正ジオコーディング

Preview mapkit015

Swift 5.x/4.x

//
//  ViewController.swift
//  MapKit015
//
//  Created by Misato Morino on 2016/08/15.
//  Copyright © 2016年 Misato Morino. All rights reserved.
//

import UIKit
import MapKit

class ViewController: UIViewController, MKMapViewDelegate {

    var myMapView: MKMapView!
    var myPin: MKPointAnnotation!

    // 経度、緯度.
    let myLatitude: CLLocationDegrees = 37.331741
    let myLongitude: CLLocationDegrees = -122.030333

    override func viewDidLoad() {
        super.viewDidLoad()

        // UIButtonを作成する.
        let myButton: UIButton = UIButton(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
        myButton.layer.position = CGPoint(x: self.view.frame.width/2, y: self.view.frame.height-100)
        myButton.layer.masksToBounds = true
        myButton.layer.cornerRadius = 20.0
        myButton.setTitle("GeoCoding", for: .normal)
        myButton.backgroundColor = UIColor.red
        myButton.setTitleColor(UIColor.white, for: .normal)
        myButton.addTarget(self, action: #selector(ViewController.onClickMyButton(sender:)), for: .touchUpInside)

        // MapViewを生成.
        myMapView = MKMapView()
        myMapView.frame = self.view.frame

        // デリゲートを設定.
        myMapView.delegate = self

        // 中心点.
        let center: CLLocationCoordinate2D = CLLocationCoordinate2DMake(myLatitude, myLongitude)

        // MapViewに中心点を設定.
        myMapView.setCenter(center, animated: true)

        // 縮尺を指定.
        // 表示領域.
        let mySpan: MKCoordinateSpan = MKCoordinateSpan(latitudeDelta: 0.1, longitudeDelta: 0.1)
        let myRegion: MKCoordinateRegion = MKCoordinateRegion(center: center, span: mySpan)

        // MapViewにregionを追加.
        myMapView.region = myRegion

        // viewにMapViewを追加.
        self.view.addSubview(myMapView)

        // UIButtonをviewに追加.
        self.view.addSubview(myButton)

        // pinアノテーションを作成.
        myPin = MKPointAnnotation()
        myPin.title = "Latitude"
        myPin.subtitle = "Longitude"
        myPin.coordinate = center

        // アノテーションをmapViewに追加.
        myMapView.addAnnotation(myPin)
    }

    @objc func onClickMyButton(sender: UIButton) {

        // geocoderを作成.
        let myGeocoder: CLGeocoder = CLGeocoder()

        // 検索する住所.
        let myAddress: String = "1 Infinite Loop, Cupertino, CA, USA"

        // 正ジオコーディング開始
        myGeocoder.geocodeAddressString(myAddress, completionHandler: { (placemarks, error) -> Void in

            for placemark in placemarks! {
                // locationにplacemark.locationをCLLocationとして代入する
                let location: CLLocation = placemark.location!
                print("Latitude: \(location.coordinate.latitude)")
                print("Longitude: \(location.coordinate.longitude)")

                // アノテーションのtitle, subtitleにそれぞれ緯度経度をセット.
                self.myPin.title = "\(location.coordinate.latitude)"
                self.myPin.subtitle = "\(location.coordinate.longitude)"
            }
        })

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
}

Swift 3.x

//
//  ViewController.swift
//  MapKit015
//
//  Created by Misato Morino on 2016/08/15.
//  Copyright © 2016年 Misato Morino. All rights reserved.
//

import UIKit
import MapKit

class ViewController: UIViewController, MKMapViewDelegate {

    var myMapView: MKMapView!
    var myPin: MKPointAnnotation!

    // 経度、緯度.
    let myLatitude: CLLocationDegrees = 37.331741
    let myLongitude: CLLocationDegrees = -122.030333

    override func viewDidLoad() {
        super.viewDidLoad()

        // UIButtonを作成する.
        let myButton: UIButton = UIButton(frame: CGRect(x: 0, y: 0, width: 200, height: 50))
        myButton.layer.position = CGPoint(x: self.view.frame.width/2, y: self.view.frame.height-100)
        myButton.layer.masksToBounds = true
        myButton.layer.cornerRadius = 20.0
        myButton.setTitle("GeoCoding", for: .normal)
        myButton.backgroundColor = UIColor.red
        myButton.setTitleColor(UIColor.white, for: .normal)
        myButton.addTarget(self, action: #selector(ViewController.onClickMyButton(sender:)), for: .touchUpInside)

        // MapViewを生成.
        myMapView = MKMapView()
        myMapView.frame = self.view.frame

        // デリゲートを設定.
        myMapView.delegate = self

        // 中心点.
        let center: CLLocationCoordinate2D = CLLocationCoordinate2DMake(myLatitude, myLongitude)

        // MapViewに中心点を設定.
        myMapView.setCenter(center, animated: true)

        // 縮尺を指定.
        // 表示領域.
        let mySpan: MKCoordinateSpan = MKCoordinateSpan(latitudeDelta: 0.1, longitudeDelta: 0.1)
        let myRegion: MKCoordinateRegion = MKCoordinateRegionMake(center, mySpan)

