Class RouteTask

  • All Implemented Interfaces:
    RemoteResource, Loadable

    public final class RouteTask
    extends Object
    implements Loadable, RemoteResource
    A task to compute routes and turn-by-turn directions.

    The RouteTask can be used in both online and offline workflows. To solve routes using an ArcGIS Network Analyst service hosted on ArcGIS Online or on-premises with ArcGIS for Server, create a RouteTask by passing in the URL of the service to the RouteTask(Context, String) constructor. Create a set of default parameters RouteParameters for solving a route with this RouteTask by calling createDefaultParametersAsync(). Get the modifiable list of Stop and add your stops to it. Solve the RouteTask by calling solveRouteAsync(RouteParameters), which returns a ListenableFuture for tracking when the operation is done and getting the RouteResult.

    
     // create RouteTask instance
     mRouteTask = new RouteTask("http://www.yourserver.com/arcgis/rest/services/NetworkAnalysis/CA/NAServer/Route");
     .....
    
     // get default parameters
     mRouteParameters = mRouteTask.createDefaultParametersAsync().get();
    
     // get List of Stops
     List<Stop> routeStops = mRouteParameters.getStops();
    
     // add your stops to it
     routeStops.add(new Stop(new Point(-13045663.744, 4039204.580, WEB_MERCATOR)));
     routeStops.add(new Stop(new Point(-13052490.008, 4035542.739, WEB_MERCATOR)));
    
     // solve
     RouteResult result = mRouteTask.solveRouteAsync(mRouteParameters).get();
     List<Route> routes = result.getRoutes();
     mRoute = routes.get(0);
    
     
    Alternatively to work offline and solve routes using a network dataset stored in a local geodatabase, pass the path to the database to the RouteTask(Context, String, String) constructor. To use a network dataset stored in a Mobile Map Package (MMPK), use the RouteTask(Context, TransportationNetworkDataset) constructor.

    Use this task to find routes between any given locations based on different criteria - the quickest, shortest, most scenic, and so on. The route returned depends on the impedance chosen by the user. For example, if the impedance is time, then the best route is the quickest route. Hence, the best route can be defined as the route that has the lowest impedance. Use RouteParameters.getAccumulateAttributeNames() to set these constraints.

    Since:
    100.0.0
    • Constructor Detail

      • RouteTask

        public RouteTask​(android.content.Context context,
                         String url)
        Creates a RouteTask with the given URL to a route layer in an ArcGIS Network Analyst service. The service may be hosted in the cloud on ArcGIS Online or on-premises with ArcGIS for Server.
        Parameters:
        context - the Context in which the task is running
        url - online resource for routing
        Throws:
        IllegalArgumentException - if context is null or url is null or empty
        Since:
        100.1.0
      • RouteTask

        public RouteTask​(android.content.Context context,
                         String databasePath,
                         String networkName)
        Creates a RouteTask using the given path to the geodatabase and transportation network dataset name.
        Parameters:
        context - the Context in which the task is running
        databasePath - the path to file to create the data from
        networkName - the name of the network
        Throws:
        IllegalArgumentException - if databasePath or networkName is null or empty, or if context is null
        Since:
        100.0.0
      • RouteTask

        public RouteTask​(android.content.Context context,
                         TransportationNetworkDataset dataset)
        Creates a RouteTask from a transportation network dataset.
        Parameters:
        context - the Context in which the task is running
        dataset - the transport network dataset for the route task
        Throws:
        IllegalArgumentException - if dataset or context is null
        Since:
        100.0.0
    • Method Detail

      • createDefaultParametersAsync

        public ListenableFuture<RouteParameters> createDefaultParametersAsync()
        Executes an asynchronous operation to create a set of default parameters for solving a route with this route task.
        Returns:
        a ListenableFuture for tracking when the operation is done and getting the result; also allows cancellation. Calling get() on the returned future may throw an ExecutionException if the operation fails.
        Since:
        100.0.0
      • createParametersAsync

        public ListenableFuture<RouteParameters> createParametersAsync​(FeatureCollection featureCollection)
        Creates route parameters for this route task from a feature collection that contains stops, route info, and barriers tables.

        The route parameters created from the feature collection will be adjusted to this RouteTask. RouteTask searches the following table names in feature collection:

        • "Stops" for importing stops. Required.
        • "RouteInfo" for importing route info. Optional.
        • "Barriers" for importing point barriers. Optional.
        • "PolylineBarriers" for importing polyline barriers. Optional.
        • "PolygonBarriers" for importing polygon barriers. Optional.

        Please note:

        Parameters:
        featureCollection - the feature collection that contains stops, and optionally also contains route info, and barriers tables
        Returns:
        a ListenableFuture for tracking when the operation is done and getting the result; also allows cancellation. Calling the get() method on the ListenableFuture may throw an ExecutionException if the operation fails.
        Throws:
        IllegalArgumentException - if featureCollection is null
        Since:
        100.1.0
        See Also:
        TravelMode, RouteTaskInfo
      • createParametersAsync

        public ListenableFuture<RouteParameters> createParametersAsync​(PortalItem portalItem)
        Imports route parameters from a portal item and then adjusts the imported parameters to the current Route task.

