Question

我目前正在尝试创建一个大约有20个引脚的地图应用。我做了一个segue，以便转移Pin的注释标题。但是现在我需要实现它，以便从一系列20 .txt文件描述和20个图像中正确选择描述。但我相信我能用一个塞格来做到这一点。

这是我目前的代码

import UIKit
import MapKit
import CoreLocation

class ViewController: UIViewController,    MKMapViewDelegate,CLLocationManagerDelegate {

@IBOutlet weak var MapView: MKMapView!
let manager = CLLocationManager()
var artworkPin:Artwork!

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    //let location = locations[0]


    //let span:MKCoordinateSpan = MKCoordinateSpanMake(0.02, 0.02)

    //let myLocation:CLLocationCoordinate2D = CLLocationCoordinate2DMake(location.coordinate.latitude, location.coordinate.longitude)


}
override func viewDidLoad() {
    super.viewDidLoad()

    // tracking user's location
    manager.delegate = self
    manager.desiredAccuracy = kCLLocationAccuracyBest
    manager.requestWhenInUseAuthorization()
    manager.startUpdatingLocation()

    // Setting up Map
    let distanceSpan:CLLocationDegrees = 2000
    MapView.setRegion(MKCoordinateRegionMakeWithDistance(CLLocationCoordinate2DMake(-39.0556253, 174.0752278), distanceSpan, distanceSpan), animated: true)
    MapView.showsUserLocation = true
    MapView.delegate = self

    // artwork on map
    let windwandcoord: CLLocationCoordinate2D = CLLocationCoordinate2DMake(-39.055961,174.072288)
    artworkPin = Artwork(title:"Wind Wand",locationName:"Majestic",discipline:"Statue",
                             coordinate:windwandcoord)
    MapView.addAnnotation(artworkPin)

}


func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView?
{
    if annotation is MKUserLocation {return nil}

    let reuseId = "pin"

    var pinView = mapView.dequeueReusableAnnotationView(withIdentifier: reuseId) as? MKPinAnnotationView
    if pinView == nil {
        pinView = MKPinAnnotationView(annotation: annotation, reuseIdentifier: reuseId)
        pinView!.canShowCallout = true
        pinView!.animatesDrop = true
        pinView!.calloutOffset = CGPoint(x: -5, y: 5)
        let calloutButton = UIButton(type: .detailDisclosure)
        pinView!.rightCalloutAccessoryView = calloutButton
        pinView!.sizeToFit()
    }
    else {
        pinView!.annotation = annotation
    }


    return pinView
}



func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
    if control == view.rightCalloutAccessoryView {
        performSegue(withIdentifier: "no", sender:self)
    }
}


override func prepare(for segue: UIStoryboardSegue, sender: Any?) {


    let ViewTwo = segue.destination as! ViewTwo
    ViewTwo.artworkPin = self.artworkPin
}


}

如果我添加另一个引脚，我也不认为这会给出正确的标题我是否正确？因为它只是取名为 artworkPin ，而不是添加任何变量引脚。

感谢您的帮助。

使用Segue传输描述和图像

0 个答案: