title: Remove a line from PolyLine map in Google Map android V2?
body: <p>I have searched in google and find this <strong><a href="https://stackoverflow.com/questions/15155822/issue-with-removing-polyline-google-map-v2-android">answer</a></strong> where i can remove all polyLine of a Map. 
  But I want to remove only a particular line from the poly Line. For Example I want to remove the line from 2nd to 3rd LatLng in the given code. I want to change color of a particular line of a  polyLine or make it transparent. And I  also want to add a <code>clickListener</code> to <strong>PolyLine</strong> </p>
  
  <pre><code>   PolylineOptions rectOptions = new PolylineOptions()
              .add(new LatLng(37.35, -122.0))
              .add(new LatLng(37.45, -122.0))  // North of the previous point, but at the same longitude
              .add(new LatLng(37.45, -122.2))  // Same latitude, and 30km to the west
              .add(new LatLng(37.35, -122.2))  // Same longitude, and 16km to the south
              .add(new LatLng(37.35, -122.0)).width(5).color(Color.RED);; // Closes the polyline.
  
  Polyline polyline = myMap.addPolyline(rectOptions);
  </code></pre>
  
  <p>Main goal is to <code>remove/make it transparent</code> a particular line of a PolyLine on click or tap.</p>
  
  <pre><code>PolylineOptions line= new PolylineOptions().add(HAMBURG,// these are latlong
                                                              KIEL,
                                                              KIEL2,
                                                              KIEL3
                                                          new LatLng(40.748963847316034,
                                                                     -73.96807193756104)
                                                              )
                                                     .width(5).color(Color.RED);
  
  
  
                      Polyline polyline=  googleMap.addPolyline(line);
  </code></pre>
  
  <p>And i want to remov line between KIEL1 and KIEL2</p>