Question

此代码功能较早，现在它一直在崩溃，因为该位置将返回为零。我不确定此错误的来源或解决方法。据我所知，我的代码是正确的。有什么帮助吗？

import UIKit
import CoreLocation
import MapKit

class LocationController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {

    var locationManager = CLLocationManager()

    @IBOutlet var Map: MKMapView!

    var manager:CLLocationManager!
    var myLocations: [CLLocation] = []

        override func viewDidLoad()
        {
            super.viewDidLoad()

            self.Map.mapType = MKMapType.Standard
            self.Map.showsUserLocation = true

            //self.Map.removeAnnotations(self.theMap.annotations)

            locationManager.delegate = self
            locationManager.desiredAccuracy = kCLLocationAccuracyBest
            locationManager.requestAlwaysAuthorization()
            locationManager.startUpdatingLocation()


            let location = self.locationManager.location

            var latitude: Double = location.coordinate.latitude
            var longitude: Double = location.coordinate.longitude

            println("current latitude :: \(latitude)")
            println("current longitude :: \(longitude)")
        }

Answer 1

location的{{1}}属性声明为：

CLLocationManager

因此您的@NSCopying var location: CLLocation! { get }可以填充let location值。也许这个声明最近发生了变化，因为Apple磨损了与选项相关的界面。

您需要在尊重可能nil的同时绑定latitude和longitude。

斯威夫特的位置回来零

1 个答案: