fetchDirection

 private void fetchDirection(List<Steps> stepsList) {
        Log.d("debug", "size list awal: " + latLngList.size());
        for (Steps data : stepsList) {
            // add start
            latLngList.add(new LatLng(data.getStartLocation().getLat(), data.getStartLocation().getLng()));

            // decode poly
            List<LatLng> decodedPoly = Utils.decodePoly(data.getPolyline().getPoints());
            for (LatLng point : decodedPoly)
                latLngList.add(new LatLng(point.latitude, point.longitude));

            latLngList.add(new LatLng(data.getEndLocation().getLat(), data.getEndLocation().getLng()));
            // add end
        }
        Log.d("debug", "size list akhir : " + latLngList.size());

        drawDirectionToMap(latLngList);
    }