在IOS中使用Google Maps如何从当前位置开始绘制路径？

Question

从当前位置移动时，我试图绘制路线。我在动态绘制路线时面临一个大问题，请帮助我解决它。我需要Swift IOS中的解决方案 我还需要一种方法来保存“跟踪的路径”，然后以哪种格式将其发送到服务器？

@objc func startRecording（）{         self.mapView.clear（）

    // Initialize the locations list
    self.locations = [CLLocation]()

    // Set Tracking
    self.locationManager.delegate = self
    self.locationManager.requestAlwaysAuthorization()
    self.mapView.isMyLocationEnabled = true

    locationManager.distanceFilter = 100
    locationManager.requestWhenInUseAuthorization()
    mapView.settings.compassButton = true
    locationManager.startUpdatingLocation()
    mapView.settings.myLocationButton = true

    // Start location manager
    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
    self.locationManager.startUpdatingLocation()
    // Initialize path
    self.path = GMSMutablePath()
    mapView.layer.borderWidth = 2
    mapView.layer.borderColor = UIColor(red: 165/255, green: 10/255, blue: 42/255, alpha: 1.0).cgColor
}

// MARK: - Polyline and Screen Position Updaters
func updateOverlay(currentPosition: CLLocation) {
    self.path.add(currentPosition.coordinate)
    self.polyline.path = self.path
}

func updateMapFrame(newLocation: CLLocation, zoom: Float) {
    let camera = GMSCameraPosition.camera(withTarget: newLocation.coordinate, zoom: zoom)
    self.mapView.animate(to: camera)
}

func initializePolylineAnnotation() {
    self.polyline.strokeColor = UIColor.blue
    self.polyline.strokeWidth = 5.0
    self.polyline.map = self.mapView
}

// MARK: - Map View Editor

func updateCurrentPositionMarker(currentLocation: CLLocation) {
    self.currentPositionMarker.map = nil
    self.currentPositionMarker = GMSMarker(position: currentLocation.coordinate)
    self.currentPositionMarker.icon = GMSMarker.markerImage(with: UIColor.cyan)
    self.currentPositionMarker.map = self.mapView
}