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 update the location of the user  like in the Apple Map app    I tried this  but nothing happened   import MapKit import CoreLocation  class MapView   UIViewController  CLLocationManagerDelegate         IBOutlet weak var map  MKMapView      var locationManager  CLLocationManager       override func viewDidLoad             super viewDidLoad            if  CLLocationManager locationServicesEnabled                          locationManager   CLLocationManager               locationManager delegate   self             locationManager desiredAccuracy   kCLLocationAccuracyBest             locationManager requestAlwaysAuthorization               locationManager startUpdatingLocation                       Could you please help me

User · Answer

For swift 3 and XCode 8 I find this answer:

First, you need set privacy into info.plist. Insert string NSLocationWhenInUseUsageDescription with your description why you want get user location. For example, set string "For map in application".

Second, use this code example

@IBOutlet weak var mapView: MKMapView!

private var locationManager: CLLocationManager!
private var currentLocation: CLLocation?

override func viewDidLoad() {
    super.viewDidLoad()

    mapView.delegate = self

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

    // Check for Location Services

    if CLLocationManager.locationServicesEnabled() {
        locationManager.requestWhenInUseAuthorization()
        locationManager.startUpdatingLocation()
    }
}

// MARK - CLLocationManagerDelegate

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    defer { currentLocation = locations.last }

    if currentLocation == nil {
        // Zoom to user location
        if let userLocation = locations.last {
            let viewRegion = MKCoordinateRegionMakeWithDistance(userLocation.coordinate, 2000, 2000)
            mapView.setRegion(viewRegion, animated: false)
        }
    }
}

Third, set User Location flag in storyboard for mapView.

User · Answer

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

User · Answer

100  working  easy steps and tested  Import libraries   import MapKit import CoreLocation   set delegates   CLLocationManagerDelegate MKMapViewDelegate   Take variable   let locationManager   CLLocationManager     write this code on viewDidLoad     self locationManager requestAlwaysAuthorization           For use in foreground     self locationManager requestWhenInUseAuthorization        if CLLocationManager locationServicesEnabled             locationManager delegate   self         locationManager desiredAccuracy   kCLLocationAccuracyBest         locationManager startUpdatingLocation              mapView delegate   self     mapView mapType    standard     mapView isZoomEnabled   true     mapView isScrollEnabled   true      if let coor   mapView userLocation location  coordinate          mapView setCenter coor  animated  true          Write delegate method for location   func locationManager   manager  CLLocationManager  didUpdateLocations locations   CLLocation         let locValue CLLocationCoordinate2D   manager location  coordinate      mapView mapType   MKMapType standard      let span   MKCoordinateSpanMake 0 05  0 05      let region   MKCoordinateRegion center  locValue  span  span      mapView setRegion region  animated  true       let annotation   MKPointAnnotation       annotation coordinate   locValue     annotation title    Javed Multani      annotation subtitle    current location      mapView addAnnotation annotation         centerMap locValue      Do not forgot to set permission in info plist   lt key gt NSLocationWhenInUseUsageDescription lt  key gt   lt string gt This application requires location services to work lt  string gt    lt key gt NSLocationAlwaysUsageDescription lt  key gt   lt string gt This application requires location services to work lt  string gt    It s look like

User · Answer

You have to override CLLocationManager didUpdateLocations  part of CLLocationManagerDelegate  to get notified when the location manager retrieves the current location   func locationManager   manager  CLLocationManager  didUpdateLocations locations   CLLocation         if 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            NOTE  If your target is iOS 8 or above  you must include the NSLocationAlwaysUsageDescription or NSLocationWhenInUseUsageDescription key in your Info plist to get the location services to work

User · Answer

Swift 5 1 Get Current Location and Set on MKMapView Import libraries  import MapKit import CoreLocation  set delegates  CLLocationManagerDelegate   MKMapViewDelegate  Declare variable  let locationManager   CLLocationManager    Write this code on viewDidLoad    self locationManager requestAlwaysAuthorization   self locationManager requestWhenInUseAuthorization    if CLLocationManager locationServicesEnabled         locationManager delegate   self     locationManager desiredAccuracy   kCLLocationAccuracyBest     locationManager startUpdatingLocation     mapView delegate   self mapView mapType    standard mapView isZoomEnabled   true mapView isScrollEnabled   true  if let coor   mapView userLocation location  coordinate      mapView setCenter coor  animated  true     Write delegate method for location  func locationManager   manager  CLLocationManager  didUpdateLocations      locations   CLLocation         let locValue CLLocationCoordinate2D   manager location  coordinate      mapView mapType   MKMapType standard      let span   MKCoordinateSpan latitudeDelta  0 05  longitudeDelta  0 05      let region   MKCoordinateRegion center  locValue  span  span      mapView setRegion region  animated  true       let annotation   MKPointAnnotation       annotation coordinate   locValue     annotation title    quot You are Here quot      mapView addAnnotation annotation     Set permission in info plist    lt key gt NSLocationWhenInUseUsageDescription lt  key gt   lt string gt This application requires location services to work lt  string gt    lt key gt NSLocationAlwaysUsageDescription lt  key gt   lt string gt This application requires location services to work lt  string gt

User · Answer

You just need to set the userTrackingMode of the MKMapView  If you only want to display and track the user location and implement the same behaviour as the Apple Maps app uses  there is no reason for writing additional code   mapView userTrackingMode    follow   See more at https   developer apple com documentation mapkit mkmapview 1616208-usertrackingmode

User · Answer

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

User · Answer

MyLocation  is a Swift iOS Demo   You can use this demo for the following    Show the current location  Choose other location  in this case stop tracking the location  Add a push pin to a MKMapView iOS  when touching

User · Answer

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

User · Answer

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

[ios] Show Current Location and Update Location in MKMapView in Swift

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