locate user location in Swift - ios

Question

I try to add Current Location in to the map by using CLLocationmanager, but when I try to call the func mapView.StartUpdateLocation some how the delegate protocol " didUpdateLocation " is not to be called, any know how can I fix this ? Thanks
import UIKit
import MapKit
class mapViewController: UIViewController, CLLocationManagerDelegate, MKMapViewDelegate {
#IBOutlet var mapView: MKMapView!
var restaurant:Restaurant!
var locationManager = CLLocationManager()
var current: CLPlacemark!
override func viewDidLoad()
{
super.viewDidLoad()
mapView.delegate = self
self.locationManager.requestAlwaysAuthorization()
// convert address to coordinate
let geoCoder = CLGeocoder()
geoCoder.geocodeAddressString(restaurant.location, completionHandler: { (placemarks, error) -> Void in
if error != nil
{
print(error)
return
}
if placemarks.count > 0
{
let placemark = placemarks[0] as CLPlacemark
// add annotation
let annotation = MKPointAnnotation()
annotation.coordinate = placemark.location.coordinate
annotation.title = self.restaurant.name
annotation.subtitle = self.restaurant.type
self.mapView.showAnnotations([annotation], animated: true)
self.mapView.selectAnnotation(annotation, animated: true)
self.mapView.showsUserLocation = true // add to show user location
}
})
}
override func didReceiveMemoryWarning()
{
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func currentLocation(sender: AnyObject)
{
if ( CLLocationManager.locationServicesEnabled())
{
println("Location service is on ")
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.stopUpdatingLocation()
locationManager.startUpdatingLocation()
}else
{
println("Location service is not on ")
}
}
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!)
{
CLGeocoder().reverseGeocodeLocation(manager.location, completionHandler: { (placemarks, error) -> Void in
if error != nil
{
print("error")
}
if placemarks.count > 0
{
self.current = placemarks[0] as CLPlacemark
let annotation = MKPointAnnotation()
annotation.coordinate = self.current.location.coordinate
self.mapView.showAnnotations([annotation], animated: true)
self.mapView.selectAnnotation(annotation, animated: true)
}
else
{
print("I dont know what the fuck is the error")
}
})
}
func locationManager(manager: CLLocationManager!, didFailWithError error: NSError!) {
println(error.localizedDescription)
}
func mapView(mapView: MKMapView!, viewForAnnotation annotation: MKAnnotation!) -> MKAnnotationView!
{
let indentifier = "My Pin"
if annotation.isKindOfClass(MKUserLocation){ return nil }
// Resuse Annotation if possiable
var annotationView = mapView.dequeueReusableAnnotationViewWithIdentifier(indentifier)
if annotationView == nil
{
annotationView = MKAnnotationView(annotation: annotation, reuseIdentifier: indentifier)
annotationView.canShowCallout = true // tell annotation can display
}
let iconImageView = UIImageView(frame: CGRect(x: 0, y: 0, width: 53, height: 53)) // create left icon image for annotation view
iconImageView.image = UIImage(named: restaurant.image)
annotationView.leftCalloutAccessoryView = iconImageView
return annotationView
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}

Answer 1

There is a change between iOS7 & 8 about GPS localisation. Please read this article.
http://matthewfecher.com/app-developement/getting-gps-location-using-core-location-in-ios-8-vs-ios-7/
Maybe you have not added these infos to your .plist
<key>NSLocationAlwaysUsageDescription</key>
<string>Your message goes here</string>
<key>NSLocationWhenInUseUsageDescription</key>
<string>Your message goes here</string>

Answer 2

Please check once below keys entered in info.plist
NSLocationWhenInUseUsageDescription
NSLocationAlwaysUsageDescription
and set
var _locationManager = CLLocationManager()
_locationManager.delegate = self
_locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
_locationManager.requestAlwaysAuthorization()
in viewDidLoad()