CLLocation Manager in Swift to get Location of User

Question

I am trying to convert an old app in ObjC to Swift as a practice exercise and have ran in to some issues. The way I had it in the old app, it was establishing the CLLocatio

Answer 1

For Swift 3

import UIKit
import CoreLocation

class ViewController: UIViewController,CLLocationManagerDelegate {


    var locationManager:CLLocationManager!

    override func viewDidLoad() {
        super.viewDidLoad()

        locationManager = CLLocationManager()
        locationManager.delegate = self
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        locationManager.requestAlwaysAuthorization()
        locationManager.startUpdatingLocation()

        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }

    func locationManager(_ manager:CLLocationManager, didUpdateLocations locations: [CLLocation]) {
        print("locations = \(locations)")
    }


}

Answer 2

Just call the init(vc : UIViewController).

    import Foundation
    import CoreLocation
    import UIKit


    class LocManager : NSObject{


        var permission : ((Bool?)->())?

        private var locationManager : CLLocationManager!

        init(_ vc : UIViewController) {
            super.init()
            self.locationManager = CLLocationManager()
            self.locationManager.delegate = vc as? CLLocationManagerDelegate
            setUpLocationManagerDelegate()
        }


    }

    extension LocManager : CLLocationManagerDelegate {

        fileprivate func setUpLocationManagerDelegate(){
               locationManager = CLLocationManager()
               locationManager.delegate = self
               locationManager.desiredAccuracy = kCLLocationAccuracyBest
               locationManager.requestAlwaysAuthorization()
           }

        func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {

            if let lat  = locations.last?.coordinate.latitude, let long = locations.last?.coordinate.longitude{
                print("\n\nThe current Lat/Long Is Here\n\n")
                let coordinates = CLLocationCoordinate2D(latitude: lat, longitude: long)

            }else{
                print("Unable To Access Locaion")
            }
        }

        func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {

            switch status {
            case .authorizedAlways,.authorizedWhenInUse:
                print("Good to go and use location")
                locationManager.startUpdatingLocation()
                self.callPermisssionCompletion(val: true)

            case .denied:
                print("DENIED to go and use location")
                self.callPermisssionCompletion(val: false)

            case .restricted:
                print("DENIED to go and use location")
                self.callPermisssionCompletion(val: nil)

            case .notDetermined:
                print("DENIED to go and use location")
                self.callPermisssionCompletion(val: nil)

            default:
                print("Unable to read location :\(status)")
            }
        }


        fileprivate func callPermisssionCompletion(val : Bool?){

            guard let comp = self.permission else {
                print("\n\n Unable to  locate completions \n\n")
                return
            }
            if let val =  val{
                comp(val)
            }

        }


    }

Answer 3

First add this two line in plist file

1. NSLocationWhenInUseUsageDescription

2. NSLocationAlwaysUsageDescription

Then this is class working complete implement this

import UIKit

import CoreLocation

@UIApplicationMain

class AppDelegate: UIResponder, UIApplicationDelegate, CLLocationManagerDelegate {

var window: UIWindow?
var locationManager: CLLocationManager!
var seenError : Bool = false
var locationFixAchieved : Bool = false
var locationStatus : NSString = "Not Started"

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
    initLocationManager();
    return true
}

// Location Manager helper stuff
func initLocationManager() {
    seenError = false
    locationFixAchieved = false
    locationManager = CLLocationManager()
    locationManager.delegate = self
    locationManager.locationServicesEnabled
    locationManager.desiredAccuracy = kCLLocationAccuracyBest

    locationManager.requestAlwaysAuthorization()
}

// Location Manager Delegate stuff
// If failed
func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!) {
    locationManager.stopUpdatingLocation()
    if (error) {
        if (seenError == false) {
            seenError = true
           print(error)
        }
    }
}

func locationManager(manager: CLLocationManager!, didUpdateLocations locations: AnyObject[]!) {
    if (locationFixAchieved == false) {
        locationFixAchieved = true
        var locationArray = locations as NSArray
        var locationObj = locationArray.lastObject as CLLocation
        var coord = locationObj.coordinate

        println(coord.latitude)
        println(coord.longitude)
    }
}

// authorization status
func locationManager(manager: CLLocationManager!,
    didChangeAuthorizationStatus status: CLAuthorizationStatus) {
        var shouldIAllow = false

        switch status {
        case CLAuthorizationStatus.Restricted:
            locationStatus = "Restricted Access to location"
        case CLAuthorizationStatus.Denied:
            locationStatus = "User denied access to location"
        case CLAuthorizationStatus.NotDetermined:
            locationStatus = "Status not determined"
        default:
            locationStatus = "Allowed to location Access"
            shouldIAllow = true
        }
        NSNotificationCenter.defaultCenter().postNotificationName("LabelHasbeenUpdated", object: nil)
        if (shouldIAllow == true) {
            NSLog("Location to Allowed")
            // Start location services
            locationManager.startUpdatingLocation()
        } else {
            NSLog("Denied access: \(locationStatus)")
        }
}
}

Answer 4

had the same issue. didUpdateLocations - was not working. Run your app. Go to the Settings page -> Privacy -> Location and turn off Location Services. didFailWithError will catch the error about absent Location Services. Then turn it on. Since that moment didUpdateLocations will catch locations.

Answer 5

Add bellow 2 property in info.plist

NSLocationWhenInUseUsageDescription : Location information is used for fraud prevention

Privacy - Location Usage Description : Location information is used for fraud prevention

Answer 6

If you want to get the user location updated by default, without clicking 'Simulate location' everytime, go to

YourProject-->Build Phases-->Link Binary with libraries-->Add corelocation.framework

The location gets updated automatically/by default when you run the app in the simulator. Tested and works in Swift 2 !