How to configure map display on the view?

You can configure map display on an iOS view using the MapKit framework.

1. Add an MKMapView to the view (either in Interface Builder or programmatically).
2. Set the view controller class to conform to the MKMapViewDelegate protocol.
3. Set the delegate property of MKMapView to the current view controller.
4. Request permission to access the user's location (if you need to show it on the map). This requires the NSLocationWhenInUseUsageDescription or NSLocationAlwaysAndWhenInUseUsageDescription keys in Info.plist. Use CLLocationManager.
5. Configure the map region (MKCoordinateRegion) to define the displayed area (center and radius).
6. Optionally, add annotations (MKPointAnnotation, custom annotations), overlays (MKPolyline, MKCircle) to display additional information.

Example of programmatically creating and adding a map:

import MapKit
import UIKit

class MapViewController: UIViewController, MKMapViewDelegate {

    private let mapView: MKMapView = {
        let map = MKMapView()
        map.translatesAutoresizingMaskIntoConstraints = false
        return map
    }()

    override func viewDidLoad() {
        super.viewDidLoad()
        setupMapView()
        configureMapRegion()
    }

    private func setupMapView() {
        view.addSubview(mapView)
        NSLayoutConstraint.activate([
            mapView.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
            mapView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
            mapView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
            mapView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
        ])
        mapView.delegate = self
    }

    private func configureMapRegion() {
        // Example: setting region to London center
        let coordinate = CLLocationCoordinate2D(latitude: 51.5074, longitude: 0.1278)
        let span = MKCoordinateSpan(latitudeDelta: 0.05, longitudeDelta: 0.05)
        let region = MKCoordinateRegion(center: coordinate, span: span)
        mapView.setRegion(region, animated: true)
    }

    // MARK: - MKMapViewDelegate Methods (optional)

    func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
        // Customizing annotation views
        guard !(annotation is MKUserLocation) else { return nil }
        let reuseIdentifier = "customAnnotation"
        var annotationView = mapView.dequeueReusableAnnotationView(withIdentifier: reuseIdentifier) as? MKMarkerAnnotationView

        if annotationView == nil {
            annotationView = MKMarkerAnnotationView(annotation: annotation, reuseIdentifier: reuseIdentifier)
            annotationView?.canShowCallout = true
            annotationView?.rightCalloutAccessoryView = UIButton(type: .detailDisclosure)
        } else {
            annotationView?.annotation = annotation
        }
        return annotationView
    }
}

Main properties of MKMapView:

Property	Description
delegate	Delegate for handling map events.
region	The displayed map region.
centerCoordinate	Coordinates of the map center.
mapType	Map type (standard, satellite, hybrid).
showsUserLocation	Whether to show the user's current location.
userTrackingMode	Mode for tracking user location.
annotations	Array of annotations on the map.
overlays	Array of overlays on the map.