クリック可能な目印を作成しています。目印のタイトルを設定しました。タイトルは住所です。その住所をクリックすると、別のビューにプッシュされ、住所番号、都市、国などが表示されます。このコードを試しました。しかし、目印のアプリケーションに UIButton がないのはなぜですか?
編集: func calloutAccessoryControlTapped にブレークポイントを設定すると、クラッシュしません。
func mapView(Mapa: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
if annotation is MKUserLocation {
//return nil so map view draws "blue dot" for standard user location
return nil
}
var pin = "pin"
var view = Mapa.dequeueReusableAnnotationViewWithIdentifier(pin) as? MKPinAnnotationView
if view == nil {
view = MKPinAnnotationView(annotation: annotation, reuseIdentifier: pin)
view!.canShowCallout = true
view!.animatesDrop = true
var arrowButton = UIButton()
view!.rightCalloutAccessoryView = UIButton.buttonWithType(.DetailDisclosure) as! UIButton
} else {
view!.annotation = annotation
}
return view
}
func mapView(Mapa: MKMapView!, annotation: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
if control == annotation.rightCalloutAccessoryView {
println("Pressed!")
}
}
コード全体:
import UIKit
import CoreLocation
import MapKit
class ViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {
@IBOutlet weak var Mapa: MKMapView!
let locationManager = CLLocationManager()
var detail: UIButton!
override func viewDidLoad()
{
super.viewDidLoad()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestAlwaysAuthorization()
locationManager.startUpdatingLocation()
Mapa.delegate = self
Mapa.mapType = MKMapType.Standard
Mapa.showsUserLocation = true
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
}
//--- Find Address of Current Location ---//
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!)
{
//--- CLGeocode to get address of current location ---//
CLGeocoder().reverseGeocodeLocation(manager.location, completionHandler: {(placemarks, error)->Void in
let spanX = 0.007
let spanY = 0.007
var newRegion = MKCoordinateRegion(center: self.Mapa.userLocation.coordinate, span: MKCoordinateSpanMake(spanX, spanY))
self.Mapa.setRegion(newRegion, animated: true)
if (error != nil)
{
println("Reverse geocoder failed with error" + error.localizedDescription)
return
}
if placemarks.count > 0
{
let pm = placemarks[0] as! CLPlacemark
self.displayLocationInfo(pm)
}
else
{
println("Problem with the data received from geocoder")
}
})
}
func displayLocationInfo(placemark: CLPlacemark?)
{
if let Placemark = placemark
{
//Stop updating kvôli vydrži baterke
locationManager.stopUpdatingLocation()
let location = self.locationManager.location
var latitude: Double = location.coordinate.latitude
var longitude: Double = location.coordinate.longitude
let adresa = (Placemark.thoroughfare != nil) ? Placemark.thoroughfare : "Ulica: "
let cislo = (Placemark.subThoroughfare != nil) ? Placemark.subThoroughfare : "Číslo ulice:"
let mesto = (Placemark.locality != nil) ? Placemark.locality : "Mesto: "
let stat = (Placemark.country != nil) ? Placemark.country : "Štát: "
var coordinates:CLLocationCoordinate2D = placemark!.location.coordinate
let theLocation: MKUserLocation = Mapa.userLocation
theLocation.title = adresa
println("GPS Súradnice :: \(latitude), \(longitude)")
println(mesto)
println(adresa)
println(cislo)
println(stat)
}
}
func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!)
{
println("Chyba pri aktualizovaní lokácie " + error.localizedDescription)
}
func mapView(Mapa: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView! {
if annotation is MKUserLocation {
//return nil so map view draws "blue dot" for standard user location
return nil
}
var pin = "pin"
var view = Mapa.dequeueReusableAnnotationViewWithIdentifier(pin) as? MKPinAnnotationView
if view == nil {
view = MKPinAnnotationView(annotation: annotation, reuseIdentifier: pin)
view!.canShowCallout = true
view!.animatesDrop = true
var arrowButton = UIButton()
view!.rightCalloutAccessoryView = UIButton.buttonWithType(.DetailDisclosure) as! UIButton
} else {
view!.annotation = annotation
}
return view
}
func mapView(Mapa: MKMapView!, annotation: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
if control == annotation.rightCalloutAccessoryView {
println("Pressed!")
}
}
}