title: How to display a view on top of another view in same activity
body: <p>I am have an activity in android application . It displays a view (lets say <strong>CurrentView</strong>)with a button in the centre of the screen . I am setting the content of the activity using :
  setContentView(R.layout.layout_xml_file);
  The layout xml file defines the button.</p>
  
  <p>My requirement is that , when user clicks on the button , i need to show another view (lets say <strong>NewView</strong>)containing a listView on Current View.
  The <strong>NewView</strong> transition should happen like this :
  It should start from bottom of the screen and should take some proportion of the screen , say 3/4 or 1/2 . I mean the view's height should be configurable .
  This <strong>NewView</strong> should be in the same activity . I do not want to create another activity for displaying it.
  I don't understand which android widget is should use for holding the <strong>NewView</strong></p>
  
  <p>Thanks. Your help is appreciated ...</p>