code: public double calculateDistance(double srcLat, double srcLong, double destLat, double destLong) {
  		float[] results = new float[1];
  		Location.distanceBetween(srcLat, srcLong, destLat, destLong, results);
  		return results[0] / 1000;
  	}
docs: /*
  @return: Distance in kilometers between this src location and the specified destination