title: How to make my screen to listen to drag listener, android
body: <p>I was trying to implement a drag down listener on my android app, and make a layout which is in view.GONE state animate and increase upto certain height as I drag down. </p>
  
  <p>I tried using OnTouchListener Action Down and Action Up but it is not helping me.</p>
  
  <p>How to achieve this?</p>
  
  <p>Layout1(App_Header)</p>
  
  <p>Layout2(MapView)</p>
  
  <p>Layout3(ViewPager)</p>
  
  <p>Layout 2 is hidden(View.GONE) after pressing a button.</p>
  
  <p>now by dragging down the screen from the header I should get back my Layout2(MapView) increasing its height as I drag down.</p>
  
  <p>I also tried using DragListener to PagerTabStrip on Layout 3, but it didn't work. </p>
  
  <p>Are there any one who can help me on this?</p>