使用 MKAnnotation 移动到下一个 View Controller

Question

我是快速编程的新手。我想当用户点击 MKAnnotationPoint 移动到下一个视图控制器时。我现在的做法是按下 image1 顶部的“按钮”按钮。我的代码：

ma​​pViewController.swift

import UIKit
import MapKit
import CoreLocation

class mapViewController: UIViewController, UITextFieldDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate, CLLocationManagerDelegate, MKMapViewDelegate {

    // MARK: Properties
    let pin = UIImage(named: "pin")
    var annotationTouched = String()
    var viaSegue = MKAnnotationView()

    // MARK: MAP
    @IBOutlet weak var mapView: MKMapView!


    let coreLocationManager = CLLocationManager()
    let locations = LocationList().Location

    // all locations will be stored on this array
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation])
    {
        let location = locations [0]

        //map zoomed
        let span:MKCoordinateSpan = MKCoordinateSpanMake(0.003, 0.003)
        //users location
        let myLocation:CLLocationCoordinate2D = CLLocationCoordinate2DMake(location.coordinate.latitude, location.coordinate.longitude)

        let region:MKCoordinateRegion = MKCoordinateRegionMake(myLocation, span)
        mapView.setRegion(region, animated: true)

        self.mapView.showsUserLocation = true
    }

    // func to change red pin to my custom pin
    func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView?
    {

        if let annotation = annotation as? Locations{
            if let view = mapView.dequeueReusableAnnotationView(withIdentifier: annotation.identifier){
                return view
            }else{
                let view = MKAnnotationView(annotation: annotation, reuseIdentifier: annotation.identifier)
                view.image = pin
                view.isEnabled = true
                view.canShowCallout = true
                //view.leftCalloutAccessoryView = UIImageView(image: pin)
                let btn = UIButton(type: .detailDisclosure)
                view.rightCalloutAccessoryView = btn

                return view
            }
        }
        return nil
    }

    // assigning the pin that is selected in the map to the annotation touched variable
    func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView)
    {
        if let annotation = view.annotation as? Locations {
            annotationTouched = annotation.title ?? "No title"
        }
    }


    override func viewDidLoad()
    {
        super.viewDidLoad()

        coreLocationManager.delegate = self
        //desired accuracy is the best accuracy, very accurate data for the location
        coreLocationManager.desiredAccuracy = kCLLocationAccuracyBest
        //request authorization from the user when user using my app
        coreLocationManager.requestWhenInUseAuthorization()

        coreLocationManager.startUpdatingLocation()

        mapView.delegate = self

        mapView.addAnnotations(locations)
    }

    // passing the name of the place on the next view controller which is the review view controller (RateViewController)
    override func prepare(for segue: UIStoryboardSegue, sender: Any?)
    {
        let destViewController : RateViewController = segue.destination as! RateViewController
        destViewController.placeLabelString = annotationTouched

    }


}

Locations.swift

import UIKit
import MapKit

class Locations: NSObject, MKAnnotation {
    // required coordinate, title, and the reuse identifier for this annotation
    var identifier = "locations"
    var title: String?
    var coordinate: CLLocationCoordinate2D
    //initializer taking a name, a latitude and longitude to populate the title and coordinate for each instance of this object
    init(name:String,lat:CLLocationDegrees,long:CLLocationDegrees){
        title = name
        coordinate = CLLocationCoordinate2DMake(lat, long)
    }

}
// Creating the list of the places that will be pinned in map
class LocationList: NSObject {
    var Location = [Locations]()
    override init(){
        Location += [Locations(name: "Dio Con Dio", lat: 40.590130, long: 23.036610)]
        Location += [Locations(name: "Paradosiako - Panorama", lat: 40.590102, long:23.036180)]
        Location += [Locations(name: "Veranda",  lat: 40.607740, long: 23.103044)]
        Location += [Locations(name: "Markiz",  lat: 40.634252, long: 22.936276)]
        Location += [Locations(name: "Moi Lounge Bar",  lat: 40.653481, long: 22.994131)]
        Location += [Locations(name: "Boulevard Lounge Bar",  lat: 40.658462, long: 22.983198)]
        Location += [Locations(name: "Ernést Hébrard",  lat: 40.631829, long: 22.941014)]
        Location += [Locations(name: "Tribeca - All Day & Night Bar",  lat: 40.631029, long: 22.942396)]

