Can you explain what loadView is and how it is used in development?

loadView is a method in iOS development responsible for creating and configuring the root view of a controller.

When a UIViewController loads, the system calls loadView to obtain the main view that will be displayed. By default, this method loads the view from a storyboard or nib file. If you override loadView, you should create and assign your own view to the view property.

Example of using loadView:

override func loadView() {
    let customView = UIView()
    customView.backgroundColor = .white
    self.view = customView
}

This is useful when you want to create an interface programmatically without using a storyboard. It is important to remember to assign the view property, otherwise the application will crash.