title: Activity window on standard call screen - to Enable buttons
body: <p>I would like to add a small window (Popup) on call screen activity. 
  <strong>Google voice</strong> and <a href="http://areacellphone.com/2010/04/android-worldcallplaceandtime-apps-know-place-and-time-of-inoutgoing-call/" rel="nofollow">worldcallplaceandtime</a> are both adding the same window during a call.</p>
  
  <p>The problem is that when I open a new activity on the top part of the screen, the rest of the buttons are disabled (End call, Mute etc). The only option to click the end call button is only when I close the new activity that was added. </p>
  
  <p>Can anyone please tell me how can I add a small window one the screen and still be able to use the call standard buttons?</p>