I have this error: Ambiguous use of 'locationManager'

Question

我正在尝试在 Swift 4 中创建一个地理围栏，但我遇到了一个问题，我在调用 locationManager 时出错，我不明白为什么会出现此错误

这是错误：

Ambiguous use of locationManager

我试图通过放置 self.locationManager.startUpdatingLocation () 和其他不同的方法来更正它，但是 none 有效

在这里我声明我的变量 locationManager:

var locationManager = CLLocationManager()

    if let appDelegate = UIApplication.shared.delegate as? AppDelegate{
      locationManager = appDelegate.locationManager
      locationManager.delegate = self
    }

这是我出错的代码块：

if let locationManager = self.locationManager{
        let region = self.regionToMonitor()
        if(locationManager.monitoredRegions.count > 0){
            self.geofencesLabel.text = "Geofences OFF"
            locationManager.stopMonitoring(for: region)
            mapView.removeOverlays(mapView.overlays)
        }else{
            self.geofencesLabel.text = "Geofences ON"
            locationManager.startMonitoring(for: region)
            mapView.add(MKCircle(center: region.center, radius: region.radius))

            nombreU.isHidden = true
            empresaU.isHidden = true
            correoElectronicoU.isHidden = true
            telefonoU.isHidden = true

            //Generamos el registro en la base de datos local en el servidor
            let nombreEvento = self.nombreE
            let nombreOficial = self.nombreO
            let fechaEvento = self.fechaE
            let fechaFormato = self.fechaF
            let lugarEvento = self.lugarE
            let descripcionEvento = self.descripcionE
            let imagenEvento = self.imagenE
            let latitudEvento = self.latitudE
            let longitudEvento = self.longitudE
            let empresaEvento = self.empresaE
            let rolEvento = self.rolE

            //Recuperamos el contenido de las cajas de texto para validarlo
            let nombreC = self.nombreU.text!
            let empresaC = self.empresaU.text!
            let correoC = self.correoElectronicoU.text!
            let telefonoC = self.telefonoU.text!

            //Validamos que no este vacio ninguna de los datos recibidos del servidor y ninguna de las cajas de texto

            if(nombreC.isEmpty || empresaC.isEmpty || correoC.isEmpty || telefonoC.isEmpty){
                displayMyAlertMessage(userMessage: "Todos los campos deben ser llenados")
                return
            }

            if(nombreEvento.isEmpty || nombreOficial.isEmpty || fechaEvento.isEmpty || fechaFormato.isEmpty || lugarEvento.isEmpty || descripcionEvento.isEmpty){
                displayMyAlertMessage(userMessage: "Ocurrio un error al cargar los eventos")
                dismiss(animated: true, completion: nil)
                return
            }

            //Ingresamos los valores a la base de datos local
            let newEvento = NSEntityDescription.insertNewObject(forEntityName: "Eventos", into: context)
            newEvento.setValue(nombreEvento, forKey: "nombreE")
            newEvento.setValue(nombreOficial, forKey: "nombreO")
            newEvento.setValue(fechaEvento, forKey: "fechaE")
            newEvento.setValue(fechaFormato, forKey: "fechaF")
            newEvento.setValue(lugarEvento, forKey: "lugarE")
            newEvento.setValue(descripcionEvento, forKey: "descripcionE")
            newEvento.setValue(imagenEvento, forKey: "imagenE")
            newEvento.setValue(latitudEvento, forKey: "latitudE")
            newEvento.setValue(longitudEvento, forKey: "longitudE")
            newEvento.setValue(empresaEvento, forKey: "empresaE")
            newEvento.setValue(rolEvento, forKey: "rolE")

            nombreU.isHidden = true
            empresaU.isHidden = true
            correoElectronicoU.isHidden = true
            telefonoU.isHidden = true

            //Mostramos mensaje de que ya estas registrado
            mensajeRegistro.text = "Gracias por registrarte a nuestro evento"
            mensajeRegistro.isHidden = false


            do{
                try context.save()
                print("El registro al evento se realizo de forma correcta")
            }catch{
                print(error)
            }

            //Ejecutamos el codigo del WebService
            guard let url = URL(string: "http://www.sitioweb.mx/webservice/registro.php?nombre=\(nom)&empresa=\(empresaC)&correo=\(corC)&telefono=\(telC)") else { return }

            let session = URLSession.shared
            session.dataTask(with: url) { (data, response, error) in
                if let response = response {
                    print(response)
                }else{
                    print(error!)
                }
            }
        }

    }else{
        notify(msg: "El geofence no esta disponible")
    }

我的 class 有这个扩展名：

// MARK: - Location Manager Delegate
extension RegistroViewController: CLLocationManagerDelegate {

    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
        mapView.showsUserLocation = status == .authorizedAlways
    }

    func locationManager(_ manager: CLLocationManager, monitoringDidFailFor region: CLRegion?, withError error: Error) {
        print("Monitoring failed for region with identifier: \(region!.identifier)")
    }

    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        print("Location Manager failed with the following error: \(error)")
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        print("Location update")
    }

}

我不明白调用时有什么问题或应该参考什么方法self.locationManager

这是我的 Appdelegate：

import UIKit
import CoreData
import CoreLocation
import UserNotifications

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?
    static var menu_bool = true
    static var menu_boolS = true

    let locationManager = CLLocationManager()


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        locationManager.delegate = self as? CLLocationManagerDelegate
        locationManager.requestAlwaysAuthorization()
        let options: UNAuthorizationOptions = [.badge, .sound, .alert]
        UNUserNotificationCenter.current().requestAuthorization(options: options){ success, error in
            if let error = error{
                print("Error: \(error)")
            }
        }
        return true
    }

Answer 1

如果locationManager是实例属性直接使用

let locationManager = CLLocationManager()

    let region = self.regionToMonitor()
    if(locationManager.monitoredRegions.count > 0){
        self.geofencesLabel.text = "Geofences OFF"
        locationManager.stopMonitoring(for: region)
        mapView.removeOverlays(mapView.overlays)
    }else{
        self.geofencesLabel.text = "Geofences ON"
        locationManager.startMonitoring(for: region)
        mapView.add(MKCircle(center: region.center, radius: region.radius))

没有

if let locationManager = self.locationManager{

I have this error: Ambiguous use of 'locationManager'

I have this error: Ambiguous use of 'locationManager'

xcode

core-location

ios

appdelegate

swift