title: Disable Ripple effect on Custom Actions in Android Auto
body: <p>I am implementing Android Auto into an existing music application. I have added an empty action button to correctly position my other action buttons. But this empty action button still have a click and shows ripple effect when clicked, which I would like to disable (Reference Image below).</p>
  <p><a href="https://i.stack.imgur.com/9lSxI.png" rel="nofollow noreferrer">Ripple effect on empty action button</a></p>
  <p>Any help to disable click and ripple effect for this button would be appreciated.</p>