Waypoint arrival screen | Navigation SDK v1 | iOS

A newer version of the Navigation SDK is available
This page uses v1.4.2 of the Mapbox Navigation SDK. A newer version of the SDK is available. Learn about the latest version, v2.18.1, in the Navigation SDK documentation.
Swift
ViewController
import Foundation
import UIKit
import MapboxCoreNavigation
import MapboxNavigation
import MapboxDirections

class WaypointArrivalScreenViewController: UIViewController {
    
    override func viewDidLoad() {
        super.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] (session, result) in
            switch result {
            case .failure(let error):
                print(error.localizedDescription)
            case .success(let response):
                guard let route = response.routes?.first, let strongSelf = self else {
                    return
                }
                
                // For demonstration purposes, simulate locations if the Simulate Navigation option is on.
                let navigationService = MapboxNavigationService(route: route, routeIndex: 0, routeOptions: routeOptions, simulating: simulationIsEnabled ? .always : .onPoorGPS)
                let navigationOptions = NavigationOptions(navigationService: navigationService)
                let navigationViewController = NavigationViewController(for: route, 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: { action in
            // Begin the next leg once the driver confirms
            if !isFinalLeg {
                navigationViewController.navigationService.routeProgress.legIndex += 1
                navigationViewController.navigationService.start()
            }
        }))
        navigationViewController.present(alert, animated: true, completion: nil)
        
        return false
    }
    
    func navigationViewControllerDidDismiss(_ navigationViewController: NavigationViewController, byCanceling canceled: Bool) {
        dismiss(animated: true, completion: nil)
    }
}