SWIFT – 在MKMapView中显示当前位置和更新位置
我正在学习如何使用新的Swift语言（只有SWIFT，没有Objective-C）。 要做到这一点，我想用一个地图（MKMapView）做一个简单的视图。 我想find并更新用户的位置（如在苹果地图应用程序中）。
我尝试过，但没有发生…
import MapKit import CoreLocation class MapView : UIViewController, CLLocationManagerDelegate { @IBOutlet weak var map: MKMapView! var locationManager: CLLocationManager! override func viewDidLoad() { super.viewDidLoad() if (CLLocationManager.locationServicesEnabled()) { locationManager = CLLocationManager() locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyBest locationManager.requestAlwaysAuthorization() locationManager.startUpdatingLocation() } } } 你可以帮我吗 ？
您必须重写CLLocationManager.didUpdateLocations （ CLLocationManager.didUpdateLocations一部分）以在位置pipe理器检索当前位置时得到通知：
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) { let location = locations.last as CLLocation let center = CLLocationCoordinate2D(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude) let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01)) self.map.setRegion(region, animated: true) }
注意：如果您的目标是iOS 8或更高版本，则必须在Info.plist中包含NSLocationAlwaysUsageDescription或NSLocationWhenInUseUsageDescription项，以使位置服务正常工作。
对于swift 3和XCode 8，我find了这个答案：
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首先，您需要将隐私设置为info.plist。 插入stringNSLocationWhenInUseUsageDescription与您的描述为什么你想获得用户的位置。 例如，设置string“For map in application”。
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其次，使用这个代码示例
@IBOutlet weak var mapView: MKMapView! private var locationManager: CLLocationManager! private var currentLocation: CLLocation? override func viewDidLoad() { super.viewDidLoad() mapView.delegate = self locationManager = CLLocationManager() locationManager.delegate = self locationManager.desiredAccuracy = kCLLocationAccuracyBest // Check for Location Services if CLLocationManager.locationServicesEnabled() { locationManager.requestWhenInUseAuthorization() locationManager.startUpdatingLocation() } } // MARK - CLLocationManagerDelegate func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { defer { currentLocation = locations.last } if currentLocation == nil { // Zoom to user location if let userLocation = locations.last { let viewRegion = MKCoordinateRegionMakeWithDistance(userLocation.coordinate, 2000, 2000) mapView.setRegion(viewRegion, animated: false) } } } -
第三，在storyboard中为mapView设置用户位置标志。
MyLocation是一个Swift iOS演示。
你可以使用这个演示如下：
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显示当前位置。
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select其他位置：在这种情况下停止跟踪位置。
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触摸时向MKMapView（iOS）添加一个推针。
对于Swift 2，你应该将其更改为以下内容：
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { let location = locations.last let center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude, longitude: location!.coordinate.longitude) let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01)) self.map.setRegion(region, animated: true) }
你必须重写CLLocationManager.didUpdateLocations
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { let userLocation:CLLocation = locations[0] as CLLocation locationManager.stopUpdatingLocation() let location = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude, longitude: userLocation.coordinate.longitude) let span = MKCoordinateSpanMake(0.5, 0.5) let region = MKCoordinateRegion (center: location,span: span) mapView.setRegion(region, animated: true) }
你还必须添加NSLocationWhenInUseUsageDescription和NSLocationAlwaysUsageDescription到你的plist设置Result作为值
在Swift 4中，我使用了上面定义的locationManager委托函数。
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
..但这需要改变..
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
这来自.. https://github.com/lotfyahmed/MyLocation/blob/master/MyLocation/ViewController.swift – 谢谢！