        // MapViewにregionを追加.
        myMapView.region = myRegion

        // viewにMapViewを追加.
        self.view.addSubview(myMapView)

        // UIButtonをviewに追加.
        self.view.addSubview(myButton)

        // pinアノテーションを作成.
        myPin = MKPointAnnotation()
        myPin.title = "Latitude"
        myPin.subtitle = "Longitude"
        myPin.coordinate = center

        // アノテーションをmapViewに追加.
        myMapView.addAnnotation(myPin)
    }

    func onClickMyButton(sender: UIButton) {

        // geocoderを作成.
        let myGeocoder: CLGeocoder = CLGeocoder()

        // 検索する住所.
        let myAddress: String = "1 Infinite Loop, Cupertino, CA, USA"

        // 正ジオコーディング開始
        myGeocoder.geocodeAddressString(myAddress, completionHandler: { (placemarks, error) -> Void in

            for placemark in placemarks! {
                // locationにplacemark.locationをCLLocationとして代入する
                let location: CLLocation = placemark.location!
                print("Latitude: \(location.coordinate.latitude)")
                print("Longitude: \(location.coordinate.longitude)")

                // アノテーションのtitle, subtitleにそれぞれ緯度経度をセット.
                self.myPin.title = "\(location.coordinate.latitude)"
                self.myPin.subtitle = "\(location.coordinate.longitude)"
            }
        })

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
}

Swift 2.3

//
//  ViewController.swift
//  MapKit015
//
//  Created by Misato Morino on 2016/08/15.
//  Copyright © 2016年 Misato Morino. All rights reserved.
//

import UIKit
import MapKit

class ViewController: UIViewController, MKMapViewDelegate {

    var myMapView: MKMapView!
    var myPin: MKPointAnnotation!

    // 経度、緯度.
    let myLatitude: CLLocationDegrees = 37.331741
    let myLongitude: CLLocationDegrees = -122.030333

    override func viewDidLoad() {
        super.viewDidLoad()

        // UIButtonを作成する.
        let myButton: UIButton = UIButton(frame: CGRectMake(0, 0, 200, 50))
        myButton.layer.position = CGPointMake(self.view.frame.width/2, self.view.frame.height-100)
        myButton.layer.masksToBounds = true
        myButton.layer.cornerRadius = 20.0
        myButton.setTitle("GeoCoding", forState: .Normal)
        myButton.backgroundColor = UIColor.redColor()
        myButton.setTitleColor(UIColor.whiteColor(), forState: .Normal)
        myButton.addTarget(self, action: #selector(ViewController.onClickMyButton(_:)), forControlEvents: .TouchUpInside)

        // MapViewを生成.
        myMapView = MKMapView()
        myMapView.frame = self.view.frame

        // デリゲートを設定.
        myMapView.delegate = self

        // 中心点.
        let center: CLLocationCoordinate2D = CLLocationCoordinate2DMake(myLatitude, myLongitude)

        // MapViewに中心点を設定.
        myMapView.setCenterCoordinate(center, animated: true)

        // 縮尺を指定.
        // 表示領域.
        let mySpan: MKCoordinateSpan = MKCoordinateSpan(latitudeDelta: 0.1, longitudeDelta: 0.1)
        let myRegion: MKCoordinateRegion = MKCoordinateRegionMake(center, mySpan)

        // MapViewにregionを追加.
        myMapView.region = myRegion

        // viewにMapViewを追加.
        self.view.addSubview(myMapView)

        // UIButtonをviewに追加.
        self.view.addSubview(myButton)

        // pinアノテーションを作成.
        myPin = MKPointAnnotation()
        myPin.title = "Latitude"
        myPin.subtitle = "Longitude"
        myPin.coordinate = center

        // アノテーションをmapViewに追加.
        myMapView.addAnnotation(myPin)
    }

    func onClickMyButton(sender: UIButton) {

        // geocoderを作成.
        let myGeocoder: CLGeocoder = CLGeocoder()

        // 検索する住所.
        let myAddress: String = "1 Infinite Loop, Cupertino, CA, USA"

        // 正ジオコーディング開始
        myGeocoder.geocodeAddressString(myAddress, completionHandler: { (placemarks, error) -> Void in

            for placemark in placemarks! {
                // locationにplacemark.locationをCLLocationとして代入する
                let location: CLLocation = placemark.location!
                print("Latitude: \(location.coordinate.latitude)")
                print("Longitude: \(location.coordinate.longitude)")

                // アノテーションのtitle, subtitleにそれぞれ緯度経度をセット.
                self.myPin.title = "\(location.coordinate.latitude)"
                self.myPin.subtitle = "\(location.coordinate.longitude)"
            }
        })

    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
    }
}

3.xと4.xの差分

func onClickMyButton(sender: UIButton) に @objc を追加
MKCoordinateRegionMake(center, mySpan) が MKCoordinateRegion(center: center, span: mySpan)に変更

2.3と3.0の差分

setCenterCoordinate から setCenter に変更

Reference

CLGeocoder
- https://developer.apple.com/reference/corelocation/clgeocoder