【发布时间】：2020-06-18 15:42:58
【问题描述】：
大家下午好，
我在应用程序中绘制折线时遇到问题，我已经尝试在 func 方法 locationManager (_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) 中调用它{}
但没有生成任何内容，就像我希望标记折线的每一步而不是在旅程结束时一样。我在下面留下我的代码：
import UIKit
import MapKit
import CoreLocation
class ViewController: UIViewController, CLLocationManagerDelegate,MKMapViewDelegate {
@IBOutlet var Maps: MKMapView!
var locationManager = CLLocationManager()
var coordenadas = CLLocationCoordinate2D()
var startPoint = MKDirections.Request()
var ArrayDeCoordenadas: [CLLocationCoordinate2D] = []
var tap: Int = 0
func getDirections(){
let request = MKDirections.Request()
request.source = MKMapItem.forCurrentLocation()
request.requestsAlternateRoutes = true
let directions = MKDirections(request: request)
directions.calculate { (response, error) in
if error != nil {
print("Error \(error)")
} else {
//self.dispLayRout(response)
var overlays = self.Maps.overlays
self.Maps.removeOverlays(overlays)
for route in response!.routes as! [MKRoute] {
self.Maps.addOverlay(route.polyline,
level: MKOverlayLevel.aboveRoads)
var instructionNumber = 0
for next in route.steps {
instructionNumber += 1
print(next.instructions)
}
}
}
}
}
func alertLocation(title: String, Message:String){
let alert = UIAlertController(title: title, message: Message, preferredStyle: .alert)
let actionAlert = UIAlertAction(title: "Acept", style: .default, handler: nil)
alert.addAction(actionAlert)
self.present(alert, animated: true,completion: nil)
}
func LocalizationInit(){
let autorization = CLLocationManager.authorizationStatus()
switch autorization{
case .notDetermined, .restricted:
locationManager.requestLocation()
break;
case .restricted, .denied:
alertLocation(title: "We have a Error", Message: "You have your localization restricted.")
case .authorizedAlways,.authorizedWhenInUse:
break;
default:
break;
}
}
@IBAction func Share(_ sender: UIButton) {
let compartir = UIActivityViewController(activityItems: ["Share baby" as Any],
applicationActivities: nil)
compartir.popoverPresentationController?.sourceView = self.view
present(compartir,animated: true,completion: nil)
}
@IBAction func recordButton(_ sender: UIButton) {
if sender.isSelected != true {
tap += 1
print("tap -> :\(tap)")
if tap == 1{
let annotation = MKPointAnnotation()
annotation.title = "My route"
annotation.subtitle = "I Hoppe"
annotation.coordinate = coordenadas
let annotation2 = MKPointAnnotation()
annotation2.title = "My ride"
annotation2.subtitle = "I Hoppe"
annotation.coordinate = locationManager.location?.coordinate as! CLLocationCoordinate2D
self.Maps.addAnnotation(annotation)
}else if tap == 2 {
tap = 0
locationManager.stopMonitoringSignificantLocationChanges()
}
}
}
@IBAction func mapOptions(_ sender: UISegmentedControl) {
switch sender.selectedSegmentIndex{
case 0:
Maps.mapType = MKMapType.standard
break;
case 1:
Maps.mapType = MKMapType.satellite
break;
case 2:
Maps.mapType = MKMapType.hybrid
break;
default:
break;
}
}
override func viewDidLoad() {
super.viewDidLoad()
LocalizationInit()
let polyLineMake = MKPolyline(coordinates: ArrayDeCoordenadas, count: ArrayDeCoordenadas.count)
self.Maps.addOverlay(polyLineMake, level: .aboveRoads)
Maps.showsUserLocation = true
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBestForNavigation
DispatchQueue.main.async {
self.locationManager.startUpdatingLocation()
}
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
coordenadas = manager.location?.coordinate as! CLLocationCoordinate2D
ArrayDeCoordenadas.append(locations.last!.coordinate)
print("Array de coordenadas : -> \(ArrayDeCoordenadas)")
let region = MKCoordinateRegion(center: locations.last!.coordinate, latitudinalMeters: 200,
longitudinalMeters: 200)
self.Maps.setRegion(region, animated: false)
let distancia = locations.distance(from: Int(manager.location!.coordinate.latitude), to:
Int((locations.last?.coordinate.latitude)!))
print("distancia \(distancia)")
}
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
if annotation is MKUserLocation{
return nil
}
let pin = MKPinAnnotationView(annotation: annotation, reuseIdentifier: "My personal pin")
pin.pinTintColor = UIColor.green
return pin
}
func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
if overlay is MKPolyline{
let polyline = overlay
let polyLineRender = MKPolylineRenderer(overlay: polyline)
print(" se esta generando \(polyline)")
polyLineRender.strokeColor = UIColor.red
polyLineRender.lineWidth = 6.0
return polyLineRender
}
print(" no se esta generando")
return MKPolylineRenderer()
} }
我已经阅读了一些文档，显然我的代码很好，如果有人可以帮助我，那将有很大的帮助！就像某人一样，如果您有任何方法可以帮助我知道我什么时候做的以及我走了多少步，因为我没有看到 CLLocation 有此类信息的选项。
【问题讨论】：
标签： ios iphone xcode swift4 swift5.2