import UIKit
import MapKit
import CoreLocation
class MapViewController: UIViewController {
@IBOutlet weak var mapView: MKMapView!
let locationManager = CLLocationManager()
let regionInMeters: Double = 2000
@IBAction func changeMapType(_ sender: UISegmentedControl) {
if sender.selectedSegmentIndex == 0 {
mapView.mapType = .standard
} else {
mapView.mapType = .satellite
}
}
override func viewDidLoad() {
super.viewDidLoad()
locationManager.requestWhenInUseAuthorization()
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.distanceFilter = kCLDistanceFilterNone
locationManager.startUpdatingLocation()
func checkLocationAuthorization() {
switch CLLocationManager.authorizationStatus() {
case .authorizedWhenInUse:
mapView.showsUserLocation = true
centerViewOnUserLocation()
}
}
func centerViewOnUserLocation() {
if let location = locationManager.location?.coordinate {
let region = MKCoordinateRegion.init(center: location, latitudinalMeters: regionInMeters, longitudinalMeters: regionInMeters)
mapView.setRegion(region, animated: true)
}
}
extension MapScreen: CLLocationManagerDelegate {
func locationManager( manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
}
func locationManager( manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
}
}
}
它说
“开关必须详尽无遗”
在功能checkLocationAuthorization
上显示
“声明仅在文件范围内有效”
在扩展名上?我该如何解决?
答案 0 :(得分:0)
在checkLocationAuthorization中,处理所有authorizationStatus的情况或添加如下所示的默认情况
class A {
}
extension A: <some protocol> {
}
// MARK: Doing a spefic work!!
extension A {
}
扩展
扩展名应在控制器范围之外。
{{1}}