iOS Programming: The Big Nerd Ranch Guide, 7th Edition

Creating a View Programmatically

You learned in Chapter 4 that you create a view controller’s view programmatically by overriding the UIViewController method loadView().

Open MapViewController.swift and override loadView() to create an instance of MKMapView and set it as the view of the view controller. You will need a reference to the map view later on, so create a property for it as well.

Listing 5.1  Creating a map view programmatically (MapViewController.swift)

import UIKit
import MapKit

class MapViewController: UIViewController {

    var mapView: MKMapView!

    override func loadView() {
        // Create a map view
        mapView = MKMapView()

        // Set it as *the* view of this view controller
        view = mapView
    } override func viewDidLoad() { super.viewDidLoad() ...