我试图在我的 map 中显示一些商店并且它工作正常(用户第二次访问该 MapViewController,但第一次(当它要求用户许可位置时)它只显示用户位置和 map 未在用户位置“缩放”。
我要展示我的代码,它非常简单明了:
已更新新代码(它仍然无法正常工作,“didChangeAuthorizationStatus”未打印任何内容:
import UIKit
import MapKit
class MapViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate {
let LoadURL = "http://www.website.es/shops.json"
var coordinates = CLLocation()
@IBOutlet weak var mapView:MKMapView!
var farmacia = [Farmacia]()
let locationManager = CLLocationManager()
var currentLocation = CLLocation()
var latitudeValor = String()
var longitudeValor = String()
override func viewDidLoad() {
super.viewDidLoad()
locationManager.delegate = self
// Request for a user's authorization for location services
locationManager.requestWhenInUseAuthorization()
if CLLocationManager.locationServicesEnabled() {
locationManager.startUpdatingLocation()
requestLocation()
}
}
func requestLocation () {
let status = CLLocationManager.authorizationStatus()
if status == CLAuthorizationStatus.AuthorizedWhenInUse || status == CLAuthorizationStatus.AuthorizedAlways {
self.mapView.showsUserLocation = true
var currentLocation = CLLocation()
print(locationManager.location)
if locationManager.location != nil
{
currentLocation = locationManager.location!
let center = CLLocationCoordinate2D(latitude: currentLocation.coordinate.latitude, longitude: currentLocation.coordinate.longitude)
let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01))
latitudeValor = String(currentLocation.coordinate.latitude)
longitudeValor = String(currentLocation.coordinate.longitude)
self.mapView.setRegion(region, animated: true)
requestPost()
mapView.delegate = self
}
}
}
func locationManager(locationManager: CLLocationManager, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
switch status {
case .NotDetermined:
self.locationManager.requestWhenInUseAuthorization()
break
case .AuthorizedWhenInUse:
self.locationManager.startUpdatingLocation()
requestLocation()
break
case .AuthorizedAlways:
self.locationManager.startUpdatingLocation()
requestLocation()
break
case .Restricted:
// restricted by e.g. parental controls. User can't enable Location Services
break
case .Denied:
// user denied your app access to Location Services, but can grant access from Settings.app
break
}
}
/*
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.mapView.setRegion(region, animated: true)
requestPost()
mapView.delegate = self
}
*/
func requestPost () {
let myUrl = NSURL(string: "http://www.website.es/shops_by_position.php");
let request = NSMutableURLRequest(URL:myUrl!);
request.HTTPMethod = "POST"
let postString = "latitude="+latitudeValor+"&longitude="+longitudeValor
request.HTTPBody = postString.dataUsingEncoding(NSUTF8StringEncoding)
let session = NSURLSession.sharedSession()
let task = session.dataTaskWithRequest(request) { (data:NSData?, response:NSURLResponse?, error:NSError?) -> Void in
// JSON RESULTADO ENTERO
//let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding)!
//print("responseString = \(responseString)")
if error != nil
{
//print("error=\(error)")
return
}
else
{
self.farmacia = self.parseJsonData(data!)
}
}
task.resume()
}
func parseJsonData(data: NSData) -> [Farmacia] {
let farmacias = [Farmacia]()
do {
let jsonResult = try NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers) as? NSDictionary
// Parse JSON data
let jsonProductos = jsonResult?["farmacias"] as! [AnyObject]
//print(jsonProductos)
for jsonProducto in jsonProductos {
let farmacia = Farmacia()
farmacia.id = jsonProducto["id"] as! String
farmacia.nombre = jsonProducto["nombre"] as! String
farmacia.latitude = jsonProducto["latitude"] as! String
farmacia.longitude = jsonProducto["longitude"] as! String
let stringLat = NSString(string: farmacia.latitude)
let stringLon = NSString(string: farmacia.longitude)
let latitude: CLLocationDegrees = stringLat.doubleValue
let longitude: CLLocationDegrees = stringLon.doubleValue
coordinates = CLLocation(latitude: latitude,longitude: longitude)
let geoCoder = CLGeocoder()
geoCoder.reverseGeocodeLocation(coordinates, completionHandler: { placemarks, error in
if error != nil
{
//print(error)
return
}
else
{
if placemarks != nil && placemarks!.count > 0 {
let placemark = placemarks?[0]
// Add Annotation
let annotation = MKPointAnnotation()
annotation.title = farmacia.nombre
annotation.coordinate = placemark!.location!.coordinate
self.mapView.addAnnotation(annotation)
}
}
})
}
}
catch let parseError {
print(parseError)
}
return farmacias
}
func mapView(mapView: MKMapView, viewForAnnotation annotation: MKAnnotation) -> MKAnnotationView? {
let identifier = "MyPin"
if annotation.isKindOfClass(MKUserLocation) {
return nil
}
let detailButton: UIButton = UIButton(type: UIButtonType.DetailDisclosure)
// Reuse the annotation if possible
var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(identifier)
if annotationView == nil
{
annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: "pin")
annotationView!.canShowCallout = true
annotationView!.image = UIImage(named: "pin.png")
annotationView!.rightCalloutAccessoryView = detailButton
}
else
{
annotationView!.annotation = annotation
}
return annotationView
}
func mapView(mapView: MKMapView, annotationView: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
if control == annotationView.rightCalloutAccessoryView {
performSegueWithIdentifier("PinDetail2", sender: annotationView)
}
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if segue.identifier == "PinDetail" {
let destinationController = segue.destinationViewController as! FarmaciaDetailViewController
destinationController.titulo_farmacia = (sender as! MKAnnotationView).annotation!.title!
}
if segue.identifier == "PinDetail2" {
let destinationController = segue.destinationViewController as! FarmaciaWebDetailViewController
destinationController.nombre_farmacia = (sender as! MKAnnotationView).annotation!.title!
}
}
@IBAction func cancelToMap(segue:UIStoryboardSegue) {
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
我的问题是:为了在应用程序第一次请求许可并且用户选择"is"时显示用户位置缩放和我的商店条目,我必须更改什么?
这是我第一次使用 MapKit 框架,我有点迷茫,如果你能给我一些启发,我将不胜感激。
最佳答案
1)改变
class MapViewController: UIViewController, MKMapViewDelegate {
到
class MapViewController: UIViewController, MKMapViewDelegate, CLLocationManagerDelegate {
2)改变
func locationManager(locationManager: CLLocationManager!, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
switch status {
case .NotDetermined:
self.locationManager.requestAlwaysAuthorization()
到
self.locationManager.requestWhenInUseAuthorization()
3) 添加NSLocationWhenInUseUsageDescription
到Info.plist
编辑
4) 在viewDidLoad
中添加如下代码
locationManager.delegate = self
编辑 2
5) 添加import
到header
import CoreLocation
关于swift - map 在 Swift2 iOS9 中第一次不读取代码,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/33277947/