location-maps

地图与位置服务

CoreLocation

CLLocationManager 配置

import CoreLocation

final class LocationManager: NSObject, CLLocationManagerDelegate {
    static let shared = LocationManager()

    private let manager = CLLocationManager()
    private var completion: ((Result<CLLocation, Error>) -> Void)?

    private override init() {
        super.init()
        manager.delegate = self
        manager.desiredAccuracy = kCLLocationAccuracyHundredMeters
        manager.distanceFilter = 100
    }

    func requestLocation() async throws -> CLLocation {
        try await withCheckedThrowingContinuation { continuation in
            self.completion = { result in
                switch result {
                case .success(let location):
                    continuation.resume(returning: location)
                case .failure(let error):
                    continuation.resume(throwing: error)
                }
            }
            manager.requestLocation()
        }
    }

    func startUpdating() {
        manager.startUpdatingLocation()
    }

    func stopUpdating() {
        manager.stopUpdatingLocation()
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        guard let location = locations.last else { return }
        completion?(.success(location))
        completion = nil
    }

    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        completion?(.failure(error))
        completion = nil
    }
}

精度选择

原则：用能满足需求的最低精度

权限处理

func requestLocationPermission() {
    let status = manager.authorizationStatus
    switch status {
    case .notDetermined:
        manager.requestWhenInUseAuthorization()
    case .authorizedWhenInUse:
        if requiresAlways {
            manager.requestAlwaysAuthorization()
        } else {
            startUpdating()
        }
    case .authorizedAlways:
        startUpdating()
    case .denied, .restricted:
        showLocationDeniedAlert()
    @unknown default:
        break
    }
}