title: Popup over incoming-call screen
body: <p>I want to create a customized popup over the android's incoming call screen where I wish to add information for the user.
  I want the popup to not disable any clickability from the background so that the user could still answer the call.</p>
  
  <p>I know it is possible since many applications do it, e.g. <a href="https://market.android.com/details?id=com.mezeze" rel="noreferrer">MeZeZe app</a>:
  <img src="https://i.stack.imgur.com/jL7uh.jpg" alt="enter image description here"></p>
  
  <p><strong>Some more information</strong>:</p>
  
  <ol>
  <li>A translucent theme did not work since it cancels the former activity's clickability.</li>
  <li>A toast is not an option - I don't want it to disappear.</li>
  <li>I know there are many similar threads - I read many of them and none answer my specific problem.</li>
  <li>I already know how to "make something happen" once a call is receiver, so no need for INCOMING_CALL activity tips.</li>
  </ol>
  
  <p>Would appreciate any help!
  Thanks </p>