fragment
body: <p>I am using search interface in one of my fragments. I want to handle <strong>"Enter KeyEvent"</strong> in the edittext of the search interface.Whenever the user presses enter in the edittext of the search I want to do something that time. I can make use of onTextSubmit() method but its not detecting the enter key press event when the edittext is empty. </p>
  
  <p>But I want to handle the enter key event when the edit text is empty.Can someone help me ?</p>