title: Scroll HorizontalListView on ButtonClick on either side
body: <p>I have a <code>HorizontalScrollView</code> I want to scroll it towards left and Right on <code>Button</code> click.
  I have refered this post <a href="https://stackoverflow.com/questions/16079486/scrolling-a-horizontalscrollview-by-clicking-buttons-on-its-sides">Here</a></p>
  
  <p>But I'm not able to scroll it toward the left.As here <code>getScrollX()</code> gives the leftEdge of View.</p>
  
  <p>So my Question is How could I make it scroll towards the left Side of <code>View</code> on btnClick.</p>
  
  <p>Any Answer is Highly Appreciated..Thks</p>