Convert coordinates to City name?

Question

How to get an address from coordinates using MapKit?

I have this code when long press on the map it gets the coordinates:

func didLongPressMap(sender         


        

Answer 1

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SWIFT 4.2 : EDIT

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MapKit framework does provide a way to get address details from coordinates.

You need to use reverse geocoding of map kit. CLGeocoder class is used to get the location from address and address from the location (coordinates). The method reverseGeocodeLocation will returns the address details from coordinates.

This method accepts CLLocation as a parameter and returns CLPlacemark, which contains address dictionary.

So now above method will be updated as:

@objc func didLongPressMap(sender: UILongPressGestureRecognizer) {

    if sender.state == UIGestureRecognizer.State.began {
        let touchPoint = sender.location(in: mapView)
        let touchCoordinate = mapView.convert(touchPoint, toCoordinateFrom: self.mapView)
        let annotation = MKPointAnnotation()
        annotation.coordinate = touchCoordinate
        annotation.title = "Your position"
        mapView.addAnnotation(annotation) //drops the pin
        print("lat:  \(touchCoordinate.latitude)")
        let num = touchCoordinate.latitude as NSNumber
        let formatter = NumberFormatter()
        formatter.maximumFractionDigits = 4
        formatter.minimumFractionDigits = 4
        _ = formatter.string(from: num)
        print("long: \(touchCoordinate.longitude)")
        let num1 = touchCoordinate.longitude as NSNumber
        let formatter1 = NumberFormatter()
        formatter1.maximumFractionDigits = 4
        formatter1.minimumFractionDigits = 4
        _ = formatter1.string(from: num1)
        self.adressLoLa.text = "\(num),\(num1)"

        // Add below code to get address for touch coordinates.
        let geoCoder = CLGeocoder()
        let location = CLLocation(latitude: touchCoordinate.latitude, longitude: touchCoordinate.longitude)
        geoCoder.reverseGeocodeLocation(location, completionHandler:
            {
                placemarks, error -> Void in

                // Place details
                guard let placeMark = placemarks?.first else { return }

                // Location name
                if let locationName = placeMark.location {
                    print(locationName)
                }
                // Street address
                if let street = placeMark.thoroughfare {
                    print(street)
                }
                // City
                if let city = placeMark.subAdministrativeArea {
                    print(city)
                }
                // Zip code
                if let zip = placeMark.isoCountryCode {
                    print(zip)
                }
                // Country
                if let country = placeMark.country {
                    print(country)
                }
        })
    }
}

Answer 2

Thanks @Kampai for his answer, I revised a bit so it works with Swift 1.2:

        var geocoder = CLGeocoder()
        var location = CLLocation(latitude: IC.coordinate!.latitude, longitude: IC.coordinate!.longitude)
        geocoder.reverseGeocodeLocation(location) {
            (placemarks, error) -> Void in
            if let placemarks = placemarks as? [CLPlacemark] where placemarks.count > 0 {
                var placemark = placemarks[0]
                println(placemark.addressDictionary)
        }

Result:

[SubLocality: Sydney, Street: 141 Harrington Street, State: NSW, SubThoroughfare: 141, CountryCode: AU, ZIP: 2000, Thoroughfare: Harrington Street, Name: 141 Harrington Street, Country: Australia, FormattedAddressLines: ( "141 Harrington Street", "The Rocks NSW 2000", Australia ), City: The Rocks]

Answer 3

func placePicker(_ viewController: GMSPlacePickerViewController, didPick place: GMSPlace) {

    viewController.dismiss(animated: true, completion: nil)
    let geoCoder = CLGeocoder()
    let location = CLLocation(latitude: place.coordinate.latitude, longitude: place.coordinate.longitude)
    geoCoder.reverseGeocodeLocation(location, completionHandler: { (placemarks, error) -> Void in

        // Place details
        var placeMark: CLPlacemark!
        placeMark = placemarks?[0]

        // Address dictionary
        print(placeMark.addressDictionary as Any)
   // 

    print("Place name \(place.name)")
    print("Place address \(String(describing: place.formattedAddress))")
    print("Place attributions \(String(describing: place.attributions))")



})
}

use this code this will resolve the issue.

Answer 4

For Swift 3: and Swift 4

First you need to set allowance to receive User's GPS in the info.plist.

Set: NSLocationWhenInUseUsageDescription with a random String. And/or: NSLocationAlwaysUsageDescription with a random String.

Then I have set up a class to get the desired data like zip, town, country...:

import Foundation
import MapKit

typealias JSONDictionary = [String:Any]

class LocationServices {

    let shared = LocationServices()
    let locManager = CLLocationManager()
    var currentLocation: CLLocation!

    let authStatus = CLLocationManager.authorizationStatus()
    let inUse = CLAuthorizationStatus.authorizedWhenInUse
    let always = CLAuthorizationStatus.authorizedAlways

    func getAdress(completion: @escaping (_ address: JSONDictionary?, _ error: Error?) -> ()) {

        self.locManager.requestWhenInUseAuthorization()

        if self.authStatus == inUse || self.authStatus == always {

            self.currentLocation = locManager.location

            let geoCoder = CLGeocoder()

            geoCoder.reverseGeocodeLocation(self.currentLocation) { placemarks, error in

                if let e = error {

                    completion(nil, e)

                } else {

                    let placeArray = placemarks as? [CLPlacemark]

                    var placeMark: CLPlacemark!

                    placeMark = placeArray?[0]

                    guard let address = placeMark.addressDictionary as? JSONDictionary else {
                        return
                    }

                    completion(address, nil)

                }

            }

        }

    }

}

Called by:

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        LocationServices.shared.getAdress { address, error in

            if let a = address, let city = a["City"] as? String {
               //
            }

        }

    }

}

Done

Answer 5

Thanks to @Kampi for this. This is an updated Swift 2.0 (Xcode 7) Version:

func setUsersClosestCity()
{
    let geoCoder = CLGeocoder()
    let location = CLLocation(latitude: _point1.coordinate.latitude, longitude: _point1.coordinate.longitude)
    geoCoder.reverseGeocodeLocation(location)
    {
        (placemarks, error) -> Void in

        let placeArray = placemarks as [CLPlacemark]!

        // Place details
        var placeMark: CLPlacemark!
        placeMark = placeArray?[0]

        // Address dictionary
        print(placeMark.addressDictionary)

        // Location name
        if let locationName = placeMark.addressDictionary?["Name"] as? NSString
        {
            print(locationName)
        }

        // Street address
        if let street = placeMark.addressDictionary?["Thoroughfare"] as? NSString
        {
            print(street)
        }

        // City
        if let city = placeMark.addressDictionary?["City"] as? NSString
        {
            print(city)
        }

        // Zip code
        if let zip = placeMark.addressDictionary?["ZIP"] as? NSString
        {
            print(zip)
        }

        // Country
        if let country = placeMark.addressDictionary?["Country"] as? NSString
        {
            print(country)
        }
    }
}

Answer 6

Swift 4.2 Keep it as simple as possible, look at the Apple doc and modify it as you need:

func retreiveCityName(lattitude: Double, longitude: Double, completionHandler: @escaping (String?) -> Void)
{
    let geocoder = CLGeocoder()
    geocoder.reverseGeocodeLocation(CLLocation(latitude: latitude, longitude: longitude), completionHandler:
    {
        placeMarks, error in

        completionHandler(placeMarks?.first?.locality)
     })
}