iOS：如何在 Google 地图上启用音频导航

Swift
import GoogleMaps
class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        // 初始化 Google 地图视图
        let camera = GMSCameraPosition.camera(withLatitude: 37.7749, longitude: -122.4194, zoom: 12.0)
        let mapView = GMSMapView.map(withFrame: CGRect.zero, camera: camera)
        view = mapView
        
        // 创建一个导航请求
        let navigationRequest = GMSNavigationRequest(destination: CLLocationCoordinate2D(latitude: 37.7749, longitude: -122.4194))
        
        // 启动音频导航
        GMSMapsService.shared().startNavigation(navigationRequest) { (result, error) in
            if let error = error {
                print("音频导航启动失败：\(error.localizedDescription)")
            } else {
                print("音频导航启动成功")
            }
        }
    }
}