        Travel mode will be null if it could not be created from the route layer settings for the route task's network. In the case that the travel mode is null then the client can override it with another travel mode (for example obtained from RouteTaskInfo. Accumulate attributes from Route Info table are going to be applied only if they exist in transportation network restriction and cost attributes.

        Parameters:
        portalItem - the portal item containing a feature collection that contains stops, route info, and barriers tables. Stops table is required.
        Returns:
        A listenable future that will contain the route parameters
        Throws:
        IllegalArgumentException - if portalItem is null
        Since:
        100.3.0
      • getRouteTaskInfo

        public RouteTaskInfo getRouteTaskInfo()
        Gets the metadata (specifying the default values of properties such as TravelModeName, SupportedLanguages.. etc.) about the ArcGIS Network Analyst service or the transportation network dataset being used by the route task.
        Returns:
        the metadata
        Since:
        100.0.0
      • getTransportationNetworkDataset

        public TransportationNetworkDataset getTransportationNetworkDataset()
        Gets the transportation network dataset being used by this route task. Returns null if the route task was created from a service URL.
        Returns:
        the transportation network dataset
        Since:
        100.0.0
      • solveRouteAsync

        public ListenableFuture<RouteResult> solveRouteAsync​(RouteParameters routeParameters)
        Executes an asynchronous operation to solve (calculate) the route based on the provided route parameters.
        Parameters:
        routeParameters - route parameters
        Returns:
        a ListenableFuture for tracking when the operation is done and getting the result; also allows cancellation. Calling get() on the returned future may throw an ExecutionException if the operation fails.
        Since:
        100.0.0
      • createRouteResultAsync

        public static ListenableFuture<RouteResult> createRouteResultAsync​(PortalItem portalItem)
        Imports a route result from a portal item.
        Parameters:
        portalItem - the portal item containing a feature collection that contains directions, stops, route info, and barriers tables.
        Returns:
        A listenable future that contains the route result
        Throws:
        IllegalArgumentException - if portalItem is null
        Since:
        100.3.0
      • createRouteResultAsync

        public static ListenableFuture<RouteResult> createRouteResultAsync​(FeatureCollection featureCollection)
        Imports a route result from a feature collection that represents a route layer.
        Parameters:
        featureCollection - the feature collection that contains directions, stops, route info, and barriers tables.
        Returns:
        a listenable future that contains a route result
        Throws:
        IllegalArgumentException - if featureCollection is null
        Since:
        100.4.0
      • getLoadError

        public ArcGISRuntimeException getLoadError()
        Description copied from interface: Loadable
        Returns the most recent error that was encountered when the loadable resource transitioned to the LoadStatus.FAILED_TO_LOAD state, either due to calling loadAsync or retryLoadAsync.

        If the resource subsequently transitions to LoadStatus.LOADED, for example if a call to retryLoadAsync completes successfully, the error is cleared out.

        Specified by:
        getLoadError in interface Loadable
        Returns:
        the most recent error that was encountered when the loadable resource transitioned to the LoadStatus.FAILED_TO_LOAD state.
      • getLoadStatus

        public LoadStatus getLoadStatus()
        Description copied from interface: Loadable
        Returns the LoadStatus of the loadable resource.
        Specified by:
        getLoadStatus in interface Loadable
        Returns:
        the LoadStatus of the loadable resource
      • loadAsync

        public void loadAsync()
        Description copied from interface: Loadable
        Loads the metadata of the loadable resource asynchronously.

        The load status changes from LoadStatus.NOT_LOADED to LoadStatus.LOADING. A listener can be added via Loadable.addDoneLoadingListener(java.lang.Runnable) that is invoked upon completion of the asynchronous load operation.

        If the load operation completes successfully, the load status will be LoadStatus.LOADED, which means the resource has loaded its metadata.

        If the load operation failed, the load status will be LoadStatus.FAILED_TO_LOAD and the error can be retrieved by calling Loadable.getLoadError().

        This method can be called concurrently and repeatedly, but only one attempt is ever made to perform the load operation. If a load operation is already in progress (LoadStatus.LOADING state) when loadAsync is called, it simply piggy-backs on the outstanding operation and the done loading listener added to the loadable resource is enqueued to be invoked when that operation completes. If the operation has already completed (LoadStatus.LOADED or LoadStatus.FAILED_TO_LOAD state) when loadAsync is called, the done loading listener is immediately invoked when added to the loadable resource.

        If a loadable resource has failed to load, calling loadAsync on it subsequently will not change its state. The done loading listener will be invoked immediately when added to the loadable resource. In order to retry loading the resource, Loadable.retryLoadAsync() needs to be used.

