Show Current Location and Update Location in MKMapView in Swift

Question

I am learning how to use the new Swift language (only Swift, no Objective-C). To do it, I want to do a simple view with a map (MKMapView). I want to find and up

Answer 1

For Swift 2, you should change it to the following:

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

    let center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude, longitude: location!.coordinate.longitude)
    let region = MKCoordinateRegion(center: center, span: MKCoordinateSpan(latitudeDelta: 0.01, longitudeDelta: 0.01))

    self.map.setRegion(region, animated: true)
}

Answer 2

Hi Sometimes setting the showsUserLocation in code doesn't work for some weird reason.

So try a combination of the following.

In viewDidLoad()

  self.mapView.showsUserLocation = true

Go to your storyboard in Xcode, on the right panel's attribute inspector tick the User location check box, like in the attached image. run your app and you should be able to see the User location

Answer 3

In Swift 4, I had used the locationManager delegate function as defined above ..

func locationManager(manager: CLLocationManager!, 
    didUpdateLocations locations: [AnyObject]!) {

.. but this needed to be changed to ..

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

This came from .. https://github.com/lotfyahmed/MyLocation/blob/master/MyLocation/ViewController.swift - thanks!

Answer 4

you have to override CLLocationManager.didUpdateLocations

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

    let userLocation:CLLocation = locations[0] as CLLocation
    locationManager.stopUpdatingLocation()

    let location = CLLocationCoordinate2D(latitude: userLocation.coordinate.latitude, longitude: userLocation.coordinate.longitude)

    let span = MKCoordinateSpanMake(0.5, 0.5)

    let region = MKCoordinateRegion (center:  location,span: span)

    mapView.setRegion(region, animated: true)
}

you also have to add NSLocationWhenInUseUsageDescription and NSLocationAlwaysUsageDescription to your plist setting Result as value