How to get Location user with CLLocationManager in swift? - ios

Question

I have this code on my view controller but this not working:
import UIKit
import CoreLocation
class ViewController: UIViewController, CLLocationManagerDelegate {
var location: CLLocationManager!
override func viewDidLoad() {
super.viewDidLoad()
location=CLLocationManager()
location.delegate = self
location.desiredAccuracy=kCLLocationAccuracyBest
location.startUpdatingLocation()
}
func locationManager(location:CLLocationManager, didUpdateLocations locations:AnyObject[]) {
println("locations = \(locations)")
label1.text = "success"
}
I have the permissions how I read in other post. but I don't obtain never, no println..
Thanks!!

Answer 1

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
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)
}
}
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 2

Following are the simple steps for getting user location in Swift 3
1) First add this line in plist file with description
NSLocationWhenInUseUsageDescription
2) Add CoreLocation.framework in your project(Under section Build Phases-> Link Binary With Library)
3) In AppDelegate class
import CoreLocation
4) Create locationManager Object as follows
var locationManager:CLLocationManager!
5) Write following code in didFinishLaunchingWithOptions
locationManager = CLLocationManager()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.distanceFilter = 200
locationManager.requestWhenInUseAuthorization()
locationManager.startUpdatingLocation()
6) Confirm CLLocationManagerDelegate delegate like as follows
class AppDelegate: UIResponder, UIApplicationDelegate, CLLocationManagerDelegate
7) Write CLLocationManagerDelegate delegate method for getting user location
func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
print("location error is = \(error.localizedDescription)")
}
func locationManager(_ manager: CLLocationManager,
didUpdateLocations locations: [CLLocation]) {
let locValue:CLLocationCoordinate2D = (manager.location?.coordinate)!
print("Current Locations = \(locValue.latitude) \(locValue.longitude)")
}

Answer 3

Since you're declaring location as an explicitly unwrapped optional (CLLocationManager!) it requires an initializer, either in an init method as suggested by jhurray, or just inline, as:
var location: CLLocationManager! = nil
Note that you've got other possible problems as well, including that iOS 8 has new requirements for querying the user for permission to use CoreLocation. See this question for more information.

Answer 4

This is the same code as above but cleaned up to work with Swift as of the date of this posting. This worked for me.
Kudos to the original poster.
(note, stick this into whatever class you will use to handle your location stuff.)
var lastLocation = CLLocation()
var locationAuthorizationStatus:CLAuthorizationStatus!
var window: UIWindow?
var locationManager: CLLocationManager!
var seenError : Bool = false
var locationFixAchieved : Bool = false
var locationStatus : NSString = "Not Started"
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)
self.initLocationManager()
}
// Location Manager helper stuff
func initLocationManager() {
seenError = false
locationFixAchieved = false
locationManager = CLLocationManager()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestAlwaysAuthorization()
}
// Location Manager Delegate stuff
func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!) {
locationManager.stopUpdatingLocation()
if ((error) != nil) {
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)
}
}
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 5

Do following stuff in viewcontroller [Using swift] -
class ViewController:
UIViewController,MKMapViewDelegate,CLLocationManagerDelegate {
var locationManager: CLLocationManager?
var usersCurrentLocation:CLLocationCoordinate2D?
override func viewDidLoad() {
super.viewDidLoad()
self.locationManager = CLLocationManager()
if CLLocationManager.authorizationStatus() == .NotDetermined{
locationManager?.requestAlwaysAuthorization()
}
locationManager?.desiredAccuracy = kCLLocationAccuracyBest
locationManager?.distanceFilter = 200
locationManager?.delegate = self
startUpdatingLocation()
usersCurrentLocation = CLLocationCoordinate2DMake(LATTITUDE, LONGITUDE)
let span = MKCoordinateSpanMake(0.005, 0.005)
let region = MKCoordinateRegionMake(usersCurrentLocation!, span)
mapview.setRegion(region, animated: true)
mapview.delegate = self
mapview.showsUserLocation = true
}
//MARK: CLLocationManagerDelegate methods
func startUpdatingLocation() {
self.locationManager?.startUpdatingLocation()
}
func stopUpdatingLocation() {
self.locationManager?.stopUpdatingLocation()
}
// MARK: MKMapViewDelegate
func mapView(mapView: MKMapView, didUpdateUserLocation userLocation: MKUserLocation){
mapview.centerCoordinate = userLocation.location!.coordinate
mapview.showsUserLocation = true
regionWithGeofencing()
}

Answer 6

You need to have init functions.
Override init(coder:) and init(nibName: bundle:) and add any custom init you want.
Because you have said that location is not optional, you must initialize it before your super init calls in ALL of your init functions.
func init() {
...
location = CLLocationManager()
// either set delegate and other stuff here or in viewDidLoad
super.init(nibName:nil, bundle:nil)
// other initialization below
}

Answer 7

It should be written as
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {