Rendering the route line requires layer specification

Opening this issue as there are a few places where it does not work by default, and it seems there are many approaches to get the same answer. Each of which needs to specify relative layers.

  private val maneuverArrowBinder: ManeuverArrowBinder by lazy {
    val routeArrowOptions = RouteArrowOptions.Builder(this.requireContext())
            .withAboveLayerId("road-exit-shield")
            .build()
    val routeArrowView = MapboxRouteArrowView(routeArrowOptions)
    val routeArrowApi = MapboxRouteArrowApi()
    ManeuverArrowBinder(
            this,
            routeArrowApi,
            routeArrowView,
            routesViewModel
    )
  }

  private val options: MapboxRouteLineOptions by lazy {
    MapboxRouteLineOptions.Builder(activity)
            .withRouteLineResources(routeLineResources)
            .withRouteLineBelowLayerId("road-label")
            .build()
  }

    private val routeArrowOptions by lazy {
        RouteArrowOptions.Builder(mainCarContext.carContext)
            .withAboveLayerId(PRIMARY_ROUTE_TRAFFIC_LAYER_ID)
            .build()
    }

cc: @cafesilencio

Inizia tracciando i punti di ingresso RouteArrowOptions e MapboxRouteLineOptions mostrati nell’issue, inclusi withAboveLayerId e withRouteLineBelowLayerId. Confronta i percorsi di rendering delle frecce del percorso e delle linee del percorso per determinare quali valori predefiniti dei layer relativi mancano; il lavoro è completato quando i casi di rendering interessati funzionano senza richiedere ai chiamanti di specificare questi layer.