Can't get indexPath of cell in header - swift

Question

I have created prototype custom header cell for a tableView with a button on it. I am trying to get the indexPath of the cell when the button is tapped, but I don't receive it. Any idea what I am doing wrong here?
protocol MediaHeaderCellDelegate: class {
func editPost(cell: MediaHeaderCell)
}
class MediaHeaderCell: UITableViewCell {
weak var delegate: MediaHeaderCellDelegate?
#IBAction func moreOptionsAction(_ sender: UIButton) {
delegate?.editPost(cell: self)
}
}
class NewsfeedTableViewController:UITableViewController, MediaHeaderCellDelegate {
func editPost(cell: MediaHeaderCell) {
guard let indexPath = tableView.indexPath(for: cell) else {
print("indexpath could not be given")
return}
}
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView?
{
let cell = tableView.dequeueReusableCell(withIdentifier: Storyboard.mediaHeaderCell) as! MediaHeaderCell
cell.delegate = self
cell.media = media[section]
return cell
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: Storyboard.mediaCell, for: indexPath) as! MediaTableViewCell
cell.currentUser = currentUser
cell.media = media[indexPath.section]
cell.delegate = self
return cell
}
}

Answer 1

So this is actually all about learning what section a section header belongs to?? Here’s what I do. I have a header class:
class MyHeaderView : UITableViewHeaderFooterView {
var section = 0
}
I register it:
self.tableView.register(
MyHeaderView.self, forHeaderFooterViewReuseIdentifier: self.headerID)
I use and configure it:
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let h = tableView
.dequeueReusableHeaderFooterView(withIdentifier: self.headerID) as! MyHeaderView
// other stuff
h.section = section // *
return h
}
Now if the header view is tappable or contains a button or whatever, learning what section this is the header of is trivial.

Answer 2

Your immediate issue is that you are using a table cell as a section header view. That should not be done. Once you resolve that, your next task is to determine the table section from the header view whose button was tapped.
First, change your MediaHeaderCell to be a header view that extends UITableViewHeaderFooterView and update your protocol accordingly:
protocol MediaHeaderViewDelegate: class {
func editPost(view: MediaHeaderView)
}
class MediaHeaderView: UITableViewHeaderFooterView {
weak var delegate: MediaHeaderViewDelegate?
#IBAction func moreOptionsAction(_ sender: UIButton) {
delegate?.editPost(cell: self)
}
}
Then you need to register the header view in your view controller.
Then update your viewForHeaderInSection:
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let view = tableView.dequeueReusableHeaderFooterView(withIdentifier: Storyboard.mediaHeaderView) as! MediaHeaderView
view.delegate = self
view.media = media[section]
view.tag = section
return view
}
And last, update your protocol method implementation:
func editPost(view: MediaHeaderView) {
let section = view.tag
// do something
}
There is one possible issue with this. If your table allows sections to be added or removed, then it is possible that a header view's tag could be wrong when the button is tapped.