如何将UITableView上的分隔线放到特定部分？

Question

I've a UITableView with some sections. I want that just one section had separator lines for rows.

I tried this:

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    ...
    if indexPath.section == 1 {
        cell.separatorInset = UIEdgeInsetsMake(0, 1, 0, 0) // With other values too.
    }
    ...
    return cell
}

but nothing happens.

Answer 1

You can create an extension to UITableViewCell:

extension UITableViewCell {

  func hideSeparator() {
    self.separatorInset = UIEdgeInsets(top: 0, left: self.bounds.size.width, bottom: 0, right: 0)
  }

  func showSeparator() {
    self.separatorInset = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
  }
}

So you can use it in tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath)

if indexPath.section == 1 { 
    cell.hideSeparator()
} else {
    cell.showSeparator()
}