Core Navigation Logic

A RouteController tracks the user’s progress along a route, posting notifications as the user reaches significant points along the route. On every location update, the route controller evaluates the user’s location, determining whether the user remains on the route. If not, the route controller calculates a new route.

RouteController is responsible for the core navigation logic whereas NavigationViewController is responsible for displaying a default drop-in navigation UI.

The RouteControllerDelegate class provides methods for responding to significant occasions during the user’s traversal of a route monitored by a RouteController.

RouteProgress stores the user’s progress along a route.

RouteLegProgress stores the user’s progress along a route leg.

RouteStepProgress stores the user’s progress along a route step.