如何快速修复动画？

Question

我有UIImageView带有月亮图像。
而moonImageContainerView是superView的{​​{1}}
然后向UIImageView添加了滑动手势。

如果向上滑动，

moonImageContainerView

您可以使用gif查看结果
https://imgur.com/a/ftShkpO

---

现在，如果我只添加self.titleLabel.isHidden = false UIView.animate(withDuration: 0.3, delay: 0.0, options: .curveEaseIn, animations: { self.moonImageContainerView.transform = CGAffineTransform(scaleX: 0.5, y: 0.5) self.moonImageContainerView.center.y = self.view.center.y }, completion: nil)
我的动画是休息。

self.titleLabel.text = "MY TOPIA"

您可以使用gif查看结果
https://imgur.com/a/y57fPlA

为什么self.titleLabel.text = "MY TOPIA" // Just added this line. self.titleLabel.isHidden = false UIView.animate(withDuration: 0.3, delay: 0.0, options: .curveEaseIn, animations: { self.moonImageContainerView.transform = CGAffineTransform(scaleX: 0.5, y: 0.5) self.moonImageContainerView.center.y = self.view.center.y }, completion: nil) 消失在底部？
我该如何解决？

Answer 1

好吧，我使用了其余设置，但没有看到您的情况。

    import UIKit

    class ImageViewController: UIViewController {

        @IBOutlet  var moonImageContainerView: UIView!
        @IBOutlet  var titleLabel: UILabel!

        override func viewDidLoad() {
        super.viewDidLoad()

        let pan =  UISwipeGestureRecognizer.init(target: self, action: #selector(pp(_:)))
        pan.direction = .up
        moonImageContainerView.addGestureRecognizer(pan)

        }

        @objc func pp(_ pan: UISwipeGestureRecognizer){
        self.titleLabel.text = "MY TOPIA"
        self.titleLabel.isHidden = false

        UIView.animate(withDuration: 0.3, delay: 0.0, options: .curveEaseIn, animations: {
        self.moonImageContainerView.transform = CGAffineTransform(scaleX: 0.5, y: 0.5)
        self.moonImageContainerView.center.y = self.view.center.y
        }, completion: nil)
        }

    }