Swift mapkit没有指向位置

Question

我有一个ios应用程序，用于使用mapkit和corelocation。该应用程序没有错误，但地图没有确定我在xcode模拟器中的当前位置，并在实际设备上运行时，它不显示土地景观和其他东西。只是一个单一道路的空白地图，无法放大或缩小。下面是我的代码

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

    //IF we have coordinate from manager
    //let location = locations.last as CLLocation
    if let location = locationManager.location?.coordinate{

        userLocation = CLLocationCoordinate2D(latitude: location.latitude, longitude: location.longitude)

        let region = MKCoordinateRegion(center: userLocation!, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01))
        mapView.setRegion(region, animated: true)

         mapView.removeAnnotations(mapView.annotations)


        let annotation = MKPointAnnotation()
        annotation.coordinate = userLocation!
        annotation.title = "Me!"
        mapView.addAnnotation(annotation)


    }
}

将根据要求提供额外的代码

Answer 1

在这里，我用这个类来显示Pin到位置 -

import UIKit
import  MapKit
class ContactViewController: UIViewController,MKMapViewDelegate,CLLocationManagerDelegate {

@IBOutlet var viewBG1: UIView!
@IBOutlet var mapview: MKMapView!
override func showPinLocation() {

    let annotation = MKPointAnnotation()
    annotation.title = "Title"
    var coordinate = CLLocationCoordinate2D()
    coordinate.latitude = 28.702466
    coordinate.longitude = 77.1016314
    annotation.coordinate = coordinate

    var region = MKCoordinateRegion()
    var span = MKCoordinateSpan()

    span.latitudeDelta = 0.002;     // 0.0 is min value u van provide for zooming
    span.longitudeDelta = 0.002
    region.span=span;
    region.center = coordinate;     // to locate to the center
    self.mapview.addAnnotation(annotation)
    self.mapview.setRegion(region, animated: true)
    self.mapview.regionThatFits(region)
    // Do any additional setup after loading the view.
}

Answer 2

模拟器正在做它应该做的事情。您可以从调试菜单更改位置：

如果您正在使用故事板，请转到地图视图并查找这些内容以编辑您的视图：

和

您可以将地图设置为混合并获取街道和卫星，您还可以使您的mapView可扩展以及许多其他内容。

如果要以编程方式设置视图类型，you can implement a segmented control and do this：

@IBAction func segmentedControlAction(sender: UISegmentedControl!) {
    switch (sender.selectedSegmentIndex) {
        case 0:
            mapView.mapType = .Standard
        case 1:
            mapView.mapType = .Satellite
        default:
            mapView.mapType = .Hybrid
    }
}

并以编程方式设置UI：

self.mapView.zoomEnabled = true;
self.mapView.scrollEnabled = true;
self.mapView.userInteractionEnabled = true;