当我在房间里移动时，如何在Google Map上获取iPhone的当前位置？

Question

我是Google Map SDK的新手，我实现了CLLocationManagerDeletage的可选功能：

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
{
    guard let location = locations.first else {
        return
    }

   print(location) //this code is what I want.

    viewMap.camera = GMSCameraPosition(target: location.coordinate, zoom: 15, bearing: 0, viewingAngle: 0)


    locationManager.stopUpdatingLocation()

}

但是它不会打印位置。