title: Android google v2 marker
body: <p>i have problem with google map v2 marker</p>
  
  <p>so.. create marker on map works fine but... I after 12s change position and i want marken setPosition not to create new marker so my code</p>
  
  <pre><code>Timer timer = new Timer();
      timer.scheduleAtFixedRate(new TimerTask(){
  
          GetDataFromWeb GDFW = new GetDataFromWeb();
  
          public void run() {
  
              GDFW.doInBackground("a");
              GDFW.execute(); 
  
              for(int i = 0; i &lt; GDFW.getList().size(); i++){
  
                  lat = Double.valueOf(GDFW.getList().get(i).lat);
                  log = Double.valueOf(GDFW.getList().get(i).lot);
  
                  contactList.add(new LatLng(lat, log));
  
              }
  
                  marker(m);  
  
          }
  </code></pre>
  
  <p>}, 12000, 12000);</p>
  
  <p>i add in list lat and log when i create new marker on map</p>
  
  <pre><code>Runnable updateMarker = new Runnable() {
  
           GetDataFromWeb GDFW = new GetDataFromWeb();
  
              public void run() {
  
                   for (LatLng latLon : contactList) {
  
                          marker = map.addMarker(new MarkerOptions()
                              .position(latLon)
                              .title("Hello world")
                          );
                   }
  
  
               contactList.clear(); 
  
           }
       };
       handler.postDelayed(updateMarker, MARKER_UPDATE_INTERVAL);
      }
  </code></pre>
  
  <p>adter create marker how in marker setPostition? not clear all marker and create new</p>