Swift列表中view删除效果

使用示例：

class ViewController: UIViewController {
   
    private let listv: listView = {
        let view = listView()
        view.layer.cornerRadius = 10
        view.layer.masksToBounds = true
        return view
    }()
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.view.backgroundColor = .white
        listv.frame = CGRect(x: 15, y: 115, width: UIScreen.main.bounds.size.width-2*15, height: 5*listv.labelHeight)
        view.addSubview(listv)
        listv.arr = ["testA","testB","testC","testD","testE"]
        listv.addLabel()
        
    }
}

ListView代码：

private class listView: UIView {
    
    private var labela: [UILabel] = []
    var arr: [String] = []
    let labelHeight: CGFloat = 79
    override init(frame: CGRect) {
        super.init(frame: frame)
        
    }
    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }
    
    func addLabel() {
        for i in 0..<arr.count {
            let label = UILabel()
            label.frame = CGRect(x: 0, y: self.labelHeight*CGFloat(i), width: self.bounds.size.width, height: self.labelHeight)
            self.addSubview(label)
            label.tag = 100+i
            label.text = arr[i]
            label.backgroundColor = .lightGray
            let tap = UITapGestureRecognizer.init(target: self, action: #selector(labelClick(tap:)))
            label.isUserInteractionEnabled = true
            label.addGestureRecognizer(tap)
            let linev = UIView()
            linev.frame = CGRect(x: 0, y: label.bounds.size.height-1, width: label.bounds.size.width, height: 1)
            linev.backgroundColor = .systemGray
            label.addSubview(linev)
            labela.append(label)
        }
    }
    
    @objc private func labelClick(tap: UITapGestureRecognizer) {
        guard let label = tap.view as? UILabel else {
            return
        }
        for (index,item) in self.arr.enumerated() {
            if item == label.text {
                self.arr.remove(at: index)
            }
        }
        self.isUserInteractionEnabled = false
        updateLabel(label)
    }
    
    private func updateLabel(_ label: UILabel) {
        UIView.animate(withDuration: 1.5) {
            label.frame = CGRect(x: label.bounds.size.width, y: label.frame.origin.y, width: label.bounds.size.width, height: label.bounds.size.height)
        } completion: { suc in
            if suc {
                label.removeFromSuperview()
                for (index,item) in self.labela.enumerated() {
                    if item.text == label.text {
                        self.labela.remove(at: index)
                    }
                }
                for i in 0..<self.labela.count {
                    let temlabel = self.labela[i]
                    temlabel.frame = CGRect(x: 0, y: self.labelHeight*CGFloat(i), width: label.bounds.size.width, height: self.labelHeight)
                }
                self.frame = CGRect(x: self.frame.origin.x, y: 115, width: label.bounds.size.width, height: CGFloat(self.arr.count)*self.labelHeight)
                self.isUserInteractionEnabled = true
                
            }
        }
    }
    
}