gistfile1.java

  private void drawDirectionToMap(List<LatLng> latLngList) {
        PolylineOptions line = new PolylineOptions().width(3).color(Color.BLUE);
        for (int i = 0; i < latLngList.size(); i++) {
            line.add(latLngList.get(i));
        }
        mMap.addPolyline(line);
        mMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(latLngList.get(0).latitude, latLngList.get(0).longitude), 14));

        // add marker diawal
        mMap.addMarker(new MarkerOptions()
                        .position(new LatLng(latLngList.get(0).latitude, latLngList.get(0).longitude))
                        .title("starting point")
                        .icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_marker))
        );

        // add marker di akhir
        int index = latLngList.size() - 1;
        mMap.addMarker(new MarkerOptions()
                        .position(new LatLng(latLngList.get(index).latitude, latLngList.get(index).longitude))
                        .title("end point")
                        .icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_marker))
        );

        Toast.makeText(this, "Jalur berhasil digambar kak, hati2 dijalan pelan2 saja,,, ", Toast.LENGTH_SHORT).show();
    }