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

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 = "You are Here"
    mapView.addAnnotation(annotation)
}

Set permission in info.plist *

NSLocationWhenInUseUsageDescription
This application requires location services to work

NSLocationAlwaysUsageDescription
This application requires location services to work