Getting exact location in swift iOS - ios

Question

I have written Swift code for current location but the code isn't giving me the exact location as Android use to locate.
For me it just give me the Country location pointing but I need the exact location for my application.
Here is my code for location
import UIKit
import MapKit
import CoreLocation
class location: UIViewController , CLLocationManagerDelegate {
#IBOutlet weak var map: MKMapView!
var locationManager: CLLocationManager!
var address : String = ""
override func viewDidLoad() {
super.viewDidLoad()
//let dataProvider = GoogleDataProvider(
if (CLLocationManager.locationServicesEnabled())
{
locationManager = CLLocationManager()
locationManager.delegate = self
locationManager.desiredAccuracy = kCLLocationAccuracyBest
locationManager.requestWhenInUseAuthorization()
locationManager.startUpdatingLocation()
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
var start : CLLocation!
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
start = locations.last
let center = CLLocationCoordinate2D(latitude: start!.coordinate.latitude, longitude: start!.coordinate.longitude)
let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01))
self.map.setRegion(region, animated: true)
print("function called")
let annotation = MKPointAnnotation()
annotation.coordinate = center
annotation.title = "You are Here :)"
map.addAnnotation(annotation)
let geocoder = CLGeocoder()
geocoder.reverseGeocodeLocation(manager.location!, completionHandler: {
placemarks, error in
if (error != nil)
{
print("Reverse geocoder failed with error" + error!.localizedDescription)
return
}
if let pm = placemarks?.first {
self.displayLocationInfo(pm)
}
else
{
print("Problem with the data received from geocoder")
}
})
}
}