在UITableViewCell内编辑UITextField失败

class CustomTableViewCell: UITableViewCell, UITextFieldDelegate {
    @IBOutlet weak var textField: UITextField!

    override func awakeFromNib() {
        super.awakeFromNib()
        textField.delegate = self
        NotificationCenter.default.addObserver(self, selector: #selector(textFieldDidChange(_:)), name: UITextField.textDidChangeNotification, object: textField)
    }

    override func prepareForReuse() {
        super.prepareForReuse()
        NotificationCenter.default.removeObserver(self, name: UITextField.textDidChangeNotification, object: textField)
    }

    @objc func textFieldDidChange(_ notification: Notification) {
        guard let textField = notification.object as? UITextField else { return }
        // 处理文本更改事件
    }

    func textFieldShouldReturn(_ textField: UITextField) -> Bool {
        // 处理键盘的回车键事件
        return true
    }
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "CustomTableViewCell", for: indexPath) as! CustomTableViewCell
    cell.textField.tag = indexPath.row
    cell.textField.delegate = cell
    return cell
}