Multiple Markers on Google Map in Android

[Raihan Jamal]

I am trying to insert Multiple Marker on the google map but I am not able to do... Can anybody let me know what wrong i am doing...
this is my below code...

  class InterestingLocations extends ItemizedOverlay {
    	private List<OverlayItem> locations = new ArrayList<OverlayItem>();





    	private Drawable marker;
    	public InterestingLocations(Drawable marker)
    	{
    	super(marker);
    	this.marker=marker;
    	// create locations of interest
    	
    	
    	
    	
    	
    	for(int y=0;y<value2;y++)
        {
       
      Log.i(TAG, "Sorted Distance_23: " + "|"+distance[y][2] +"|"+ distance[y][3] +"|"+s1[y] );
    	
      double latitude = 0;
      try
      {
           latitude = (double)(distance[y][2]);
      }
      catch(Exception e)
      {
      }
      double longitude = 0;
      try
      {
           longitude = (double)(distance[y][3]);
      }
      catch(Exception e)
      {
      }
      
      GeoPoint a = new
    	GeoPoint((int)(latitude),(int)(longitude));
    	//GeoPoint disneySevenLagoon = new
    	//GeoPoint((int)(28.410067*1000000),(int)(-81.583699*1000000));
      OverlayItem overlayitem = new OverlayItem(a, "", "");
    	locations.add(new OverlayItem(a ,
    	"Data", "Data"));
    	//locations.add(new OverlayItem(disneySevenLagoon ,
    	//"Seven Lagoon", "Seven Lagoon"));
    	populate();
    	
        }
    	}  

[Raihan Jamal]

In the above code it is showing the marker but it is not showing the map... whole screen is blue.. and marker is shown over that blue screen...
Somebody please help..

[Tim Holloway]

Check your latitude, longitude and scaling. There's about a 75% chance that your code is working except for the part where the area being displayed is ocean.