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iOS

Alex Yakir
Alex Yakir
5,425 Points
Posted by Alex Yakir
Alex Yakir
5,425 Points

Getting the current location in "Stormy" app

Hey guys, Im trying to implement a current location function in the "Coordinate.swift" of the "Stormy" app.

However I don't want to have to initialize the Coordinate class with "fake" coordinates before I call the getCurrentLocation() function.

Any Idea how to accomplish this?

The class looks like this: 

import Foundation
import CoreLocation

class Coordinate: NSObject, CLLocationManagerDelegate{

    var latitude: Double
    var longitude : Double 

    init(latitude: Double, longitude : Double) {
        self.latitude = latitude
        self.longitude = longitude
    }



    func getCurrentLocation(){
        let locManager = CLLocationManager()
        locManager.delegate = self
        var currentLocation = CLLocation()

        if( CLLocationManager.authorizationStatus() == CLAuthorizationStatus.authorizedWhenInUse ||
            CLLocationManager.authorizationStatus() == CLAuthorizationStatus.authorizedAlways){
            currentLocation = locManager.location!
        }

        self.latitude = currentLocation.coordinate.latitude
        self.longitude = currentLocation.coordinate.longitude

    }

}

extension Coordinate{
    override var description: String {
        return "\(latitude),\(longitude)"
    }
}

I don't want to do this:

let coordinate = Coordinate(latitude: 00.0, longitude: 00.0)
coordinate.getCurrentLocation()

2 Answers

Joe Mayfield
Joe Mayfield
10,409 Points
Joe Mayfield
Joe Mayfield
10,409 Points

I've done a tutorial where you create a weather app with location services and I think I had to tell the simulator to use locations that I provided. I went through the simulator and setup some but it gives you apple HQ standard.

Caleb Kleveter
MOD
Caleb Kleveter
Treehouse Moderator 37,862 Points
Caleb Kleveter
Caleb Kleveter
Treehouse Moderator 37,862 Points

I would create a different model that would handle the fetching of the location that uses delegation to pass on a Coordinate object that it creates when a new location is detected.

import Foundation
import CoreLocation

protocol LocationManagerDelegate: class {

    // Passing in a coordinate to the delegate method
    func locationDidUpdate(with location: Coordinate)
}

class LocationManager: NSObject {
    let locationManager = CLLocationManager()
    weak var delegate: LocationManagerDelegate?

    override init() {
        super.init()
        self.locationManager.delegate = self
        self.locationManager.desiredAccuracy = kCLLocationAccuracyThreeKilometers
        self.locationManager.requestLocation()
    }

    func getUserPermission() {
        if CLLocationManager.authorizationStatus() == .notDetermined || CLLocationManager.authorizationStatus() == .denied {
            locationManager.requestWhenInUseAuthorization()
        }
    }
}

extension LocationManager: CLLocationManagerDelegate {

    func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
        if status == .authorizedAlways {
            manager.requestLocation()
        }
    }

    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        if let location = locations.first {

            // Create the coordinate from the location
            let coordinate = Coordinate(latitude: location.coordinate.latitude, longitude: location.coordinate.longitude)

            // Pass the coordinate into the delegate method
            self.delegate?.locationDidUpdate(with: coordinate)
        }
    }

    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
        print(error.localizedDescription)
    }
}

Conforming to the LocationManagerDelegate:

class VIEW-CONTROLLER {
    let locationManager = LocationManager()
    // Other properties...

    override viewDidLoad() {
        super.viewDidLoad()
        locationManager.delegate = self
    }

    // Other methods...
}

extension VIEW-CONTROLLER: LocationManagerDelegate {
    func locationDidUpdate(with location: Coordinate) {
        // Use the coordinate you fetched.
    }
}