如何正确获取用户坐标？

Question

我MapViewController采用这种CLLocationManagerDelegate协议：

extension MapViewController:CLLocationManagerDelegate{

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

        let usrLocation:CLLocation = locations[0] as CLLocation

        // readable
        print("lat = \(usrLocation.coordinate.latitude)")
        print("lon = \(usrLocation.coordinate.longitude)")

        self.userLocation = usrLocation

        locationManager.stopUpdatingLocation()

    }

    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error)
    {
        print("Error \(error)")
    }

    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {

        switch status {
        case .restricted, .denied, .notDetermined:

            // no issue here because I make a very generic request to a server
            // AND I don't need user coordinates

            break

        case .authorizedWhenInUse, .authorizedAlways:

            // here I need user coordinates because I need to request content to a server
            // based on user coordinates but when I check for userLocation
            // at first I find <+0.00000000,+0.00000000> +/- 0.00m (speed -1.00 mps / course -1.00

            print("----------------")
            print(userLocation)
            print("----------------")

            break
        }
    }

我需要 .authorizedWhenInUse/.autorizeAlways 案例正文中的用户位置数据，因为我需要发送电流用户坐标到服务器。问题是当我需要它们时，我首先得到一个像这样的用户位置：

 <+0.00000000,+0.00000000> +/- 0.00m (speed -1.00 mps / course -1.00>

userLocation 是 viewcontroller class 的成员，其值设置在 locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) 中。我应该将请求移至此功能吗？以及如何检查该上下文中的用户状态？我只想请求授权该应用程序的用户检索他们的位置。我希望解决方案不是计时器和多次检查，但任何帮助表示赞赏:-)

Answer 1

仅仅因为您收到了 .authorizedWhenInUse 或 .authorizedAlways 并不意味着您已经开始定位服务。这只是意味着它已被授权。您不应该尝试检索 didChangeAuthorization 中的用户位置。

因此，您应该调用 startUpdatingLocation and move your code that sends this location to the server to your didUpdateLocations 方法。

如何正确获取用户坐标？

How to properly get user coordinates?

gps

geolocation

core-location

cllocation

swift