UITableView可折叠表格部分

Question

我将从MSSQL中提取的数据分配给sectionNames和sectionDetay。我用sectionNames绘制主题的标题，并用sectionDetay显示主题的内容。我放了一个箭头来显示主题的内容。当按箭头键时，他必须显示主题的内容。当我单击当前代码中的箭头时，没有任何变化。单击“箭头”时如何获得主题的详细信息？当我单击“箭头”时，无法显示该主题的详细信息，该主题目前没有任何功能。我该怎么办？

class SSSTableViewController: UITableViewController {

    var sectionNames: [String] = []
    var sectionDetay: [String] = []

    override func viewDidLoad() {
        super.viewDidLoad()

             makaleBaşlık()
        makaleDetay()      
        tableView.estimatedRowHeight = 44.0
        tableView.rowHeight = UITableView.automaticDimension

        self.title = "SSS"
    }

    func makaleBaşlık(){
          let client = SQLClient.sharedInstance()!
                                client.connect("...", username: "...", password: "...", database: "...") { success in
                                client.execute("SELECT ... FROM ... WHERE ...", completion: { (_ results: ([Any]?)) in

                                        for table in results as! [[[String:AnyObject]]] {

                                            for row in table {

                                              for (_, value) in row {
                                                    if let intVal = value as? String {
                                                        self.sectionNames.append(String(intVal))
                                                    }
                                                } } }

                                        DispatchQueue.main.async {
                                            self.tableView.reloadData()
                                        }
                                        client.disconnect()
                                    })
                                }
      }


    func makaleDetay(){
          let client = SQLClient.sharedInstance()!
                                client.connect("...", username: "...", password: "nP8Ym%2sA", database: "...") { success in
                                client.execute("SELECT ... FROM ... WHERE ...", completion: { (_ results: ([Any]?)) in

                                        for table in results as! [[[String:AnyObject]]] {
                                            for row in table {
                                              for (_, value) in row {
                                                    if let intVal = value as? String {
                                                        let string = intVal
                                                        if let result = string.htmlAttributedString?.string {                                                            self.sectionDetay.append(String(result))
                                                        }
                                                    }
                                                } } }

                                        DispatchQueue.main.async {
                                            self.tableView.reloadData()
                                        }
                                    client.disconnect()  }) }
      }

extension SSSTableViewController {

     override func numberOfSections(in tableView: UITableView) -> Int {
        return sectionDetay.count
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 1
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell: CollapsibleTableViewCell = tableView.dequeueReusableCell(withIdentifier: "cell") as? CollapsibleTableViewCell ??
            CollapsibleTableViewCell(style: .default, reuseIdentifier: "cell")

   //  let item: ItemDetay = sections[indexPath.section].items[indexPath.row]

            cell.nameLabel.text = "SSS"
            cell.detailLabel.text = sectionDetay[indexPath.section]

        return cell
    }

    override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        return UITableView.automaticDimension
    }

    // Header
    override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
        let header = tableView.dequeueReusableHeaderFooterView(withIdentifier: "header") as? CollapsibleTableViewHeader ?? CollapsibleTableViewHeader(reuseIdentifier: "header")

            header.titleLabel.text = sectionNames[section]
            header.arrowLabel.text = ">"

        let tap = UITapGestureRecognizer(target: self, action: #selector(tapFunction))
           header.arrowLabel.isUserInteractionEnabled = true
           header.arrowLabel.addGestureRecognizer(tap)

            header.setCollapsed(true)

            header.section = section
            header.delegate = self

        return header
    }

    override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
        return 44.0
    }

    override func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
        return 1.0
    }

}

extension SSSTableViewController: CollapsibleTableViewHeaderDelegate {

    func toggleSection(_ header: CollapsibleTableViewHeader, section: Int) {
      //  let collapsed = !sections[section].collapsed
            // Toggle collapse
         //  sections[section].collapsed = collapsed
           header.setCollapsed(false)

           // Reload the whole section
           tableView.reloadSections(NSIndexSet(index: section) as IndexSet, with: .automatic)
    }

}