UIViewController life cycle

viewcontroller.swift

import UIKit

class ViewController: UIViewController {

    override func loadView() {
        print("loadView")
    }
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }
    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        print("viewWillAppear")
    }
    
    override func viewWillLayoutSubviews() {
        
    }
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        print("viewDidAppear")
    }

}