# [HowTo] CoreLocation Basic Setting
The location manager calls its delegate’s methods to report location-related events to your app. Implement this protocol in an app-specific object and use the methods to update the app. For example, you might use the current location to update the user’s position on a map or you might return search results relevant only to the user’s current location.
//ViewController
import CoreLocation
...
//MARK: - Properties
private lazy var locationManager: CLLocationManager = {
let manager = CLLocationManager()
manager.delegate = self
return manager
}()
...
//MARK: - Selectors
@objc func locationTapped() {
switch CLLocationManager.authorizationStatus() {
case .authorizedAlways, .authorizedWhenInUse:
locationManager.requestLocation()
case .notDetermined:
locationManager.requestWhenInUseAuthorization()
default:
promptForLocationPermission()
}
}
//MARK: - Helpers
private func promptForLocationPermission() {
let alertController = UIAlertController(title: "Requires Location Permission", message: "Would you like to enable location permission in Settings?", preferredStyle: .alert)
let enableAction = UIAlertAction(title: "Go to Settings", style: .default) { _ in
guard let settingsURL = URL(string: UIApplication.openSettingsURLString) else { return }
UIApplication.shared.open(settingsURL, options: [:], completionHandler: nil)
}
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)
alertController.addAction(enableAction)
alertController.addAction(cancelAction)
self.present(alertController, animated: true, completion: nil)
}
private func fetchWeather(byLocation location: CLLocation) {
let lat = location.coordinate.latitude
let lon = location.coordinate.longitude
weatherManager.fetchWeather(lat: lat, lon: lon) { [weak self] result in
guard let self = self else { return }
self.handleResult(result)
}
}
private func handleResult(_ result: Result<WeatherModel, Error>) {
switch result {
case .success(let model):
updateView(with: model)
case .failure(let error):
print(error.localizedDescription)
}
}
...
//MARK: - CLLocationManagerDelegate
extension ViewController: CLLocationManagerDelegate {
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
if let location = locations.last {
manager.stopUpdatingLocation()
fetchWeather(byLocation: location)
}
}
func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
print(error.localizedDescription)
}
}
# Info.plist
Privacy - Location When In Use Usage Description
