UITableViewCell Buttons with action

Question

Hi I have a custom UITableViewCell with three buttons to handle a shopping cart function, Plus,Minus and Delete button and I need to know which cell has been touched.

Answer 1

@pedrouan is great, except using button's tag option. In many cases, when you set button on tableViewCell, those buttons will modify tableView dataSource.(e.g. InsertRow, DeleteRow).

But the tag of the button is not updated even if a new cell is inserted or deleted. Therefore, it is better to pass the cell itself as a parameter rather than passing the button's tag to the parameter.

Here is my example to achieve this.

Your ExampleCell

protocol ExampleCellDelegate: class {
    func didTapButton(cell: ExampleCell)
}

class ExampleCell: UITableViewCell {

    weak var cellDelegate: ExampleCellDelegate?

    @IBAction func btnTapped(_ sender: UIButton) {
        cellDelegate?.didTapButton(cell: self)
    }
}

Your ViewController

class ViewController: ExampleCellDelegate {
    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        if let cell = tableView.dequeueReusableCell(withIdentifier: "ExampleCell", for: indexPath) as? ExampleCell {

            cell.cellDelegate = self
            return cell
        }
        return UITableViewCell()
    }

    func didTapButton(cell: ExampleCell) {
        if let indexPath = tableView.indexPath(for: cell) {
            // do Something
        }
    }
}