    }
}

Answer 1

从你的mapViewController 到你的destination viewController 创建一个segue，然后这样做：

func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
    self.performSegue(withIdentifier: "destViewController", sender: nil)
}

Here 是我创建的一个示例项目，它向您展示了它是如何工作的。

要编辑 segue 标识符，请执行以下操作：

Answer 2

将按钮与地图视图分开似乎是一种不恰当的做法。您应该使用注释视图上的按钮，例如您拥有的详细信息项目。当用户按下注释视图上的详细信息按钮时，下面的代码将转到添加评论控制器。您需要将 MKPointAnnotation 更改为您的 Locations，因为您尚未提供该自定义类的代码。

import UIKit
import MapKit
import CoreLocation

class MapViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {


    @IBOutlet weak var mapView: MKMapView!

    let locationManager: CLLocationManager = {

        let manager = CLLocationManager()

        manager.requestWhenInUseAuthorization()

        manager.desiredAccuracy = kCLLocationAccuracyBest

        manager.startUpdatingLocation()

        return manager
    }()

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.

        self.locationManager.delegate = self

        self.mapView.addAnnotations(LocationList().Location)
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

        // When the user's location updates, the map will be recentered on the user. This does the same as all your code.

        self.mapView.setUserTrackingMode(.follow, animated: true)
    }

    func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {

        if let pin = annotation as? Locations {

            let view = mapView.dequeueReusableAnnotationView(withIdentifier: "pin") ?? MKPinAnnotationView(annotation: pin, reuseIdentifier: "pin")

            view.canShowCallout = true

            view.image = UIImage(named: "pin")

            let reviewButton = UIButton(type: .detailDisclosure)

            reviewButton.addTarget(self, action: #selector(self.addReview), for: .touchUpInside)

            view.rightCalloutAccessoryView = reviewButton

            return view
        }

        return nil
    }

    func addReview(){
        // This gets called with the detail declosure button is pressed.

        // This gets the selected pin.
        if let pin = self.mapView.selectedAnnotations.first as? Locations { 
            // This gets the view controller from your storyboard
            guard let vc = self.storyboard?.instantiateViewController(withIdentifier: "ReviewViewController") as? ReviewViewController else { return }

            // This passes the locations pin to the review view controller
            vc.pin = pin

            // This shows the review view controller
            self.navigationController?.pushViewController(vc, animated: true)
        }
    }
}

class ReviewViewController: UIViewController {

    @IBOutlet weak var locationLabel: UILabel!

    @IBOutlet weak var reviewTextField: UITextField!

    var pin: Locations!

    override func viewDidLoad() {
        super.viewDidLoad()

        self.navigationItem.title = "Write a Review"

        self.locationLabel.text = pin.title

        let sendButton = UIBarButtonItem(title: "Send", style: .done, target: self, action: #selector(self.submitReview))

        self.navigationItem.rightBarButtonItem = sendButton
    }

    func submitReview(){

        print("Your review is: \(self.reviewTextField.text ?? "Why didn't you write anything?")")
    }
}

class Locations: NSObject, MKAnnotation {

    var title: String?

    var coordinate: CLLocationCoordinate2D

    init(name:String,lat:CLLocationDegrees,long:CLLocationDegrees){

        title = name

        coordinate = CLLocationCoordinate2DMake(lat, long)
    }
}

class LocationList: NSObject {

    var Location = [Locations]()

    override init(){

        Location += [Locations(name: "Dio Con Dio", lat: 40.590130, long: 23.036610)]
        Location += [Locations(name: "Paradosiako - Panorama", lat: 40.590102, long:23.036180)]
        Location += [Locations(name: "Veranda",  lat: 40.607740, long: 23.103044)]
        Location += [Locations(name: "Markiz",  lat: 40.634252, long: 22.936276)]
        Location += [Locations(name: "Moi Lounge Bar",  lat: 40.653481, long: 22.994131)]
        Location += [Locations(name: "Boulevard Lounge Bar",  lat: 40.658462, long: 22.983198)]
        Location += [Locations(name: "Ernést Hébrard",  lat: 40.631829, long: 22.941014)]
        Location += [Locations(name: "Tribeca - All Day & Night Bar",  lat: 40.631029, long: 22.942396)]
    }
}