gistfile1.txt

fun drawPath(src: LatLng, dest: LatLng) {
        addMarker(mGoogleMap,src,"My location",R.drawable.ic_startpoint)
        addMarker(mGoogleMap,dest,"Destination",R.drawable.ic_endpoint)
        doAsync {
            val path: MutableList<List<LatLng>> = ArrayList()
            val urlDirections = "https://maps.googleapis.com/maps/api/directions/json?origin=${src.latitude},${src.longitude}&destination=${dest.latitude},${dest.longitude}&key=${Constant.ggMapApiKey}"
            val directionsRequest = object : StringRequest(Request.Method.GET, urlDirections, Response.Listener<String> {
                    response ->
                val jsonResponse = JSONObject(response)
                // Get routes
                val routes = jsonResponse.getJSONArray("routes")
                val legs = routes.getJSONObject(0).getJSONArray("legs")
                val steps = legs.getJSONObject(0).getJSONArray("steps")
                for (i in 0 until steps.length()) {
                    val points = steps.getJSONObject(i).getJSONObject("polyline").getString("points")
                    path.add(PolyUtil.decode(points))
                }
                for (i in 0 until path.size) {
                    mGoogleMap.addPolyline(PolylineOptions().addAll(path[i]).color(Color.BLUE).width(5.0f))
                }
            }, Response.ErrorListener {
                    _ ->
            }){}
            val requestQueue = Volley.newRequestQueue(this)
            requestQueue.add(directionsRequest)
        }.execute()
    }