23

我想在触摸 iOS 地图时添加注释并获取相应位置的详细地址（地标）。我如何在 Swift 中实现这一点？

提前致谢。

4

7 回答 7

27

要对地图上的触摸做出反应，您需要为 mapView 设置一个点击识别器

在viewDidLoad：

let gestureRecognizer = UITapGestureRecognizer(
                              target: self, action:#selector(handleTap))
    gestureRecognizer.delegate = self
    mapView.addGestureRecognizer(gestureRecognizer)

处理点击并获取点击位置坐标：

func handleTap(gestureRecognizer: UITapGestureRecognizer) {
    
    let location = gestureRecognizer.location(in: mapView)
    let coordinate = mapView.convert(location, toCoordinateFrom: mapView)
    
    // Add annotation:
    let annotation = MKPointAnnotation()
    annotation.coordinate = coordinate
    mapView.addAnnotation(annotation)
}

现在您只需要实现 MKMapView 委托函数来绘制注释。一个简单的谷歌搜索应该让你得到剩下的。

于 2015-12-23T08:45:33.897 回答
10

这是一个有效的Xcode 10.1、Swift 4.2项目，带有MapKit 委托来控制注释（引脚颜色、引脚图像等）并委托处理对添加的注释的单击： Github 项目

import UIKit
import MapKit

class ViewController: UIViewController {

@IBOutlet weak var mapView: MKMapView!

override func viewDidLoad() {
    super.viewDidLoad()
    mapView.delegate = self
    let longTapGesture = UILongPressGestureRecognizer(target: self, action: #selector(longTap))
    mapView.addGestureRecognizer(longTapGesture)
}

@objc func longTap(sender: UIGestureRecognizer){
    print("long tap")
    if sender.state == .began {
        let locationInView = sender.location(in: mapView)
        let locationOnMap = mapView.convert(locationInView, toCoordinateFrom: mapView)
        addAnnotation(location: locationOnMap)
    }
}

func addAnnotation(location: CLLocationCoordinate2D){
        let annotation = MKPointAnnotation()
        annotation.coordinate = location
        annotation.title = "Some Title"
        annotation.subtitle = "Some Subtitle"
        self.mapView.addAnnotation(annotation)
}
}

extension ViewController: MKMapViewDelegate{

func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
    guard annotation is MKPointAnnotation else { print("no mkpointannotaions"); 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!.rightCalloutAccessoryView = UIButton(type: .infoDark)
        pinView!.pinTintColor = UIColor.black
    }
    else {
        pinView!.annotation = annotation
    }
    return pinView
}

func mapView(_ mapView: MKMapView, didSelect view: MKAnnotationView) {
    print("tapped on pin ")
}

func mapView(_ mapView: MKMapView, annotationView view: MKAnnotationView, calloutAccessoryControlTapped control: UIControl) {
    if control == view.rightCalloutAccessoryView {
        if let doSomething = view.annotation?.title! {
           print("do something")
        }
    }
  }
}
于 2018-12-21T12:42:57.723 回答
2

斯威夫特 4：

 @IBOutlet weak var mapView: MKMapView!

 func handleLongPress (gestureRecognizer: UILongPressGestureRecognizer) {
    if gestureRecognizer.state == UIGestureRecognizerState.began {
        let touchPoint: CGPoint = gestureRecognizer.location(in: mapView)
        let newCoordinate: CLLocationCoordinate2D = mapView.convert(touchPoint, toCoordinateFrom: mapView)
        addAnnotationOnLocation(pointedCoordinate: newCoordinate)
    }
}

func addAnnotationOnLocation(pointedCoordinate: CLLocationCoordinate2D {
    let annotation = MKPointAnnotation()
    annotation.coordinate = pointedCoordinate
    annotation.title = "Loading..."
    annotation.subtitle = "Loading..."
    mapView.addAnnotation(annotation)
}
于 2018-01-18T08:59:48.907 回答
1

由于其他答案充分涵盖了如何处理触摸事件，下一步是使用CLGeocoder执行反向地理编码，它将位置值转换为该位置的地标列表。

func handleTap(gestureReconizer: UILongPressGestureRecognizer) {

    let location = gestureReconizer.locationInView(mapView)
    let coordinate = mapView.convertPoint(location,toCoordinateFromView: mapView)

    let geocoder = CLGeocoder()
    geocoder.reverseGeocodeLocation(coordinate) { (placemarks, error) in 
        if let places = placemarks {
            for place in places {
                print("found placemark \(place.name) at address \(place.postalAddress)"
            }
        }
    }
}
于 2019-10-03T17:19:39.687 回答
1

