The preferred language to be used within TomTomNavigation in guidance instructions and announcement language.

Change of the preferred language requires navigation to update the current route. Once the route is updated, navigation switches the current language to one requested through the preferred language property. Supported languages can be acquired from GuidanceEngine.availableLanguages. If the specified language is not supported, navigation will default to using Locale.US.

Language changes can be observed via:


if the instance of TomTomNavigation has been closed before.