title: how to implement Floating-Navigation-View in android
body: <p>i am trying to implement floating navigation-view which look like this<a href="https://i.stack.imgur.com/rfCBa.gif" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/rfCBa.gif" alt="enter image description here"></a></p>
  
  <p>please help me how to implement this...thank you in advance</p>