title: How to show a balloon above a marker in a MapActivity? Isn't there a widget?
body: <p>I dont get the point, why I have to code so much for it. Like, I dont want to care about... </p>
  
  <ul>
  <li>the position of the balloon (I just want to assign a geopoint)</li>
  <li>the layout of a basic balloon (Later on I might want to implement a xml based layout)</li>
  <li>the number of shown
  balloons (only display one at a time)</li>
  <li>the open/close
  behaviour of the balloon (close, when an other bollon is tabbed)</li>
  </ul>
  
  <p><strong>Update</strong></p>
  
  <p>Solved it! See my answer below...</p>