ios - 快速放大用户的位置

Question

我想弄清楚如何在 Swift 2.1 中放大到用户的位置。我搜索了整个互联网世界，但找不到解决方案。感谢 Renier Melian 帮助我开始这个，但它不要求对位置进行授权，然后给出错误消息

import Foundation
import MapKit
import CoreLocation

class SocialViewController : UIViewController {

    @IBOutlet weak var mapView: MKMapView!
    var locationManager = CLLocationManager()

    override func viewDidLoad() {
        self.locationManager.requestWhenInUseAuthorization()
        super.viewDidLoad()
        self.mapView.showsUserLocation = true
        self.mapView.userTrackingMode = .Follow
        self.mapView.delegate = self
        self.locationManager.startUpdatingLocation()
        self.locationManager.delegate = self
    }
}

extension SocialViewController : MKMapViewDelegate{
    //Adjusting the zoom
    func mapView(_ mapView: MKMapView, didUpdate userLocation: MKUserLocation) {
        var region = MKCoordinateRegion()
        region.span = MKCoordinateSpanMake(0.7, 0.7); //Zoom distance
        let coordinate = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude, longitude:  userLocation.coordinate.longitude)
        region.center = coordinate
        mapView.setRegion(region, animated: true)
    }

    func mapViewWillStartLocatingUser(_ mapView: MKMapView) {
        debugPrint("startLocating")
    }
    func mapViewDidStopLocatingUser(_ mapView: MKMapView) {
        debugPrint("stopLocating")
    }
}

extension SocialViewController: CLLocationManagerDelegate
{
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        debugPrint("received Location")
    }
}

Answer 1

尝试使用此代码，更改 MKCoordinateSpanMake 的值，您可以增加或减少缩放

在您的 viewDidLoad 方法中添加这一行

import MapKit
import CoreLocation

class SocialViewController : UIViewController {

@IBOutlet weak var mapView: MKMapView!
var locationManager = CLLocationManager()

override func viewDidLoad() {
    super.viewDidLoad()
    self.mapView.showsUserLocation = true
    self.mapView.userTrackingMode = .follow
    self.mapView.delegate = self
    self.locationManager.requestWhenInUseAuthorization()
    self.locationManager.startUpdatingLocation()
    self.locationManager.delegate = self
}
}

extension SocialViewController : MKMapViewDelegate{
    //Adjusting the zoom
    func mapView(_ mapView: MKMapView, didUpdate userLocation: MKUserLocation) {
        var region = MKCoordinateRegion()
        region.span = MKCoordinateSpanMake(0.7, 0.7); //Zoom distance
        let coordinate = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude, longitude:  userLocation.coordinate.longitude)
        region.center = coordinate
        mapView.setRegion(region, animated: true)
    }

    func mapViewWillStartLocatingUser(_ mapView: MKMapView) {
        debugPrint("startLocating")
    }
    func mapViewDidStopLocatingUser(_ mapView: MKMapView) {
        debugPrint("stopLocating")
    }
}

extension SocialViewController: CLLocationManagerDelegate
{
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
       debugPrint("received Location")
    }

在您的 info.plist 中添加私钥

工作!!

希望对你有帮助