Question

我使用CLLocationManager来请求用户的位置。但是，如果他们在纽约市之外，我想默认为某些坐标。有没有办法检查他们是否在某个城市？

import UIKit
import CoreLocation
import GoogleMaps

private let kDefaultLatitude: Double = 40.713
private let kDefaultLongitude: Double = -74.000
private let kDefaultZoomLevel: Float = 16.0

class RootMapViewController: UIViewController {

  @IBOutlet weak var mapView: GMSMapView!

  let locationManager = CLLocationManager()

  override func viewDidLoad() {
    super.viewDidLoad()

    fetchLocation()
  }

  private func fetchLocation() {
    locationManager.delegate = self
    locationManager.desiredAccuracy = kCLLocationAccuracyBest
    locationManager.requestWhenInUseAuthorization()
    locationManager.startUpdatingLocation()
  }

}

// MARK: CLLocationManagerDelegate

extension RootMapViewController: CLLocationManagerDelegate {

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


    let userCoordinates = locations[0].coordinate

    // How do I check if the user is in NYC?

    // if user is in nyc
    centerMapOn(userCoordinates)
    mapView.myLocationEnabled = true
    mapView.settings.myLocationButton = true
    // else default to Times Square
  }

}

Answer 1

您可以使用反向地理编码。例如，您可以放置：

geocoder:CLGeocoder = CLGeocoder()
geocoder.reverseGeocodeLocation(locations[0],completionHandler{
if error == nil && placemarks.count > 0 {
            let location = placemarks[0] as CLPlacemark
            print(location.locality)

        })

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

中的

Swift + CLLocationManager：如何判断用户是否在特定城市？

1 个答案: