title: Toggle menu-to-arrow icon on Toolbar
body: <p>I need control the toggle of menu icon of Toolbar and transform to a arrow with animation. Not only when the user click and open or drag the drawer layout.</p>
  
  <p><img src="https://i.stack.imgur.com/tvXkf.png" alt="animation to this"></p>
  
  <p>I'm using the app compat v21.0</p>