设置车辆的目的地

本部分介绍了在服务器将行程与车辆匹配后如何设置车辆的目的地。

准备工作

本部分要求您完成以下操作：

• 初始化驱动程序 SDK
• 准备好车辆
• 在 Fleet Engine 中创建行程

在驾驶员应用中设置目的地

将乘客与司机配对后，您必须按照以下步骤在司机应用中配置行程目的地：

1. 从车辆在舰队中的航点集合中检索车辆的目的地 引擎，由 GetTrip()、UpdateTrip() 和 GetVehicle() 返回。

2. 通过调用 Navigation SDK for Android 方法来设置目的地 setDestination()。

   注意：为了让消费者应用能够正确呈现行程，请确保向 setDestination() 提供的地理纬度/经度坐标与行程的航点中的坐标一致。如需了解详情，请参阅教程 路由至单个目的地和路由至多个目的地。

以下示例展示了如何在驱动程序中设置目的地 应用。

Java

private void navigateToLocation(LatLng locationLatLng, RoutingOptions routingOptions) {
  Waypoint destination = Waypoint.newBuilder().setLocation(locationLatLng).build();

  // Create a future to await the result of the asynchronous navigator task.
  ListenableResultFuture<Navigator.RouteStatus> pendingRoute =
      mNavigator.setDestination(destination, travelMode);

  // Define the action to perform when the SDK has determined the route.
  pendingRoute.setOnResultListener(
      new ListenableResultFuture.OnResultListener<Navigator.RouteStatus>() {
        @Override
        public void onResult(Navigator.RouteStatus code) {
          switch (code) {
            case OK:
              // Hide the toolbar to maximize the navigation UI.
              if (getActionBar() != null) {
                getActionBar().hide();
              }

              // Enable voice audio guidance (through the device speaker).
              mNavigator.setAudioGuidance(
                  Navigator.AudioGuidance.VOICE_ALERTS_AND_GUIDANCE);

              // Simulate vehicle progress along the route for demo/debug builds.
              if (BuildConfig.DEBUG) {
                mNavigator.getSimulator().simulateLocationsAlongExistingRoute(
                    new SimulationOptions().speedMultiplier(5));
              }

              // Start turn-by-turn guidance along the current route.
              mNavigator.startGuidance();
              break;
            // Handle error conditions returned by the navigator.
            case NO_ROUTE_FOUND:
              displayMessage("Error starting navigation: No route found.");
              break;
            case NETWORK_ERROR:
              displayMessage("Error starting navigation: Network error.");
              break;
            case ROUTE_CANCELED:
              displayMessage("Error starting navigation: Route canceled.");
              break;
            default:
              displayMessage("Error starting navigation: "
                  + String.valueOf(code));
          }
        }
      });
}

Kotlin

private fun navigateToLocation(locationLatLng: LatLng, travelMode: RoutingOptions) {
  val destination = Waypoint.newBuilder().setLocation(locationLatLng).build()

  // Create a future to await the result of the asynchronous navigator task.
  val pendingRoute = mNavigator.setDestination(destination, travelMode)

  // Define the action to perform when the SDK has determined the route.
  pendingRoute.setOnResultListener(
    object : ListenableResultFuture.OnResultListener<Navigator.RouteStatus>() {
      override fun onResult(code: Navigator.RouteStatus) {
        when (code) {
          Navigator.RouteStatus.OK -> {
            // Hide the toolbar to maximize the navigation UI.
            getActionBar()?.hide()

            // Enable voice audio guidance (through the device speaker).
            mNavigator.setAudioGuidance(Navigator.AudioGuidance.VOICE_ALERTS_AND_GUIDANCE)

            // Simulate vehicle progress along the route for demo/debug builds.
            if (BuildConfig.DEBUG) {
              mNavigator
                .getSimulator()
                .simulateLocationsAlongExistingRoute(SimulationOptions().speedMultiplier(5))
            }

            // Start turn-by-turn guidance along the current route.
            mNavigator.startGuidance()
          }
          Navigator.RouteStatus.NO_ROUTE_FOUND -> {
            displayMessage("Error starting navigation: No route found.")
          }
          Navigator.RouteStatus.NETWORK_ERROR -> {
            displayMessage("Error starting navigation: Network error.")
          }
          Navigator.RouteStatus.ROUTE_CANCELED -> {
            displayMessage("Error starting navigation: Route canceled.")
          }
          else -> {
            displayMessage("Error starting navigation: ${code.name}")
          }
        }
      }
    }
  )
}