UITableVC No section header content shown

Question

converting my code to swift ONLY so no use of storyboards. After rewriting the code (no storyboard usage) the header information is NOT shown !!

If I change the viewForHeaderInSection return value from:

override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    let cell = tableView.dequeueReusableCell(withIdentifier: "headerId") as! ListsVCHeader
    cell.fillHeader(header: listTitles[section])

    return cell.contentView
}

to:

override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    let cell = tableView.dequeueReusableCell(withIdentifier: "headerId") as! ListsVCHeader
    cell.fillHeader(header: listTitles[section])

    return cell  // ==> removed .contectView
}

the header content is shown BUT the section header moves left performing a swipe gesture that I use to initiate a row delete. Any suggestions? Find the relevant code below.

class ListsVC: UITableViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        tableView.register(ListsVCHeader.self, forCellReuseIdentifier: "headerId")
        // register other Cells
    }

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

    override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int)
    -> String? {
        return listTitles[section]
    }

    override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {

        let cell = tableView.dequeueReusableCell(withIdentifier: "headerId") as! ListsVCHeader
        cell.fillHeader(header: listTitles[section])
        return cell.contentView
    }

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

    override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {

        switch editingStyle {
        case .delete:
            // mycode
        default:
            break
        }
    }
}

the Section Header cell

class ListsVCHeader: UITableViewCell {

    override init(style: UITableViewCellStyle, reuseIdentifier: String?) {

    super.init(style: style, reuseIdentifier: reuseIdentifier)
        // add subviews and constraints
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    func fillHeader (header: String) {
        name.text = header
    }
}

Answer 1

Change your register in viewDidLoad to:

tableView.register(ListsVCHeader.self, forHeaderFooterViewReuseIdentifier: "headerId") 

Your class ListsVCHeader should be changed to:

class ListsVCHeader: UITableViewHeaderFooterView

and last change the following code:

let cell = tableView.dequeueReusableCell(withIdentifier: "headerId") as! ListsVCHeader

to

let cell = tableView.dequeueReusableHeaderFooterView(withIdentifier: "headerId) as! ListsVCHeader