addPolyline

private fun addPolyline() {
    locationService?.locationList?.let{locationList ->

        runningPathPolyline?.let{
            val toLocation = locationList[locationList.size - 1]
            val to = LatLng(
                toLocation.latitude,
                toLocation.longitude
            )
            val points = it.points
            points.add(to)
            it.points = points
        } ?: run{
            if (locationList.size > 1) {
                val fromLocation = locationList[locationList.size - 2]
                val toLocation = locationList[locationList.size - 1]

                val from = LatLng(
                    fromLocation.latitude,
                    fromLocation.longitude
                )

                val to = LatLng(
                    toLocation.latitude,
                    toLocation.longitude
                )

                this.runningPathPolyline = map.addPolyline(
                    PolylineOptions()
                        .add(from, to)
                        .width(polylineWidth.toFloat()).color(Color.parseColor("#801B60FE")).geodesic(true)
                )
            }
        }
    }

}