mapbox - NavigationViewController 的问题 - SwiftUI

Question

我成功地生成了一个通用的 MGLMapView 和带有生成路线的折线叠加层，但是在为我的 Turn-by-Turn Directions 功能构建 NavigationViewController 时遇到了障碍。我编译并运行以下代码：

struct MapboxNavigationView: UIViewControllerRepresentable {

    func makeUIViewController(context: Context) -> NavigationViewController {
        var viewController: NavigationViewController

        let directions = Directions(credentials: DirectionsCredentials(accessToken: "***PrivateKey***", host: nil))
        
        let waypoints2 = [
            Waypoint(coordinate: CLLocationCoordinate2D(latitude: 32.623251, longitude: -117.134877), coordinateAccuracy: 1, name: "Origin"),
            Waypoint(coordinate: CLLocationCoordinate2D(latitude: 32.672401, longitude: -117.166996), coordinateAccuracy: 1, name: "Destination"),
        ]
        
        var route = Route?

        let options = RouteOptions(waypoints: waypoints2, profileIdentifier: .automobile)
        options.includesSteps = true
        
        directions.calculate(options) { (session, result) in
            switch result {
            case .failure(let error):
                print("error = \(error.localizedDescription)")
            case .success(let response):
                route = response.routes?.first
            }
        }
        viewController = NavigationViewController(for: route, routeOptions: options)
        viewController.modalPresentationStyle = .fullScreen
        return viewController
        
    }

    func updateUIViewController(_ uiViewController: NavigationViewController, context: Context) {

    }
}

我在 RouteProgress.swift (MapboxCoreNavigation CocoaPods) 的第 183 行（下方）收到一条错误消息，“线程 1：EXC_BAD_ACCESS（代码=1，地址=0x77797ced916870）”：

self.currentLegProgress = RouteLegProgress(leg: route.legs[legIndex], stepIndex: 0, spokenInstructionIndex: spokenInstructionIndex)

我怀疑 NavigationController 需要访问用户在路线中所在的当前支路。任何帮助将不胜感激！

标签： mapboxmapbox-iosmapbox-ios-maps