Custom server | 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A newer version of the Navigation SDK is available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 A newer version of the SDK is available.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 CustomServerViewController: UIViewController {
    
    let routeOptions = NavigationRouteOptions(coordinates: [
        CLLocationCoordinate2DMake(37.77440680146262, -122.43539772352648),
        CLLocationCoordinate2DMake(37.76556957793795, -122.42409811526268)
    ])

    var navigationViewController: NavigationViewController?
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let routeOptions = self.routeOptions
        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)
                strongSelf.navigationViewController = NavigationViewController(for: route, routeIndex: 0, routeOptions: routeOptions, navigationOptions: navigationOptions)
                strongSelf.navigationViewController?.modalPresentationStyle = .fullScreen
                strongSelf.navigationViewController?.delegate = strongSelf
                
                strongSelf.present(strongSelf.navigationViewController!, animated: true, completion: nil)
            }
        }
    }
}

extension CustomServerViewController: NavigationViewControllerDelegate {
    // Never reroute internally. Instead,
    // 1. Fetch a route from your server
    // 2. Map Match the coordinates from your server
    // 3. Set the route on your server
    func navigationViewController(_ navigationViewController: NavigationViewController, shouldRerouteFrom location: CLLocation) -> Bool {
        
        // Here, we are simulating a custom server.
        let routeOptions = NavigationRouteOptions(waypoints: [Waypoint(location: location), self.routeOptions.waypoints.last!])
        Directions.shared.calculate(routeOptions) { [weak self] (session, result) in
            switch result {
            case .failure(let error):
                print(error.localizedDescription)
            case .success(let response):
                guard let routeShape = response.routes?.first?.shape else {
                    return
                }
                
                //
                // ❗️IMPORTANT❗️
                // Use `Directions.calculateRoutes(matching:completionHandler:)` for navigating on a map matching response.
                //
                let matchOptions = NavigationMatchOptions(coordinates: routeShape.coordinates)
                
                // By default, each waypoint separates two legs, so the user stops at each waypoint.
                // We want the user to navigate from the first coordinate to the last coordinate without any stops in between.
                // You can specify more intermediate waypoints here if you’d like.
                for waypoint in matchOptions.waypoints.dropFirst().dropLast() {
                    waypoint.separatesLegs = false
                }
                
                Directions.shared.calculateRoutes(matching: matchOptions) { [weak self] (session, result) in
                    switch result {
                    case .failure(let error):
                        print(error.localizedDescription)
                    case .success(let response):
                        guard let route = response.routes?.first else {
                            return
                        }
                        
                        // Set the route
                        self?.navigationViewController?.navigationService.indexedRoute = (route, 0)
                    }
                }
            }
        }
        
        return true
    }
    
    func navigationViewControllerDidDismiss(_ navigationViewController: NavigationViewController, byCanceling canceled: Bool) {
        dismiss(animated: true, completion: nil)
    }
}