title: Toolbar Background Image Size
body: <p>I am working in android application. Actually there I have to set an image in place of toolbar. But I don't know what the exact sizes of that image. 
  I am not asking about actionbar size. I googled it a lot but unable to find the solution. </p>
  
  <p>here is my requirement </p>
  
  <p><a href="https://i.stack.imgur.com/bYb7u.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bYb7u.jpg" alt="enter image description here"></a></p>