ios - mapKit Swift でユーザーとの距離を表示 (miles/km)

Question

tableView に距離を表示しようとしましたが、表示できません。この質問は、この質問のフォローアップです: CLLocationDistance conversion。距離を確認しました。Location私のクラスでこの関数を使用する：

// Get distance
func distance(to location: CLLocation) -> CLLocationDistance {
    return location.distance(from: self.location)
}

ユーザーの現在の場所を取得する方法:

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    let location = locations[0]

    let span:MKCoordinateSpan = MKCoordinateSpanMake(0.01, 0.01)
    let myLocation:CLLocationCoordinate2D = CLLocationCoordinate2DMake(location.coordinate.latitude, location.coordinate.longitude)
    let region:MKCoordinateRegion = MKCoordinateRegionMake(myLocation, span)
    mapView.setRegion(region, animated: true)

    // Add a lastUserLocation to LocationManager and update it every time that the delegate receives a new location
    LocationManager.shared.lastUserLocation = locations.last
    LocationManager.shared.sortLocationsInPlace()

    self.mapView.showsUserLocation = true

}

LocationManager のソート機能:

func getSortedLocations(userLocation: CLLocation) -> [Location] {
        return locations.sorted { (l1, l2) -> Bool in
            return l1.distance(to: userLocation) < l2.distance(to: userLocation)
        }
    }

func sortLocationsInPlace() {
    if let validLocation = lastUserLocation {
        locations.sort { (l1, l2) -> Bool in
            return l1.distance(to: validLocation) < l2.distance(to: validLocation)
        } 
    }
}

cellForRowAt:

var sortedLocations = [Location]()

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "locationCell", for: indexPath)


    let location = sortedLocations[indexPath.row]

    cell.textLabel?.text = location.name
    return cell
}

アップデート

Locationクラス内：

class Location {

    var name: String
    var latitude: Double
    var longitude: Double
    var location:CLLocation {
        return CLLocation(latitude: latitude, longitude: longitude)
    }

    init?(json: JSON) {

        guard let name = json["name"] as? String, let latitude = json["latitude"] as? Double, let longitude = json["longitude"] as? Double else { return nil }
        self.name = name
        self.latitude = latitude
        self.longitude = longitude
    }

    func distance(to location: CLLocation) -> CLLocationDistance {
        return location.distance(from: self.location)
    }
}