시작하기

화면 이미지

출처

import UIKit

//変数
var msgDialog01: MessageDialog?

class ViewController: UIViewController{

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view.

        //ダイアログ準備
        msgDialog01 = MessageDialog(self.view, true)
        msgDialog01?.prepare("よろしいですか？", execFunc)

        //実行
        msgDialog01?.show()

    }

    func execFunc(){
        print("execFunc.")
    }
}


//画面表示用ダイアログクラス
public class MessageDialog{

    //操作無効用の半透明フィルム
    private let vwFilm = UIView()

    //ダイアログ
    private let vwDialog = UIView.init(frame: CGRect.init(x: 0, y: 0, width: 300, height: 300))

    //メッセージ
    private let lblMsg = UILabel.init(frame: CGRect.init(x: 20, y: 20, width: 260, height: 200))

    //キャンセルボタン
    private let btnCancel = UIView.init(frame: CGRect.init(x: 20, y: 230, width: 120, height: 50))
    private let lblCancel = UILabel.init(frame: CGRect.init(x: 0, y: 0, width: 120, height: 50))

    //OKボタン
    private let btnOk = UIView.init(frame: CGRect.init(x: 160, y: 230, width: 120, height: 50))
    private let lblOk = UILabel.init(frame: CGRect.init(x: 0, y: 0, width: 120, height: 50))


    //Ok押下時の実行関数
    public var okAct: (() -> Void)?


    init(_ mainView: UIView, _ isRotate: Bool){
        //半透明部分
        vwFilm.isHidden = true
        vwFilm.alpha = 0.5
        vwFilm.backgroundColor = .black

        //ダイアログ
        vwDialog.isHidden = true
        vwDialog.backgroundColor = .systemGray5
        vwDialog.alpha = 1

        //Msg
        vwDialog.addSubview(lblMsg)
        lblMsg.numberOfLines = 5
        lblMsg.textAlignment = .center

        //okボタン
        btnOk.addSubview(lblOk)
        vwDialog.addSubview(btnOk)

        lblOk.text = "OK"
        lblOk.textAlignment = .center
        lblOk.textColor = .white

        btnOk.backgroundColor = .systemBlue

        //Cancelボタン
        btnCancel.addSubview(lblCancel)
        vwDialog.addSubview(btnCancel)

        lblCancel.text = "Cancel"
        lblCancel.textColor = .white
        lblCancel.textAlignment = .center

        btnCancel.backgroundColor = .darkGray


        setTapOneEvent()

        mainView.addSubview(vwFilm)
        mainView.addSubview(vwDialog)

        vwDialog.center = mainView.center
        vwFilm.frame = mainView.frame

        if isRotate{
            vwDialog.transform = CGAffineTransform(rotationAngle: CGFloat( CGFloat.pi / 2 * 1))
        }
    }

    func prepare(_ msg: String, _ okAct: (() -> Void)?){
        self.lblMsg.text = msg
        self.okAct = okAct
    }


    func show(){
        vwFilm.isHidden = false
        vwDialog.isHidden = false
    }

    func hide(){
        vwFilm.isHidden = true
        vwDialog.isHidden = true
    }

    //タップイベントをセットする
    private func setTapOneEvent(){
        let tapOk = UITapGestureRecognizer(target: self, action: #selector(btnOk_Tap))
        tapOk.numberOfTouchesRequired = 1
        tapOk.numberOfTapsRequired = 1
        btnOk.addGestureRecognizer(tapOk)


        let tapCancel = UITapGestureRecognizer(target: self, action: #selector(btanCancel_Tap))
        tapCancel.numberOfTouchesRequired = 1
        tapCancel.numberOfTapsRequired = 1
        btnCancel.addGestureRecognizer(tapCancel)
    }

    @objc private func btnOk_Tap(){
        self.okAct?()
        hide()
    }

    @objc private func btanCancel_Tap(){
        hide()
    }
}