iOS13以降の位置情報許可サンプルコード

LocationSampleViewController.swift

//
//  ViewController.swift
//  LocationSample
//

import CoreLocation
import UIKit

class ViewController: UIViewController {

    private let locationManager = CLLocationManager()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        locationManager.delegate = self
        
        print("CLLocationManager.authorizationStatus=\(CLLocationManager.authorizationStatus().description)")
    }
    
    // Storyboard 上に適当にボタン二つ用意して紐づけて下さい
    @IBAction func onRequestAlways(_ sender: Any) {
        locationManager.requestAlwaysAuthorization()
    }
    
    
    @IBAction func onRequestWhenInUse(_ sender: Any) {
        locationManager.requestWhenInUseAuthorization()
    }
}

extension ViewController: CLLocationManagerDelegate {
    // 位置情報の許可のステータス変更で呼ばれる
    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
        print("didChangeAuthorization status=\(status.description)")
        switch status {
        case .authorizedAlways:
            manager.requestLocation()
            break
        case .authorizedWhenInUse:
            manager.requestAlwaysAuthorization()
            break
        case .notDetermined:
            break
        case .restricted:
            break
        case .denied:
            break
        default:
            break
        }
    }
    
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        print("didUpdateLocations locations=\(locations)")
    }
    
    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        print("didFailWithError error=\(error.localizedDescription)")
    }
}

extension CLAuthorizationStatus {
    var description: String {
        switch self {
        case .notDetermined:
            return "未選択"
        case .restricted:
            return "ペアレンタルコントロールなどの影響で制限中"
        case .denied:
            return "利用拒否"
        case .authorizedAlways:
            return "常に利用許可"
        case .authorizedWhenInUse:
            return "使用中のみ利用許可"
        default:
            return ""
        }
    }
}