MKMapView

MKMapView.md

MKMapView

★ MapViewにオーバーレイで円を表示させる

// 中心座標と半径を設定
let coordinate = CLLocationCoordinate2DMake(location.latitude, location.longitude)
let circle = MKCircle(centerCoordinate: coordinate, radius: 200)
mapView.addOverlay(circle)

// MKMapViewDelegate
func mapView(mapView: MKMapView, rendererForOverlay overlay: MKOverlay) -> MKOverlayRenderer {
    let circleRenderer = MKCircleRenderer(overlay: overlay)
    circleRenderer.strokeColor = .redColor()
    circleRenderer.fillColor = .yellowColor()
    circleRenderer.lineWidth = 1.0
    circleRenderer.alpha = 0.2
    return circleRenderer
}

★　現在地にマップ表示を移動

@IBAction func currentLocation(sender: AnyObject) {
    let span = MKCoordinateSpanMake(0.01, 0.01)
    let region = MKCoordinateRegionMake(mapView.userLocation.coordinate, span)
    mapView.setRegion(region, animated: true)
}

★ Pinを落とす Simple

import UIKit
import MapKit

class ViewController: UIViewController, MKMapViewDelegate {
    
    // MapView
    @IBOutlet weak var myMapView: MKMapView!
    
    // Pinをインスタンス変数として定義
    let an = MKPointAnnotation()
    
    // 経度緯度.
    let myLan: CLLocationDegrees = 37.331741
    let myLon: CLLocationDegrees = -122.030333
    
    var center: CLLocationCoordinate2D!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 地図の中心の座標.
        center = CLLocationCoordinate2DMake(myLan, myLon)
        myMapView.centerCoordinate = center

        // 縮尺を指定.
        let mySpan: MKCoordinateSpan = MKCoordinateSpan(latitudeDelta: 0.1, longitudeDelta: 0.1)
        let myRegion: MKCoordinateRegion = MKCoordinateRegion(center: center, span: mySpan)
        
        // regionをmapViewに追加.
        myMapView.region = myRegion
        
        // Pinを作成
        an.title = "title"
        an.coordinate = center
        myMapView.addAnnotation(an)
    }
}