Ich habe eine Klasse mit dem NamenLocation das enthält mehrere Methoden, die keine Parameter haben.

Wenn ich jedoch versuche, eine Variable mit dem Ergebnis der Methode zu erstellen, möchte sie ein Argument. Warum das

Location class:

let locationManager = CLLocationManager()

public class Location {

    public func coordinate() -> (latitude: Float?, longitude: Float?) {
        let latitude = Float((locationManager.location?.coordinate.latitude)!)
        let longitude = Float((locationManager.location?.coordinate.longitude)!)

        return (latitude: latitude, longitude: longitude)
    }

    public func getCity() -> String {
        var returnCity: String = "N/A"
        let geoCoder = CLGeocoder()
        let location = CLLocation(latitude: (locationManager.location?.coordinate.latitude)!, longitude: (locationManager.location?.coordinate.longitude)!)

        geoCoder.reverseGeocodeLocation(location, completionHandler: { (placemarks, error) -> Void in
            // Place details
            var placeMark: CLPlacemark!
            placeMark = placemarks?[0]
            // City
            if let city = placeMark.addressDictionary!["City"] as? String {
                returnCity = city
            }
        })
        return returnCity
    }

    public func getCountry() -> String {
        var returnCountry: String = "N/A"
        let geoCoder = CLGeocoder()
        let location = CLLocation(latitude: (locationManager.location?.coordinate.latitude)!, longitude: (locationManager.location?.coordinate.longitude)!)

        geoCoder.reverseGeocodeLocation(location, completionHandler: { (placemarks, error) -> Void in
            // Place details
            var placeMark: CLPlacemark!
            placeMark = placemarks?[0]
            // City
            if let country = placeMark.addressDictionary!["Country"] as? String {
                returnCountry = country
            }
        })
        return returnCountry
    }

    public func getZip() -> Int {
        var returnZip: Int = 0
        let geoCoder = CLGeocoder()
        let location = CLLocation(latitude: (locationManager.location?.coordinate.latitude)!, longitude: (locationManager.location?.coordinate.longitude)!)

        geoCoder.reverseGeocodeLocation(location, completionHandler: { (placemarks, error) -> Void in
            // Place details
            var placeMark: CLPlacemark!
            placeMark = placemarks?[0]
            // City
            if let zip = placeMark.addressDictionary!["ZIP"] as? Int {
                returnZip = zip
            }
        })
        return returnZip
    }

    public func getLocationName() -> String {
        var returnName: String = "N/A"
        let geoCoder = CLGeocoder()
        let location = CLLocation(latitude: (locationManager.location?.coordinate.latitude)!, longitude: (locationManager.location?.coordinate.longitude)!)

        geoCoder.reverseGeocodeLocation(location, completionHandler: { (placemarks, error) -> Void in
            // Place details
            var placeMark: CLPlacemark!
            placeMark = placemarks?[0]
            // City
            if let locationName = placeMark.addressDictionary!["Name"] as? String {
                returnName = locationName
            }
        })
        return returnName
    }

    public func getStreetAddress() -> String {
        var returnAddress: String = "N/A"
        let geoCoder = CLGeocoder()
        let location = CLLocation(latitude: (locationManager.location?.coordinate.latitude)!, longitude: (locationManager.location?.coordinate.longitude)!)

        geoCoder.reverseGeocodeLocation(location, completionHandler: { (placemarks, error) -> Void in
            // Place details
            var placeMark: CLPlacemark!
            placeMark = placemarks?[0]
            // City
            if let street = placeMark.addressDictionary!["Thoroughfare"] as? String {
                returnAddress = street
            }
        })
        return returnAddress
    }
}

Versuche eine Variable zu erstellen:

let city = Location.getCity()

Hier sind einige Screenshots von dem, was ich bekomme: