iOS UIKit 아이폰 앱 개발 No.1

//
//  ViewController.swift
//  JoonhoiOS
//
//  Created by jysoft on 2023/03/29.
//

import UIKit

class ViewController: UIViewController {
    //title
    var titleLable : UILabel = {
       let label = UILabel()
        label.text = "Hellow world ! "
        label.textAlignment = .center
        label.font = UIFont.boldSystemFont(ofSize: 50)
        label.textColor = .white
        return label
    }()

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.
        view.backgroundColor = .red
        // 추가적으로 만든 뷰를 넣는다 . 빌드업
        view.addSubview(titleLable)
        // 화면 센터 위 아래
        titleLable.translatesAutoresizingMaskIntoConstraints = false
        titleLable.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
        titleLable.centerYAnchor.constraint(equalTo: view.centerYAnchor).isActive = true
        
    }


}