Route
A location data source that uses a route tracker and a generic location data source to output locations snapped to a route. Setting the RouteTrackerLocationDataSource is optional when desiring to have the location display symbol navigate along a route. Using this object provides the benefit of having the current location snapped to the route polyline during navigation. If the RouteTrackerLocationDataSource is not used, you may notice that the actual GPS location tends to wander off the route polyline due to the accuracy provided by the GPS unit.
No distance tolerance needs to be specified to enable the snapping effect of having the location display symbol follow along the route polyline. An internal algorithm is used by the RouteTrackerLocationDataSource to determine if location is 'on route' or 'off route'. If the location is seen as 'on route' then snapping will occur, otherwise the output location will be the original input GPS location. If it is determined that the tracking along the route is no longer needed the RouteTrackerLocationDataSource's stop method can be called or the com.arcgismaps.mapping.view.LocationDisplay can be reset to a different data source.
To provide some insight on how the RouteTrackerLocationDataSource works, the data source will pass the locations from the LocationDataSource.locationChanged event to the com.arcgismaps.navigation.RouteTracker.trackLocation. The com.arcgismaps.navigation.TrackingStatus.displayLocation will then be returned in this data source's locationChanged event.
To control the orientation of the location display symbol as it navigates along a route refer to the com.arcgismaps.mapping.view.MapView.locationDisplay class.
Since
200.1.0
Constructors
Creates a RouteTrackerLocationDataSource object.
Inherited properties
An error that describes a problem encountered while starting or running the LocationDataSource. This property is used to notify the user about errors that occur in LocationDataSource. Such errors are critical for LocationDataSource and will cause it stop. If LocationDataSource cannot be started, or it stopped after a successful start, this property will store information related to what caused LocationDataSource to stop.
A SharedFlow that emits heading changes.
A SharedFlow that emits location changes.
The current status of the location data source. The status indicates if the location data source is starting, started, stopping, stopped, and has failed to start.