        A load operation that is in progress (LoadStatus.LOADING state) can be cancelled by calling Loadable.cancelLoad().

        Specified by:
        loadAsync in interface Loadable
      • retryLoadAsync

        public void retryLoadAsync()
        Description copied from interface: Loadable
        Tries to reload the metadata of the loadable resource asynchronously, but only if the resource failed to load previously (LoadStatus.FAILED_TO_LOAD state) or wasn't loaded to begin with ( LoadStatus.NOT_LOADED state).

        For more details on the load process see Loadable.loadAsync().

        Specified by:
        retryLoadAsync in interface Loadable
      • cancelLoad

        public void cancelLoad()
        Description copied from interface: Loadable
        Cancels a pending load operation.

        A load operation that is in progress (LoadStatus.LOADING state) can be cancelled by calling this method and the resource will transition from LoadStatus.LOADING to LoadStatus.FAILED_TO_LOAD state. If the load operation was successfully cancelled a CancellationException will be returned from Loadable.getLoadError().

        Cancellation should be used carefully because all enqueued done loading listeners for that resource instance will get invoked with an error stating that the operation was cancelled. Thus, one component in the application can cancel the load operation initiated by other components.

        This method does nothing if the resource is not in LoadStatus.LOADING state.

        Specified by:
        cancelLoad in interface Loadable
      • addDoneLoadingListener

        public void addDoneLoadingListener​(Runnable listener)
        Description copied from interface: Loadable
        Adds a listener to the loadable resource that is invoked when loading has completed.

        The listener may be added at any point, whether the loadable resource has already completed loading or not.

        • For resources that are not loaded when the listener is added (LoadStatus is NOT_LOADED or LOADING): When the resource completes loading, the listener will be invoked on the UI thread if it is added from the UI thread, otherwise it is not guaranteed on which thread the listener is invoked.
        • For resources that are already loaded when the listener is added (LoadStatus is LOADED or FAILED_TO_LOAD): The listener will be called immediately, on the current thread.

        Alternatively, to be notified when there is any change in the load status, use the Loadable.addLoadStatusChangedListener(LoadStatusChangedListener) method instead.

        Specified by:
        addDoneLoadingListener in interface Loadable
        Parameters:
        listener - a Runnable that is invoked upon completion of the load operation
      • removeDoneLoadingListener

        public boolean removeDoneLoadingListener​(Runnable listener)
        Description copied from interface: Loadable
        Removes a done loading listener from the loadable resource.
        Specified by:
        removeDoneLoadingListener in interface Loadable
        Parameters:
        listener - the listener to be removed
        Returns:
        true if the listener was removed, otherwise false
      • addLoadStatusChangedListener

        public void addLoadStatusChangedListener​(LoadStatusChangedListener listener)
        Description copied from interface: Loadable
        Adds a LoadStatusChangedListener to the loadable resource that is invoked whenever the load status changes.

        Adding this listener on the UI thread will cause it to be invoked on the UI thread, otherwise it is not guaranteed on which thread the listener is invoked.

        The listener will not be called if added to a loadable resource that has already completed loading. To be notified when a loadable resource has completed loading, including if the resource is already loaded when the listener is added, use the Loadable.addDoneLoadingListener(Runnable) method.

        Specified by:
        addLoadStatusChangedListener in interface Loadable
        Parameters:
        listener - the LoadStatusChangedListener to be added
      • removeLoadStatusChangedListener

        public boolean removeLoadStatusChangedListener​(LoadStatusChangedListener listener)
        Description copied from interface: Loadable
        Removes a LoadStatusChangedListener from the loadable resource.
        Specified by:
        removeLoadStatusChangedListener in interface Loadable
        Parameters:
        listener - the LoadStatusChangedListener to be removed
        Returns:
        true if the listener was removed, otherwise false
      • getCredential

        public Credential getCredential()
        Description copied from interface: RemoteResource
        Gets the Credential that is set on the network resource.
        Specified by:
        getCredential in interface RemoteResource
        Returns:
        the Credential, or null if there is none
      • setCredential

        public void setCredential​(Credential credential)
        Description copied from interface: RemoteResource
        Sets a Credential to be used by the network resource in the event of an authentication challenge. The default credential is null.
        Specified by:
        setCredential in interface RemoteResource
        Parameters:
        credential - the Credential to be used for authentication
      • getRequestConfiguration

        public RequestConfiguration getRequestConfiguration()
        Description copied from interface: RemoteResource
        Gets the RequestConfiguration used to modify the parameters of network requests made by this RemoteResource.
        Specified by:
        getRequestConfiguration in interface RemoteResource
        Returns:
        the RequestConfiguration used to modify network requests
      • getUri

        public String getUri()
        Description copied from interface: RemoteResource
        Gets the URI of this RemoteResource. Typically this is the URI used to instantiate the object.
        Specified by:
        getUri in interface RemoteResource
        Returns:
        the URI of this RemoteResource