Question

很抱歉没有提供代码。之所以在图片上发布图片，是因为xcode是 LLVM（低级虚拟机）编译器，主要具有 UI环境，尤其是对于配置部分。例如，通过将对象拖动到视图控制器来创建对象的出口或动作，而不是直接通过代码定义对象。因此，既然如此，我认为人们会轻易地更快地注意到我的错误。

import Cocoa
import MapKit

class ViewController: NSViewController, CLLocationManagerDelegate {

   @IBOutlet var mapView: MKMapView!
   var locManager = CLLocationManager()
   var currentLocation = CLLocation()

   var locationManager = CLLocationManager()
   var didFindMyLocation = false
   var strForCurLatitude = "";
   var strForCurLongitude = "";

   override func viewDidLoad() {
       super.viewDidLoad()

       let distancespan:CLLocationDegrees = 2000
       let busCScampuslocation:CLLocationCoordinate2D =  CLLocationCoordinate2DMake(currentLocation.coordinate.latitude, currentLocation.coordinate.longitude)
       mapView.setRegion(MKCoordinateRegion.init(center: bsuCScampuslocation, latitudinalMeters: distancespan, longitudinalMeters: distancespan), animated: true)
       print(currentLocation.coordinate.latitude)
   }
   ...
}

Answer 1

我展示了一个ios演示，希望能为您提供帮助。 首先使用委托并定义CLLocationManager

CLLocationManagerDelegate
var locManager:CLLocationManager?;

然后这样做：

    self.locManager = CLLocationManager();//[[CLLocationManager alloc] init];
    self.locManager!.delegate = self;
    self.locManager!.desiredAccuracy = kCLLocationAccuracyBest;
    self.locManager!.distanceFilter = 5.0;
    //ios8 later have effect
    self.locManager?.requestWhenInUseAuthorization();// front use
    self.locManager?.startUpdatingLocation();

最后，可以获得数据：

func locationManager(manager: CLLocationManager!, didUpdateToLocation newLocation: CLLocation!, fromLocation oldLocation: CLLocation!) {
    println("latitude %g",newLocation.coordinate.latitude);
    println("longitude %g",newLocation.coordinate.longitude);
}

func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!) {

    println("locationManager error");

}

最后但并非最不重要的一点，在info.plist中应添加以下内容：

NSLocationWhenInUseUsageDescription，set YES

希望能为您提供帮助。

Answer 2

迅速5：

ViewController.swift

import Cocoa
import CoreLocation
import MapKit

class ViewController: NSViewController, CLLocationManagerDelegate {

       let manager = CLLocationManager()

       override func viewDidLoad() {
           super.viewDidLoad()
           manager.delegate = self
           manager.startUpdatingLocation()
       }

       func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
            print(locations)
            //This is where you can update the MapView when the computer is moved (locations.last!.coordinate)
       }

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

       func locationManager(_ manager: CLLocationManager,
                     didChangeAuthorization status: CLAuthorizationStatus) {
           print("location manager auth status changed to: " )
           switch status {
               case .restricted:
                    print("restricted")
               case .denied:
                    print("denied")
               case .authorized:
                    print("authorized")
               case .notDetermined:
                    print("not yet determined")
               default:
                    print("Unknown")
       }

}

将这些行添加到Info.plist或将NSLocationAlwaysAndWhenInUseUsageDescription和/（或？）NSLocationUsageDescription设置为纯文本形式，以说明需要访问用户位置的原因

    <key>NSLocationAlwaysAndWhenInUseUsageDescription</key>
        <string>Allows us to locate you</string>
    <key>NSLocationUsageDescription</key>
        <string>Allows us to locate you</string>

如果用户关闭了位置服务，则授权状态将为“拒绝”

使用XCode Swift 3从osx / cocoa应用程序获取当前位置

2 个答案: