小编Rya*_*ott的帖子

我的代码工作正常,我想要它在模拟器中的确切方式.但是,当我把它放在真实设备上并转到该位置时,locationManager(..., didEnterRegion region: CLRegion)不会被调用.我不认为它是在代码中的错误,因为当我进入和离开的模拟器两个位置didExitRegion和didEnterRegion被调用,而不是真正的设备上.我正在使用Swift 2.0 Xcode 7 beta 5中的iPhone 5S进行测试,在大型开放区域内具有良好的小区覆盖.我也尝试过不同的半径.我的简化代码如下:

import UIKit
import CoreLocation
import MapKit

class GeoLapViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate{

    var manager: CLLocationManager?
    var location: CLLocationCoordinate2D!

    @IBOutlet weak var mapView: MKMapView!

    override func viewDidLoad() {
        super.viewDidLoad()

        manager = CLLocationManager()
        manager?.delegate = self;
        manager?.desiredAccuracy = kCLLocationAccuracyBest

        self.mapView.delegate = self
        mapView.mapType = MKMapType.Satellite

        manager?.startUpdatingLocation()
        let currRegion = CLCircularRegion(center: CLLocationCoordinate2D(latitude: location.latitude, longitude: location.longitude), radius: 20, identifier: "Laplocation")
        manager?.startMonitoringForRegion(currRegion)

        let newAnotation = MKPointAnnotation() …

这是我的VC代码:

import UIKit
import MapKit
import CoreLocation

class ViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate {
    @IBOutlet weak var mapView: MKMapView!
    let locationManager = CLLocationManager()

    override func viewDidLoad() {
        super.viewDidLoad()

        locationManager.delegate = self
        locationManager.requestWhenInUseAuthorization()
        mapView.showsUserLocation = true
    }

    func locationManager(manager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
        mapView.showsUserLocation = (status == .AuthorizedAlways)
    }

    func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        let locValue:CLLocationCoordinate2D = manager.location!.coordinate
        print("locations = \(locValue.latitude) \(locValue.longitude)")
    }
}

我还在plist文件中添加了NSLocationWhenInUseUsageDescription.我有CoreLocation和MapKit框架,任何想法为什么这不起作用？它不会在地图上显示用户位置,也不会打印出用户的坐标.在堆栈溢出时没有在网上找到任何东西.

我有一个名为struct的结构Jar,我想将它们的数组保存到NSUserDefaults.这是jar结构代码:

struct Jar {

    let name: String
    let amount: Int

    init(name: String, amount: Int){
        self.name = name
        self.amount = amount
    }
}

我相信我需要将它转换为NSObject才能保存它.(因为您无法将结构直接保存到NSUserDefaults).我的问题是: 如何将结构数组转换为NSObject？以及如何将NSObject转换回结构数组.