1. 버튼 추가하기 class ViewController3 : UIViewController { @IBOutlet weak var cameraBtn: UIButton!
override func viewDidLoad() { super.viewDidLoad() cameraBtn.setImage(UIImage(named: "cameraicon.png"), for: .normal) } } 2. 버튼 이벤트 추가하기 @IBAction func imgPickerBtn(_ sender: UIButton) { let alert = UIAlertController(title: "Select one
.", message: nil, preferredStyle: .actionSheet) let library = UIAlertA.....