title: Position a normal button under appbar Android
body: <p>I have a simple layout with an appbar and contents under it. I want to put a button anchored to the appbar like if it is a floating button.</p>
  
  <p>I used attribute <code>layout_anchor</code> and it worked only in parts because the appbar cover the button top part.</p>
  
  <p>The result looks like this:
  <img src="https://i.stack.imgur.com/gFpC2.png" alt="Screen"></p>
  
  <p>Can anyone help me?</p>