Для школьного проекта я пытаюсь получить все близлежащие заправочные станции и создать для них аннотации, и когда пользователь нажимает на одну из них, я бы хотел указать ему направление к go. это контроллер Карт, который я реализую, выполняя поиск по inte rnet и tutoriels:
import UIKit
import MapKit
import CoreLocation
protocol MapsControllerDelegate : class {
func mapsViewControllerDidSelectAnnotation(mapItem :MKMapItem)
}
class MapsController : UIViewController {
@IBOutlet weak var maps: MKMapView!
weak var delegate :MapsControllerDelegate!
let locationManager = CLLocationManager()
let regionInMeters: Double = 1000
override func viewDidLoad() {
super.viewDidLoad()
checkLocationServices()
}
func setupLocationManager(){
locationManager.delegate = self as! CLLocationManagerDelegate
locationManager.desiredAccuracy = kCLLocationAccuracyBest
}
func centerViewOnUserLocation(){
if let location = locationManager.location?.coordinate{
let region = MKCoordinateRegion.init(center: location, latitudinalMeters: regionInMeters, longitudinalMeters: regionInMeters)
maps.setRegion(region, animated: true)
}
}
func checkLocationServices(){
if CLLocationManager.locationServicesEnabled(){
//setup the location manager.
setupLocationManager()
checkLocationAuthorization()
}
else{
//Show alert let the user know how to do it.
}
}
func checkLocationAuthorization(){
switch CLLocationManager.authorizationStatus(){
case .authorizedWhenInUse:
maps.showsUserLocation = true
centerViewOnUserLocation()
locationManager.startUpdatingLocation()
case .denied:
break
case .notDetermined:
locationManager.requestWhenInUseAuthorization()
case .restricted:
break
case .authorizedAlways:
break
}
}
func mapView(_ mapView: MKMapView, didAdd views: [MKAnnotationView]) {
let annotationView = views.first!
if let annotation = annotationView.annotation {
if annotation is MKUserLocation {
centerViewOnUserLocation()
populateNearByPlaces()
}
}
}
func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
let annotation = view.annotation as! PlaceAnnotation
self.delegate.mapsViewControllerDidSelectAnnotation(mapItem: annotation.mapItem)
}
func populateNearByPlaces(){
print("Im heeeeeerrrrreeeeeee")
if let location = locationManager.location?.coordinate{
let region = MKCoordinateRegion.init(center: location, latitudinalMeters: regionInMeters, longitudinalMeters: regionInMeters)
let request = MKLocalSearch.Request()
request.naturalLanguageQuery = "Gas Station"
request.region = region
let search = MKLocalSearch(request: request)
search.start { (response, error) in
guard let response = response else {
return
}
for item in response.mapItems {
print("I'm here")
print(item)
let annotation = PlaceAnnotation()
annotation.coordinate = item.placemark.coordinate
annotation.title = item.name
annotation.mapItem = item
DispatchQueue.main.async {
self.maps.addAnnotation(annotation)
}
}
}
}
}
}
extension MapsController: CLLocationManagerDelegate {
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
guard let location = locations.last else {return}
let center = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude)
let region = MKCoordinateRegion.init(center: center, latitudinalMeters: regionInMeters, longitudinalMeters: regionInMeters)
maps.setRegion(region, animated: true)
func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
checkLocationAuthorization()
}
}
}
У меня нет ошибок, или приложение перестает работать, но я не получаю ожидаемых результатов. В сцене с картами я просто получаю фактическое местоположение пользователя на карте и все.