title: android google maps v2: resize polygon
body: <p>I want to draw polygon on google maps which may be resized. Any marker removed successfully by onMarkerClick but I can't change marker position by drag it to another place.
  Here is my code:</p>
  
  <pre><code>        PolygonOptions polygon = new PolygonOptions(); 
          Polygon my_polygon ;
          polygon.fillColor(Color.RED);
  ....
  @Override
  public boolean onMarkerClick(Marker arg0) {
      my_polygon.remove();
      arg0.remove();
      polygon.getPoints().remove(arg0.getPosition()); //it's ok, marker deleted
  
      return true;
  }
  
   @Override
    public void onMarkerDrag(Marker marker)
    {  
        polygon.getPoints().remove(marker.getPosition()); //marker still in polygon list
  
    }
    @Override
    public void onMarkerDragStart(Marker marker)
    {  
  
    polygon.getPoints().remove(marker.getPosition());  //marker still in polygon list
  
  
    }
    @Override
    public void onMarkerDragEnd(Marker marker)
    {  
        my_polygon.remove(); 
        polygon.getPoints().remove(marker.getPosition());  //marker still in polygon list
      polygon.add(marker.getPosition());
    my_polygon=map.addPolygon(polygon); //created new polygon which contains previous marker position
    }
  </code></pre>
  
  <p>So, how can I remove previus marker points correctly?</p>