对于Swift 4，我转换了 Swift 3 示例，因为另一个 Swift 4 对我不起作用：（注意我使用 'mapview' 而不是 'mapView' 只是为了适应其他代码

        let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(self.handleTap(_:)))
        gestureRecognizer.delegate = self
        mapview.addGestureRecognizer(gestureRecognizer)


@objc func handleTap(_ gestureReconizer: UILongPressGestureRecognizer)
    {

        let location = gestureReconizer.location(in: mapview)
        let coordinate = mapview.convert(location,toCoordinateFrom: mapview)

        // Add annotation:
        let annotation = MKPointAnnotation()
        annotation.coordinate = coordinate
        mapview.addAnnotation(annotation)
    }
于 2018-09-20T11:13:48.677 回答
0

对于迅捷3.0

let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(self.handleTap(_:)))
gestureRecognizer.delegate = self
mapView.addGestureRecognizer(gestureRecognizer)

func handleTap(_ gestureReconizer: UILongPressGestureRecognizer) {

    let location = gestureReconizer.locationInView(mapView)
    let coordinate = mapView.convertPoint(location,toCoordinateFromView: mapView)

    // Add annotation:
    let annotation = MKPointAnnotation()
    annotation.coordinate = coordinate
    mapView.addAnnotation(annotation)
}
于 2017-12-12T19:53:22.597 回答
0 
 //put this in viewdidload

-->
 mapView.delegate = self
           let longTapGesture = UILongPressGestureRecognizer(target: self, action: #selector(longTap))
           mapView.addGestureRecognizer(longTapGesture)
    -->//

@objc func longTap(sender: UIGestureRecognizer){
    print("long tap")
    if sender.state == .began
    {
        let locationInView = sender.location(in: mapView)
        let locationOnMap = mapView.convert(locationInView, toCoordinateFrom: mapView)
        addAnnotation(location: locationOnMap)
        locationManager.stopUpdatingLocation();
        print("the location lattitude is = \(locationOnMap.latitude) and logitude on map = \(locationOnMap.longitude)")
        self.passlat = Double(locationOnMap.latitude)
        self.passlong = Double(locationOnMap.longitude)
        self.getAddressFromLatLon(pdblLatitude: "\(locationOnMap.latitude)", withLongitude: "\(locationOnMap.longitude)")

    }
}


func getAddressFromLatLon(pdblLatitude: String, withLongitude pdblLongitude: String)
{
    var center : CLLocationCoordinate2D = CLLocationCoordinate2D()
    let lat: Double = Double("\(pdblLatitude)")!
    //21.228124
    let lon: Double = Double("\(pdblLongitude)")!
    //72.833770
    let ceo: CLGeocoder = CLGeocoder()
    center.latitude = lat
    center.longitude = lon

    let loc: CLLocation = CLLocation(latitude:center.latitude, longitude: center.longitude)


    ceo.reverseGeocodeLocation(loc, completionHandler:
        {(placemarks, error) in
            if (error != nil)
            {
                print("reverse geodcode fail: \(error!.localizedDescription)")
            }
            let pm = placemarks! as [CLPlacemark]
            if pm.count > 0
            {
                let pm = placemarks![0]
               // print(pm.country)
                //print(pm.locality)
                self.mapaddcontry = pm.country!
                self.mapaddrState = pm.subLocality!
                self.mapaddrcity = pm.locality!
                self.mapaddrPincode = pm.postalCode!

                self.mainname = pm.locality!
                print(pm.subLocality)
                self.subname = pm.subLocality!
                print(pm.thoroughfare)
                print(pm.postalCode)
                print(pm.subThoroughfare)
                var addressString : String = ""
                if pm.subLocality != nil
                {
                    addressString = addressString + pm.subLocality! + ", "
                }
                if pm.thoroughfare != nil {
                    addressString = addressString + pm.thoroughfare! + ", "
                }
                if pm.locality != nil {
                    addressString = addressString + pm.locality! + ", "
                }
                if pm.country != nil
                {
                    addressString = addressString + pm.country! + ", "
                }
                if pm.postalCode != nil
                {
                    addressString = addressString + pm.postalCode! + " "
                }

                self.addr.text = addressString
                print(addressString)
                self.mapaddrtxt.text = addressString
                self.location_name = addressString

            }
    })

}
于 2019-11-07T06:31:10.650 回答