title: Floating widget / Overlay on Android launcher
body: <p>Does anyone have any idea how this can be implemented?</p>
  
  <p>Some examples:</p>
  
  <ul>
  <li><a href="https://play.google.com/store/apps/details?id=gpc.myweb.hinet.net.PopupVideo" rel="nofollow noreferrer">https://play.google.com/store/apps/details?id=gpc.myweb.hinet.net.PopupVideo</a></li>
  <li><a href="https://play.google.com/store/apps/details?id=com.milone.floatwidget" rel="nofollow noreferrer">https://play.google.com/store/apps/details?id=com.milone.floatwidget</a></li>
  </ul>
  
  <p>Any idea? Thanks.</p>