根据Swift 3中按钮点击的条件显示不同的视图？

Question

我有ViewController他们是右上角的按钮。当我点击该按钮时，我希望Show/Hide UIView位于底部ViewController，同一ViewController的{​​{1}}。任何人帮助我。提前谢谢。

Answer 1

如果只有Show/Hide a UIView是您的要求，则以下代码可以使用：

class ViewController: UIViewController
{
    @IBOutlet weak var viewHeightConstraint: NSLayoutConstraint!
    @IBOutlet weak var customView: UIView!

    override func viewDidLoad()
    {
        super.viewDidLoad()
    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        self.viewHeightConstraint.constant = self.view.bounds.height / 2
    }

    @IBAction func onShowHideButtonPress(_ sender: UIButton)
    {
        self.customView.isHidden = !self.customView.isHidden
    }
}

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