Angry birds like Floating menu on Android
<p>Does anyone know how to make a floating menu like the ones in Angry Birds home screen? </p>

<p>Here is a picture showing the menu buttons in collapsed mode (gear, up buttons). On tapping these buttons, the actual menu would expand, showing two or more round buttons.</p>

<p><img src="http://i.stack.imgur.com/KAtcI.jpg" alt="alt text"></p>

<p>Any links, clues is much appreciated. </p>
