How to optimise route in google map using Google map client java api.

Question

I am getting route details for list of latitude and longitudes like this,

DirectionsRoute[] routes = DirectionsApi.newRequest(context)
                .mode(TravelMode).origin(startPoint).destination(endPoint)
                .waypoints(wayPoints).await();

But the routes that i am getting are not optimised so i want to optimise route by using google java client api.

In google map javascript api we can optimise by giving boolean attribute like this

 {
  origin: LatLng | String | google.maps.Place,
  destination: LatLng | String | google.maps.Place,
  travelMode: TravelMode,
  drivingOptions: DrivingOptions,
  waypoints[]: DirectionsWaypoint,
  optimizeWaypoints: boolean
}

But how to achieve this using Google maps java client api?

Answer 1

You can use the optimizeWaypoints method. Make sure that you use the latest (0.1.16) version of google-maps-services:

dependencies {
    compile 'com.google.maps:google-maps-services:0.1.16'
}

<dependency>
    <groupId>com.google.maps</groupId>
    <artifactId>google-maps-services</artifactId>
    <version>0.1.16</version>
</dependency>

In your code:

DirectionsRoute[] routes = DirectionsApi.newRequest(context)
    .mode(TravelMode)
    .origin(startPoint)
    .destination(endPoint)
    .waypoints(wayPoints)
    .optimizeWaypoints(true) // Add this
    .await();