问如何使用swift创建自定义弹出视图？

EN

customView.hidden = true

customView.hidden = false

    private var customView: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()
        customView.hidden = true
    }

    private func loadCustomViewIntoController() {
         let customViewFrame = CGRect(x: 0, y: 0, witdh: view.frame.width, height: view.frame.height - 200)
         customView = UIView(frame: customViewFrame)

         view.addSubview(customView)

         customView.hidden = false

        // any other objects should be tied to this view as superView 
        // for example adding this okayButton

        let okayButtonFrame = CGRect(x: 40, y: 100, width: 50, height: 50)
        let okayButton = UIButton(frame: okayButtonFrame )

         // here we are adding the button its superView
         customView.addSubview(okayButton)

         okayButton.addTarget(self, action: #selector(self.didPressButtonFromCustomView:), forControlEvents:.TouchUpInside)

    }


    func didPressButtonFromCustomView(sender:UIButton) {
         // do whatever you want
         // make view disappears again, or remove from its superview
    }


    @IBAction func rateButton(sender:UIBarButtonItem) {
        // this barButton is located at the top of your tableview navigation bar
        // when it pressed make sure you remove any other activities that were on the screen, for example dismiss a keyboard 

          loadCustomViewIntoController()
    }