Basic navigation app

Add basic navigation functionality to an iOS application using the Navigation SDK for iOS.

This code example is part of the Mapbox Navigation SDK for iOS demo app,
which you can build and run:
To learn more about each example in this app, including descriptions and links
to documentation, see our docs:
import Foundation
import UIKit
import MapboxCoreNavigation
import MapboxNavigation
import MapboxDirections
class BasicViewController: UIViewController {
override func viewDidLoad() {
let origin = CLLocationCoordinate2DMake(37.77440680146262, -122.43539772352648)
let destination = CLLocationCoordinate2DMake(37.76556957793795, -122.42409811526268)
let options = NavigationRouteOptions(coordinates: [origin, destination])
Directions.shared.calculate(options) { [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.
// Since first route is retrieved from response `routeIndex` is set to 0.
let navigationService = MapboxNavigationService(routeResponse: response, routeIndex: 0, routeOptions: options, simulating: simulationIsEnabled ? .always : .onPoorGPS)
let navigationOptions = NavigationOptions(navigationService: navigationService)
let navigationViewController = NavigationViewController(for: response, routeIndex: 0, routeOptions: options, navigationOptions: navigationOptions)
navigationViewController.modalPresentationStyle = .fullScreen
// Render part of the route that has been traversed with full transparency, to give the illusion of a disappearing route.
navigationViewController.routeLineTracksTraversal = true
strongSelf.present(navigationViewController, animated: true, completion: nil)