Map-matched location provider

Map-matched locations

Locations provided by a location service have an element of inaccuracy. Using the raw location to update the current user’s position can lead to a position indicator that is unaligned with the Route. To solve this inaccuracy problem, TomTomNavigation produces map-matched locations based on raw locations from the provided LocationProvider. Matched locations are observed through the LocationMapMatchedListener.

1val locationMapMatchedListener =
2    LocationMapMatchedListener { mapMatchingResult: MapMatchingResult ->
3        // Your code goes here
4    }
5tomTomNavigation.addLocationMapMatchedListener(locationMapMatchedListener)

To remove a previously-added listener, call TomTomNavigation.removeLocationMapMatchedListener(LocationMapMatchedListener).

tomTomNavigation.removeLocationMapMatchedListener(locationMapMatchedListener)

To make it easier to provide a map-matched location into the TomTomMap, the Navigation module provides the map-matched LocationProvider. It is a special implementation of a LocationProvider that accepts TomTomNavigation.

Before using the map-matched LocationProvider, add the module dependency in the build.gradle.kts of your application module and synchronize the project:

implementation("com.tomtom.sdk.location:provider-map-matched:1.21.0")

Then you can create map-matched LocationProvider and use it in the TomTomMap.

val mapMatchedLocationProvider = MapMatchedLocationProviderFactory.create(navigation = tomTomNavigation)
tomTomMap.setLocationProvider(mapMatchedLocationProvider)

If SimulationLocationProvider is used in TomTomNavigation, make sure that it is used in TomTomMap instead of map-matched LocationProvider.

Next steps

Since you have learned about location tracking, here are recommendations for the next steps:

• Location module quickstart
• Showing the user location on the map