How do I draw a route, along an existing road, between two points?

Question

I want to show the driving route between two locations in my android app. I want to draw the route only on top of road segments.

There are several answers on stack o

Answer 1

You can use this library, and it's simple, check example of usage:

Routing routing = new Routing.Builder()
    .travelMode(AbstractRouting.TravelMode.DRIVING)
    .withListener(this)
    .alternativeRoutes(true)
    .waypoints(start, end)
    .build();
routing.execute();


@Override
public void onRoutingSuccess(List route, int shortestRouteIndex) {
    progressDialog.dismiss();
    CameraUpdate center = CameraUpdateFactory.newLatLng(start);
    CameraUpdate zoom = CameraUpdateFactory.zoomTo(16);

    map.moveCamera(center);

    if(polylines.size()>0) {
        for (Polyline poly : polylines) {
            poly.remove();
        }
    }

    polylines = new ArrayList<>();
    // Add route(s) to the map.
    for (int i = 0; i 

And don't forget to add key using builder from example, if you getting warnings about keyless access (you should have billing account to use it with key)