GMapsDirectionsService.java

package cc.routing.gmaps.service

import com.google.maps.DirectionsApi;
import com.google.maps.DirectionsApiRequest;
import com.google.maps.GeoApiContext;
import com.google.maps.model.DirectionsRoute;
import com.google.maps.model.LatLng;
import com.google.maps.model.TravelMode;

public class GMapsDirectionsService {

	private static final String API_KEY = "SET_API_KEY_HERE";

	public static void main(String[] args) {
	
		GMapsDirectionsService service = new GMapsDirectionsService();
		DirectionsRoute directions = service.getDirections();
		System.out.println(directions.legs.length);
		
	}
	
	public DirectionsRoute getDirections() {
		try {
			GeoApiContext apiContext = new GeoApiContext();
			apiContext.setApiKey(API_KEY);

			DirectionsApiRequest request = DirectionsApi.newRequest(apiContext);
			request.mode(TravelMode.DRIVING);
			request.origin(getUfrgsAsOrigin());
			request.destination(getUmovmeAsDestination());
			request.waypoints(getWaypoints());
			
			return request.await()[0];
			
		} catch (Exception e) {
			throw new RuntimeException("Error making route request",e);
		}
	}

	private String[] getWaypoints() {
		String mercadoPublicoPortoAlegre = "-30.0284528, -51.22809719999998";
		String monumentoAoLacador = "-30.0346471, -51.217658400000005";
		String[] waypoints = { mercadoPublicoPortoAlegre, monumentoAoLacador };
		return waypoints;
	}

	private LatLng getUmovmeAsDestination() {
		return new LatLng(-30.0121269, -51.19688150000002);
	}

	private LatLng getUfrgsAsOrigin() {
		return new LatLng(-30.0322574, -51.22044390000002);
	}

}