Table view cell elements not able to click and get data - ios

Question

I have one table view and inside that i placed one main view. And inside that main view i placed one button.And when ever use click on my cell button. I need to get the cell title label.This is what i need. But i tried following below code. Not sure what i am missing out. It not at all calling my cell.add target line.
Code in cell for row at index:
cell.cellBtn.tag = indexPath.row
cell.cellBtn.addTarget(self, action:#selector(self.buttonPressed(_:)), for:.touchUpInside)
#objc func buttonPressed(_ sender: AnyObject) {
print("cell tap")
let button = sender as? UIButton
let cell = button?.superview?.superview as? UITableViewCell
let indexPath = tableView.indexPath(for: cell!)
let currentCell = tableView.cellForRow(at: indexPath!)! as! KMTrainingTableViewCell
print(indexPath?.row)
print(currentCell.cellTitleLabel.text)
}
I even added a breakpoint, still it not at calling my cell.addTarget line
Tried with closure too. In cell for row at index:
cell.tapCallback = {
print(indexPath.row)
}
In my table view cell:
var tapCallback: (() -> Void)?
#IBAction func CellBtndidTap(_ sender: Any) {
print("Right button is tapped")
tapCallback?()
}
Here that print statement is getting print in console.

Answer 1

import UIKit
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var list = [String]()
#IBOutlet weak var tableView: UITableView!
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return list.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! MyTableViewCell
cell.saveButton.tag = indexPath.row
//cell.saveButton.accessibilityIdentifier = "some unique identifier"
cell.tapCallback = { tag in
print(tag)
}
return cell
}
}
class MyTableViewCell: UITableViewCell {
// MARK: - IBOutlets
#IBOutlet weak var saveButton: UIButton!
// MARK: - IBActions
#IBAction func saveTapped(_ sender: UIButton) {
tapCallback?(sender.tag)
}
// MARK: - Actions
var tapCallback: ((Int) -> Void)?
}

Answer 2

Actually this is not a good programming practice to add the button (which contains in table view cell) target action in view controller. We should follow the protocol oriented approach for it. Please try to under stand the concept.
/*This is my cell Delegate*/
protocol InfoCellDelegate {
func showItem(item:String)
}
/*This is my cell class*/
class InfoCell: UITableViewCell {
//make weak reference to avoid the Retain Cycle
fileprivate weak var delegate: InfoCellDelegate?
//Outlet for views
#IBOutlet var showButton: UIButton?
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
//This is the public binding function which will bind the data & delegate to cell
func bind(with: DataModel?, delegate: InfoCellDelegate?, indexPath: IndexPath) {
//Now the bind the cell with data here
//.....
//Assign the delegate
self.delegate = delegate
}
//Button action
#IBAction func rowSelected(sender: UIButton) {
self.delegate?.showItem(item: "This is coming from cell")
}
}
/*Now in your ViewController you need to just confirm the InfoCellDelegate & call the bind function*/
class ListViewController: UIViewController {
//Views initialisation & other initial process
}
//Table view Delegate & Data source
extension ListViewController: UITableViewDataSource, UITableViewDelegate {
/**
Configure the table views
*/
func configureTable() {
//for item table
self.listTable.register(UINib.init(nibName: "\(InfoCell.classForCoder())", bundle: nil), forCellReuseIdentifier: "\(InfoCell.classForCoder())")
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 5
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "InfoCell") as! InfoCell
cell.bind(with: DataModel, delegate: self, indexPath: indexPath)
return cell
}
}
extension ListViewController: InfoCellDelegate {
func showItem(item) {
print(item)
}
}