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Best approach to share changes between classes

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Hi!,

Background I have a view (HomeView) where I want to show in a List only the elements that are nearby user location. On the other hand, I have another class to manage the location authorization and the location request (LocationManager). Finally, at HomeView, I create an instance of LocationManager class so the system requests location authorization to the user and perform the location request.

In your opinion, what would be the best approach from HomeView ViewModel class to be aware when the location data is ready in order to start collecting the List elements? Should I use the observer pattern? Is there an easier way?

LocationManager class:

class LocationManager: NSObject, CLLocationManagerDelegate {
    var locationManager = CLLocationManager()

    override init() {
        super.init()
        locationManager.delegate = self
        locationManager.distanceFilter = 10000
        locationManager.desiredAccuracy = kCLLocationAccuracyThreeKilometers
        locationManager.activityType = .other
    }

    func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
        switch manager.authorizationStatus {
        case .notDetermined:
            manager.requestWhenInUseAuthorization()
        case .restricted, .denied:
            ....
            break
        case .authorizedWhenInUse:
            manager.requestLocation()
            break
        default:
            break
        }
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        print("Location: \(locations.first)")
        // How HomeView should be informed at this point that the location data is ready? <---------------
    }

    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        print("Failed \(error)")
    }
}

Thanks!

3      

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