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我正在开发一个简单的应用程序,它将显示一个地图和一些标记。我也想要在这个应用程序中显示用户的当前位置。 这里是我到目前为止的代码:缩放和当前位置不显示在地图swift
import UIKit
import MapKit
import CoreLocation
class HomePageViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate {
@IBOutlet weak var templabelforlocationtesting: UILabel!
@IBOutlet weak var map: MKMapView!
let locationManager = CLLocationManager()
@IBOutlet weak var menuButton: UIBarButtonItem!
override func viewDidLoad() {
super.viewDidLoad()
if self.revealViewController() != nil {
menuButton.target = self.revealViewController()
menuButton.action = "revealToggle:"
self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
}
// Do any additional setup after loading the view.
self.locationManager.delegate = self
self.locationManager.desiredAccuracy = kCLLocationAccuracyBest
self.locationManager.requestAlwaysAuthorization()
self.locationManager.startUpdatingLocation()
self.map.showsUserLocation = true
//temporary nearby locations list
//temple tooth
let templeToothMarker = MKPointAnnotation()
let templeToothLocation = CLLocationCoordinate2D(latitude: 7.294715, longitude: 80.639858)
templeToothMarker.coordinate = templeToothLocation
templeToothMarker.title = "Kandy Dalada Maligawa"
templeToothMarker.subtitle = "Historic Religious place"
//botanical gardens
let botanicalGardenMarker = MKPointAnnotation()
let botanicalGardenLocation = CLLocationCoordinate2D(latitude: 7.273346, longitude: 80.595140)
botanicalGardenMarker.coordinate = botanicalGardenLocation
botanicalGardenMarker.title = "Royal Botanical Gardens"
botanicalGardenMarker.subtitle = "Botanical Garden in Kandy"
//load markers to map
map.addAnnotations([templeToothMarker, botanicalGardenMarker])
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let location = locations.last! as CLLocation
let centerLocation = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude)
templabelforlocationtesting.text = "Location: " + String(location.coordinate.latitude) + " , " + String(location.coordinate.longitude)
let mapSpan = MKCoordinateSpanMake(0.06, 0.06)
let mapRegion = MKCoordinateRegion(center: centerLocation, span: mapSpan)
self.map.setRegion(mapRegion, animated: true)
self.locationManager.stopUpdatingLocation()
}
}
的地图是否工作正常,标记出,但下面的问题依然存在。
我不能得到的地图放大到更高的水平(在
let mapSpan = MKCoordinateSpanMake(0.06, 0.06)
设置的级别)的用户的当前位置,应获得并设定为地图的中心和应也显示为带有注释的当前位置。要检查位置是否已加载,我也设置了标签,但这不起作用。
我在做什么错在这里?
如果你在** let location = locations.last!处放置一个断点,作为CLLocation **你会得到什么值? – MwcsMac