Retrieve information from Table Cell? - swift

Question

I have a custom UITableViewCell with 2 labels and a button. The cell has it's own class:
class personTableCell: UITableViewCell {
#IBOutlet weak var nameLabel: UILabel!
#IBOutlet weak var emailLabel: UILabel!
#IBAction func inviteButtonPressed(_ sender: Any) {
self.accessoryType = .checkmark
}
}
Inside the view controller that contains the table view, I add the cells to the table in this method:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "person", for: indexPath) as? personTableCell
cell?.nameLabel.text = results[indexPath.row].name
cell?.emailLabel.text = results[indexPath.row].email
return cell!
}
When a user presses the button inside the cell that calls the #IBAction func inviteButtonPressed, I want to add the cell's labels' text into an array that's initialized in the same view controller as the table.
How can I achieve such a thing if the #IBAction func inviteButtonPressed is in a seperate file as the table's view controller?

Answer 1

I think using delegate is one of solutions.
In TableViewCell class
#objc protocol PersonTableViewCellDelegate {
func personTableViewCellInviteButtonPressed(cell: PersonTableViewCell)
}
class PersonTableViewCell: UITableViewCell {
weak var delegate: PersonTableViewCellDelegate?
#IBAction func inviteButtonPressed(_ sender: Any) {
delegate?.personTableViewCellInviteButtonPressed(cell: self)
}
}
In ViewController class
class TableViewController: UITableViewController, PersonTableViewCellDelegate {
var results: [Person] = []
var invited: [Person] = []
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "person", for: indexPath) as! PersonTableViewCell
cell.nameLabel.text = results[indexPath.row].name
cell.emailLabel.text = results[indexPath.row].email
cell.delegate = self
return cell
}
func personTableViewCellInviteButtonPressed(cell: PersonTableViewCell) {
guard let indexPath = tableView.indexPath(for: cell) else {
return
}
let person = results[indexPath.row]
invited.append(person)
}
}