title: Open a float context menu from an action bar menu option
body: <p>I want to create a float context menu that shows when the user taps on an specific option from the action bar. This is my diagram made on a whiteboard.</p>
  
  <p><img src="https://i.stack.imgur.com/4D1WY.jpg" alt="enter image description here"></p>
  
  <p>I dont have time for using a mockup tool. I'm a beginner in android but I was doing some research about it. However, I have just came up with my action bar. </p>
  
  <p><img src="https://i.stack.imgur.com/EDvPf.png" alt="enter image description here"></p>
  
  <p>I found many tutorials are so complicated that I can not follow them.
  <strong>What would be a good way to start coding this feature?</strong></p>