当mapview为属性时，如何使用点击标记事件

Question

我已经将mapView作为属性放置在结构中，现在我不能使用标记事件，因为我不知道如何链接到结构内部的正确mapView。

我正在尝试找出如何将“侦听器”的点击标记链接到我设置的正确mapView上。 我真的为此感到挣扎。

//Import Packages
import Foundation
import UIKit
import GoogleMaps
import FirebaseDatabase

//Set up Camera View to point to Town Center
let camera = GMSCameraPosition.camera(withLatitude: 50.535712, longitude: 0.078717, zoom: 15.4)


struct MapViewSetup{
    static let locationManager = CLLocationManager()
    static let mapView = GMSMapView.map(withFrame: CGRect.zero, camera: camera)

}


//Create an array of these markers from 'GlobalVars.swift'
var markers = [Markers.marker1, Markers.marker2, Markers.marker3, Markers.marker4, Markers.marker5, Markers.marker6, Markers.marker7, Markers.marker8, Markers.marker9, Markers.marker10, Markers.marker11]

class ViewController: UIViewController, GMSMapViewDelegate {

    override func loadView() {
        //Call the map
        view = MapViewSetup.mapView

        //Call each marker one by one, this is done so program can know which array index is what.
        showmarkers(marker_number: 0)
        showmarkers(marker_number: 1)
        showmarkers(marker_number: 2)
        showmarkers(marker_number: 3)
        showmarkers(marker_number: 4)
        showmarkers(marker_number: 5)
        showmarkers(marker_number: 6)
        showmarkers(marker_number: 7)
        showmarkers(marker_number: 8)
        showmarkers(marker_number: 9)
        showmarkers(marker_number: 10)


        MapViewSetup.locationManager.delegate = self
        MapViewSetup.locationManager.requestWhenInUseAuthorization()

    }

    func mapView(_ mapView: GMSMapView, didTap marker: GMSMarker) -> Bool {
        print("tapped on marker")

        if marker.title == "Me" {
            print("handle specific marker")
        }

        return true

        }


    //This function calls database and gets lon, lat and name, and puts it into the corresponding array. All of them can't be called marker because it won't know how to differentiate between each marker.
    func getmarker(markernumber : Int) {
        let ref = Database.database().reference()
        ref.child("/markers/\(markernumber)/coordinates/0").observeSingleEvent(of: .value) { (snapshot) in
            let lon = snapshot.value as! Double
            ref.child("/markers/\(markernumber)/coordinates/1").observeSingleEvent(of: .value) { (snapshot) in
                let lat = snapshot.value as! Double
                ref.child("/markers/\(markernumber)/properties/title").observeSingleEvent(of: .value) { (snapshot) in
                    let title = snapshot.value as! String
                    //                    ref.child("/events/0/activity").observeSingleEvent(of: .value) { (snapshot) in
                    //                        let activity = snapshot.value as! String
                    //                    print(activity)


                    //print(lon, lat, title)l
                    //Assigns marker information to corressponding marker.
                    markers[markernumber].position = CLLocationCoordinate2D(latitude: lat, longitude: lon)
                    markers[markernumber].title = title
                    markers[markernumber].snippet = "Greenspace Certified!"
                    markers[markernumber].map = MapViewSetup.mapView
                    markers[markernumber].icon = UIImage(named: "greenspace_marker")
                    //print(markers[markernumber])
                }
            }
        }
    }

    //This calls each marker and initiates getmarker func.
    func showmarkers(marker_number: Int) {

        getmarker(markernumber: marker_number)

    }



}


// MARK: - CLLocationManagerDelegate
//1
extension ViewController: CLLocationManagerDelegate {
    // 2
    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
        // 3
        guard status == .authorizedWhenInUse else {
            return
        }
        // 4
        MapViewSetup.locationManager.startUpdatingLocation()

        //5
        MapViewSetup.mapView.isMyLocationEnabled = true
        MapViewSetup.mapView.settings.myLocationButton = true
    }

    // 6
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        guard let location = locations.first else {
            return
        }

        // 7
        MapViewSetup.mapView.camera = GMSCameraPosition(target: location.coordinate, zoom: 15.7, bearing: 0, viewingAngle: 0)

        // 8
        MapViewSetup.locationManager.stopUpdatingLocation()
    }
}