title: Android imagebutton: how to remove tinted rectangle around image?
body: <p>I'm developing and Android app. I have a main menu with lots of imagebuttons, each of which takes the user to a new view on click.</p>
  
  <p>The problem I'm having is that surrounding each icon is a tinted rectangle that changes to a light blue colour when tapped. How do I remove this transparent square in the .xml layout file?</p>
  
  <p>Many thanks in advance,</p>