💬

SwiftUIで位置情報をコンソールに出力する

2021/02/11に公開

Swift

SwiftUI

tech

iPhoneアプリ開発初心者です。
Swift UIのサンプルコードが少なかったので、メモ程度に。GitHubにもあとで公開します。

TL;DR;

CoreLocationを追加
info.plistにPrivacyを設定
UIApplicationDelegateAdaptorを設定

環境

Mac OS X 10.15.7
Xcode 12.3

CoreLocationを追加

Targets > Build Phases > Link Binaries with LibrariesにCoreLocationを追加する。

参考

info.plistにPrivacyを設定

アプリ起動時に位置情報を使用してよいか尋ねるようになる。

UIApplicationDelegateAdaptorを設定

GPSSampleApp.swiftにUIApplicationDelegateAdaptorを設定。

import SwiftUI
import CoreLocation

@main
struct GPSSampleApp: App {
    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate
    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

class AppDelegate: UIResponder, UIApplicationDelegate, CLLocationManagerDelegate {
    var locationManager : CLLocationManager?
    
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
        
        locationManager = CLLocationManager()
        locationManager!.delegate = self
        
        locationManager!.requestWhenInUseAuthorization()

        if CLLocationManager.locationServicesEnabled() {
            locationManager!.desiredAccuracy = kCLLocationAccuracyBest
            locationManager!.distanceFilter = 10
            locationManager!.activityType = .fitness
            locationManager!.startUpdatingLocation()
        }
        
        return true
    }
    
    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        guard let newLocation = locations.last else {
            return
        }
        
        let location:CLLocationCoordinate2D = CLLocationCoordinate2DMake(newLocation.coordinate.latitude, newLocation.coordinate.longitude)
        
        print("緯度: ", location.latitude, "経度: ", location.longitude)

    }
    
}

参考