title: How to pin linearlayout below toolbar while scrolling
body: <p>I want to achieve something like the image shown below</p>
  
  <p><a href="https://i.stack.imgur.com/MO1Sk.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MO1Sk.gif" alt="image"></a></p>
  
  <p>I would like to paste a linearlayout under the toolbar and make it appear at a given moment during the scroll</p>