Question

我是快速编程的新手。我希望当用户点击MKAnnotationPoint以在下一个视图控制器上移动时。我现在这样做的方法是按下按钮＆＃34;按钮＆＃34;正如你在image1顶部看到的那样。我的代码：

mapViewController.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mapViewController到destination viewController创建一个segue，然后执行以下操作：

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

Here是我创建的示例项目，向您展示它是如何工作的。

要编辑segue标识符，请执行以下操作：

Answer 2

将一个按钮与地图视图分开似乎是一种不恰当的方式来做这样的事情。您应该在注释视图上使用按钮，就像您拥有的详细信息项一样。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审阅控制器。您需要将MKPointAnnotation更改为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)]
    }
}

使用MKAnnotation移动下一个视图控制器

2 个答案: