private void onTrackPointStart(Attributes attributes){
  latitude=attributes.getValue(ATTRIBUTE_LAT);
  longitude=attributes.getValue(ATTRIBUTE_LON);
  altitude=null;
  time=null;
}

private void onTrackPointStart ( Attributes attributes ) { latitude = attributes . getValue ( ATTRIBUTE_LAT ) ; longitude = attributes . getValue ( ATTRIBUTE_LON ) ; altitude = null ; time = null ; }
on track point start .
