如何在Swift3 iOS中显示和隐藏表视图的自定义UITableView标题单元格

Question

I am developing an application in Swift3 where I have to show and hide UITableView Header for different users. For displaying UITableView Header View , I have created a custom class CustomHeaderCell of UITableViewCell .

Here is my code:

func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
        return 235.0
    }

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

        let headerCell = tableView.dequeueReusableCell(withIdentifier: "HeaderCell") as! CustomHeaderCell

        return headerCell
    }

Now Can anyone please help me to hide this Header of my UITableView ?

Note: I tried using this tableView.tableHeaderView?.isHidden = true , but not working. Should I need to do the validation in heightForHeaderInSection ?

Reference Link to Add HeaderViewCell: http://www.accella.net/knowledgebase/custom-header-and-footer-views-for-uitableviews/

Answer 1

If you have a way to differentiate users then you can just change the header height like this

func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
    if userA {
        return 235.0
    } else {
        return 0
    }
}

That should help in hiding the header

Answer 2

You are mixing tableHeaderView and section header views, which are differents:

• tableHeaderView is a view showed as a header for the whole UITableView
• section header views are reusable views used for displaying header above each section

In your case, you want to use section header views, so you should return empty ones for non concerned users (I assume here sectionNeedHeader will be replaced by your condition).

Also, you better use UITableViewHeaderFooterView instead of UITableViewCell . The behavior is globally the same but it's made for this usage:

func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
    if sectionNeedHeader {
        return 235.0
    }

    return 0.0
}

func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    if sectionNeedHeader {
        let headerCell = tableView.dequeueReusableHeaderFooterView(withIdentifier: "HeaderView") as! CustomHeaderView
        return headerView
    }

    return nil
}