无法再将锚点约束添加到TableCell的视图

class CustomTableViewCell: UITableViewCell {
    var customView: UIView!

    override init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
        super.init(style: style, reuseIdentifier: reuseIdentifier)
        setupCustomView()
    }

    required init?(coder: NSCoder) {
        super.init(coder: coder)
        setupCustomView()
    }

    private func setupCustomView() {
        customView = UIView()
        customView.translatesAutoresizingMaskIntoConstraints = false
        contentView.addSubview(customView)

        // 添加其他子视图和约束
        // ...

        // 更新约束
        setNeedsUpdateConstraints()
    }

    override func layoutSubviews() {
        super.layoutSubviews()

        // 动态计算和更新约束
        updateCustomViewConstraints()
    }

    private func updateCustomViewConstraints() {
        // 先移除旧的约束
        customView.removeConstraints(customView.constraints)

        // 添加新的约束
        let leadingConstraint = NSLayoutConstraint(item: customView, attribute: .leading, relatedBy: .equal, toItem: contentView, attribute: .leading, multiplier: 1.0, constant: 16.0)
        let trailingConstraint = NSLayoutConstraint(item: customView, attribute: .trailing, relatedBy: .equal, toItem: contentView, attribute: .trailing, multiplier: 1.0, constant: -16.0)
        let topConstraint = NSLayoutConstraint(item: customView, attribute: .top, relatedBy: .equal, toItem: contentView, attribute: .top, multiplier: 1.0, constant: 8.0)
        let bottomConstraint = NSLayoutConstraint(item: customView, attribute: .bottom, relatedBy: .equal, toItem: contentView, attribute: .bottom, multiplier: 1.0, constant: -8.0)

        contentView.addConstraints([leadingConstraint, trailingConstraint, topConstraint, bottomConstraint])
    }
}