I'm making an app for iOS 13+ devices. My project has both app delegate and scene delegate files. I'm using core location for significant location changes. I was able to detect significant location changes and system waking up my app in simulator using SignificantlyChanged app’s scheme. But when the launch options dictionary has 0 elements and the value for the key UIApplication.LaunchOptionsKey.location is always nil.
Here is my AppDelegate.swift where the system will launch the app in background state when a significant location change is detected and execute the location fetch code. And location manager class. I want to know if the app is launched my the system or if it is launched by the user so I want to check if UIApplication.LaunchOptionsKey.location key has a value. But it is always nil and there is no alternative to it in SceneDelegate. When and how can I find a solution to this long due issue.
import CoreLocation
@main
class AppDelegate: UIResponder, UIApplicationDelegate {
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
// Override point for customization after application launch.
if launchOptions != nil{
if launchOptions![UIApplication.LaunchOptionsKey.location] != nil{
print("Called from background location fetch")
}
}
LocationService.shared.askForPermission()
LocationService.shared.delegate = self
return true
}
// MARK: UISceneSession Lifecycle
func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
// Called when a new scene session is being created.
// Use this method to select a configuration to create the new scene with.
return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
}
func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
// Called when the user discards a scene session.
// If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
// Use this method to release any resources that were specific to the discarded scenes, as they will not return.
}
}
extension AppDelegate: LocationMangerDelegate{
func didFetchLocation(coordinate: CLLocationCoordinate2D) {
print(coordinate)
}
func didFailToFetchLocation(error: Error?, message: String) {
print(message)
}
}```
import Foundation
import CoreLocation
protocol LocationMangerDelegate: AnyObject{
func didFetchLocation(coordinate: CLLocationCoordinate2D)
func didFailToFetchLocation(error: Error?,message: String)
}
class LocationService: NSObject{
private override init() {
}
weak var delegate: LocationMangerDelegate?
static var shared = LocationService()
lazy var locationManager: CLLocationManager = {
var manager = CLLocationManager()
manager.desiredAccuracy = kCLLocationAccuracyBest
manager.allowsBackgroundLocationUpdates = true
manager.pausesLocationUpdatesAutomatically = false
manager.delegate = self
return manager
}()
func askForPermission(){
print("INSIDE")
locationManager.requestWhenInUseAuthorization()
}
func startLocationUpdates(){
self.locationManager.startUpdatingLocation()
}
func stopLocationUpdates(){
self.locationManager.stopUpdatingLocation()
}
}
extension LocationService: CLLocationManagerDelegate{
func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
let status = manager.authorizationStatus
switch status {
case .notDetermined:
self.askForPermission()
case .restricted:
self.delegate?.didFailToFetchLocation(error: nil, message: "Location permission is restricted by the user")
case .denied:
self.delegate?.didFailToFetchLocation(error: nil, message: "Location permission is denied by the user")
case .authorizedWhenInUse:
self.locationManager.requestAlwaysAuthorization()
case .authorizedAlways:
self.locationManager.startMonitoringSignificantLocationChanges()
@unknown default:
break
}
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
if let location = locations.first{
print(location)
self.delegate?.didFetchLocation(coordinate: location.coordinate)
self.stopLocationUpdates()
}
}
func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
print(error)
self.delegate?.didFailToFetchLocation(error: error, message: error.localizedDescription)
}
}
