title: How to hide and show a layout on scrolling down a scroll view in Android?
body: <p>I have a particular layout which consist a scroll view and an image which is at bottom of the activity. My question is that when I start scrolling up that image will not visible and when the scroll reach to top it is visible again.</p>
  
  <p>I attached my image link so that you get the idea what I want.</p>
  
  <p><a href="https://i.stack.imgur.com/nhmfN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/nhmfN.png" alt="https://drive.google.com/open?id=1PoTGvwtGL3gN8uMtF86TjG1FtrWTDCzP"></a></p>