Swift：如何保存经纬度以在另一个Swift文件中使用

Question

我在ViewController中有以下代码可以捕获用户的当前位置：

@IBOutlet weak var userMapView: MKMapView!

var locationManager = CLLocationManager()

override func viewDidLoad() {
    super.viewDidLoad()

    locationManager = CLLocationManager()
    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyBest
    locationManager.requestWhenInUseAuthorization()
    locationManager.startUpdatingLocation()

}

func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

    let location : CLLocationCoordinate2D = manager.location!.coordinate

    print(location.latitude)

    let latitudeDelta : CLLocationDegrees = 0.01
    let longitudeDelta : CLLocationDegrees = 0.01

    let span : MKCoordinateSpan = MKCoordinateSpanMake(latitudeDelta, longitudeDelta)

    let center : CLLocationCoordinate2D = CLLocationCoordinate2DMake(location.latitude, location.longitude)

    let region : MKCoordinateRegion = MKCoordinateRegionMake(center, span)

    self.userMapView.setRegion(region, animated: false)

    self.userMapView.removeAnnotations(userMapView.annotations)

    let userPinLocation : CLLocationCoordinate2D = CLLocationCoordinate2DMake(location.latitude, location.longitude)

    let pinAnnotation = MKPointAnnotation()

    pinAnnotation.coordinate = userPinLocation

    pinAnnotation.title = "Sua localização atual"

    self.userMapView.addAnnotation(pinAnnotation)

}

我还有另一个具有数据库功能的快捷文件，我需要保存纬度和经度以在数据库中使用

如何将经度和纬度存储在变量中以便在locationManager函数外部使用？

Answer 1

在locationManager（_：didUpdateLocations :)实例方法中执行数据库操作。 或var全局模型。

Answer 2

CLLocationCoordinate2D只是一个包含2个Double的Struct 。

didUpdateLocations函数的第一行将当前位置提取到局部变量location ：

let location : CLLocationCoordinate2D = manager.location!.coordinate

您可以将其从局部变量更改为实例变量，并且在该函数外部将可见。 我将其设为可选，因此如果从未分配值，则它将为nil。