How do I use tableView.indexPathForRow(at: touchPoint) with sections-CodePudding

I use sections to load messages(viewForFooterInSection) and rows to load the reply of specific messages if any.

Previously I was using a long press gesture on the tableView to detect a touch on the tableView and return the indexPath using tableView.indexPathForRow(at: touchPoint), however I have not found a similar method to get indexPath of long pressed cell

Can anyone help?

CodePudding user response：

I am not sure why you are going for cell-level gesture when you have already achieved getting indexPath using gesture on tableview. In case you are trying to get cell from indexPath then you can try like

guard let cell = tableView.cellForRow(at: indexPath) else { return }

Anyhow coming to answer for your question, we can do the following way to get indexPath from cell-level.

protocol CustomCellDelegate: AnyObject {
func longPressAction(onCell: CustomCell)

}

class CustomCell: UITableViewCell {

weak var delegate: CustomCellDelegate?

override func awakeFromNib() {
    super.awakeFromNib()
    let lg = UILongPressGestureRecognizer(target: self, action: #selector(longPress))
    lg.minimumPressDuration = 0.5
    lg.delaysTouchesBegan = true
    self.addGestureRecognizer(lg)
}

@objc func longPress(gestureReconizer: UILongPressGestureRecognizer) {
    if gestureReconizer.state != UIGestureRecognizer.State.ended {
        return
    }
    delegate?.longPressAction(onCell: self)
}
}

And in your tableview cell for row method, assign the delegate.

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    guard let cell = tableView.dequeueReusableCell(withIdentifier: "CustomCell", for: indexPath) as? CustomCell else { return UITableViewCell() }
    cell.delegate = self
    return cell
}

And confirm to the CustomCellDelegate protocol in your viewController.

extension ViewController: CustomCellDelegate {
func longPressAction(onCell: CustomCell) {
    guard let indexPath = tableView.indexPath(for: onCell) else { return }
    print(indexPath.section, indexPath.row)
}
}