Transmettre les coordonnées de latitude et de longitude dans un second contrôleur de vue

Question

Je souhaite enregistrer les coordonnées de latitude et de longitude dans deux étiquettes sur un deuxième contrôleur de vue, mais j'ai du mal à le faire fonctionner.

Voici mon code:

First View Controller:

import UIKit 
import CoreLocation 
import MapKit 

class ViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate { 

    @IBOutlet var map: MKMapView! 

    var locationManager = CLLocationManager() 

    override func viewDidLoad() { 
     super.viewDidLoad() 
     // Do any additional setup after loading the view, typically from a nib. 

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

    } 

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 

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

     let userLocation: CLLocation = locations[0] 

     let latitude = userLocation.coordinate.latitude 

     let longitude = userLocation.coordinate.longitude 

     let latDelta: CLLocationDegrees = 0.05 

     let lonDelta: CLLocationDegrees = 0.05 

     let span = MKCoordinateSpan(latitudeDelta: latDelta, longitudeDelta: lonDelta) 

     let location = CLLocationCoordinate2D(latitude: latitude, longitude: longitude) 

     let region = MKCoordinateRegion(center: location, span: span) 

     self.map.setRegion(region, animated: true) 

    }  

} 

Second View Controller:

import UIKit 

class AddSightingViewController: UIViewController { 

    var getCoordinates: ViewController! 

    @IBOutlet weak var latitudeLabel: UILabel! 
    @IBOutlet weak var longitudeLabel: UILabel! 

    override func viewDidLoad() { 
     super.viewDidLoad() 

     // Do any additional setup after loading the view. 

     latitudeLabel.text = "\(getCoordinates.locationManager.location?.coordinate.latitude)" 
     longitudeLabel.text = "\(getCoordinates.locationManager.location?.coordinate.longitude)" 


    } 

    override func didReceiveMemoryWarning() { 
     super.didReceiveMemoryWarning() 
     // Dispose of any resources that can be recreated. 
    } 

} 

Answer 1

lorsque vous appuyez sur VC

objAddSightVC.location = CLLocationCoordinate2D(latitude: your_lat, longitude: your_long) 

dans AddSightingViewController

var location : CLLocationCoordinate2D! 

et

latitudeLabel.text = String(describing: location.latitude) 
longitudeLabel.text = String(describing: location.longitude) 

Answer 2

sur storyboard ou pousser VC Initié

let coordinate = CLLocationCoordinate2D(latitude: lat, longitude: long) 
let addSightingViewController = AddSightingViewController(location :coordinate) 

à AddSightingViewController déclarer propriété emplacement avec le constructeur init

class AddSightingViewController: UIViewController { 

    let location:LLocationCoordinate2D 

    init(location:LLocationCoordinate2D!){ 

    self.location = location 
} 

override func viewDidLoad() { 
     super.viewDidLoad() 

     latitudeLabel.text = "\(location?.coordinate.latitude)" 
     longitudeLabel.text = "\(location?.coordinate.longitude)" 

} 

}