Waypoint arrival screen

Display a message when a user arrives at a waypoint.

This code example is part of the Mapbox Navigation SDK for iOS demo app,
which you can build and run: https://github.com/mapbox/mapbox-navigation-ios-examples
To learn more about each example in this app, including descriptions and links
to documentation, see our docs: https://docs.mapbox.com/ios/navigation/examples/waypoint-arrival-screen
import Foundation
import UIKit
import MapboxCoreNavigation
import MapboxNavigation
import MapboxDirections
import MapboxMaps
class WaypointArrivalScreenViewController: UIViewController {
override func viewDidLoad() {
let waypointOne = Waypoint(coordinate: CLLocationCoordinate2DMake(37.777655950348475, -122.43199467658997))
let waypointTwo = Waypoint(coordinate: CLLocationCoordinate2DMake(37.776087132342745, -122.4329173564911))
let waypointThree = Waypoint(coordinate: CLLocationCoordinate2DMake(37.775357832637184, -122.43493974208832))
let routeOptions = NavigationRouteOptions(waypoints: [waypointOne, waypointTwo, waypointThree])
Directions.shared.calculate(routeOptions) { [weak self] (_, result) in
switch result {
case .failure(let error):
case .success(let response):
guard let strongSelf = self else {
// For demonstration purposes, simulate locations if the Simulate Navigation option is on.
let navigationService = MapboxNavigationService(routeResponse: response, routeIndex: 0, routeOptions: routeOptions, simulating: simulationIsEnabled ? .always : .onPoorGPS)
let navigationOptions = NavigationOptions(navigationService: navigationService)
let navigationViewController = NavigationViewController(for: response, routeIndex: 0, routeOptions: routeOptions, navigationOptions: navigationOptions)
navigationViewController.modalPresentationStyle = .fullScreen
navigationViewController.delegate = strongSelf
strongSelf.present(navigationViewController, animated: true, completion: nil)
extension WaypointArrivalScreenViewController: NavigationViewControllerDelegate {
// Show an alert when arriving at the waypoint and wait until the user to start next leg.
func navigationViewController(_ navigationViewController: NavigationViewController, didArriveAt waypoint: Waypoint) -> Bool {
let isFinalLeg = navigationViewController.navigationService.routeProgress.isFinalLeg
if isFinalLeg {
return true
let alert = UIAlertController(title: "Arrived at \(waypoint.name ?? "Unknown").", message: "Would you like to continue?", preferredStyle: .alert)
alert.addAction(UIAlertAction(title: "Ok", style: .default, handler: { _ in
// Begin the next leg once the driver confirms
if !isFinalLeg {
navigationViewController.navigationService.router.advanceLegIndex(completionHandler: nil)
navigationViewController.present(alert, animated: true, completion: nil)
return false
func navigationViewControllerDidDismiss(_ navigationViewController: NavigationViewController, byCanceling canceled: Bool) {
dismiss(animated: true, completion: nil)