HERE SDK Color only part of the route

问题

Is there a way to color only a part of the route in a different color? Like drawing a polyline but one that takes the road configuration into consideration.

回答1:

No, that is not supported. But if you are wondering about changing only the traveled portion color I previously answered here.

回答2:

You can extract the route geometry to get the list of GeoCoordinates constituing the polyline:

geoCoordinates = mapRoute.getRoute().getRouteGeometry()

Then you can draw portions of the route in various colors by building new polylines from these coordinates:

GeoPolyline geoPolyline = new GeoPolyline();
for (GeoCoordinates point : geoCoordinates) {
    if (<your condition>){
        geoPolyline.add(point);
    }
}
MapPolyline mapPolyline = new MapPolyline(geoPolyline);
mapPolyline.setLineColor(<color>);
map.addMapObject(mapPolyline)

来源：https://stackoverflow.com/questions/44621476/here-sdk-color-only-part-of-the-route