To access Tableview cell in Button action - swift

Question

I want to delete tableview cell by clicking a button present in the same cell. But I am unable to access the cell in the button action function.
Please help me to Access this cell. My code is -
class MatchesViewController: UIViewController{
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let cell = tableView.dequeueReusableCell(withIdentifier: "MatchingUsersTVCell") as? MatchingUsersTVCell else{
return UITableViewCell()
}
let likeUid = userIdArray[indexPath.row]
cell.heartBtn.tag = indexPath.row
cell.heartBtn.addTarget(self, action: #selector(userLikeButtonWasTappaed(sender:)), for: .touchUpInside)
}
#objc func userLikeButtonWasTappaed(sender: UIButton){
if let cell = sender.superview as? MatchingUsersTVCell{
CellAnimator.animate(cell: cell)
}
let tag = sender.tag
let userid = userIdArray[tag]
}
}

Answer 1

Try this code:
#objc func userLikeButtonWasTappaed(sender: UIButton){
guard let indexPath = tableView.indexPathForRow(at: sender.convert(sender.frame.origin, to: tableView)) else {
return
}
let cell = tableView.cellForRow(at: indexPath) as? MatchingUsersTVCell
}
And in your cellForRowAt function add the following code:
cell.yourBtn.tag = indexPath.row
cell.yourBtn.addTarget(self, action: #selector(userLikeButtonWasTappaed(sender:)), for: .touchUpInside)

Answer 2

I'd stay away from using tags, and instead implement protocol/delegate.
Using indexPath allows use of multiple sections, etc...
1) Create a protocol:
protocol MatchingUsersTVCellDelegate : class {
func didTapLikeButton(_ indexPath: IndexPath)
func didTapOtherButton(_ indexPath: IndexPath)
}
2) Create/Update your cell:
class MatchingUsersTVCell : UITableViewCell {
weak var delegate: MatchingUsersTVCellDelegate?
var indexPath: IndexPath!
// add target to your like button
func didTapLIkeButton(_ sender: UIButton) {
self.delegate?.didTapLikeButton(indexPath)
}
func didTapOtherButton() {
self.delegate?.didTapOtherButton(indexPath)
}
}
3) make sure your viewController conforms to the new delegate:
extension YourViewController: MatchingUsersTVCellDelegate {
func didTapLikeButton(_ indexPath: IndexPath) {
//Do something with the indexPath or indexPath.row
dataSource.remove(at: indexPath.row)
}
func didTapOtherButton(_ indexPath: IndexPath) {
//Do something else with the indexPath or indexPath.row
}
}
4) Set delegate and indexPath
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell...
cell.delegate = self
cell.indexPath = indexPath
return cell
}

Answer 3

Within MatchingUsersTVCell, add two properties, one named parentVC of type UIViewController and one named index of type Int:
class MatchingUsersTVCell: UITableViewCell {
var parentVC: UIViewController!
var index: Int!
...
}
Then, when creating each cell, set these two values appropriately:
class MatchesViewController: UIViewController, UITableViewDelegate, UITableViewDatasource {
...
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let cell = tableView.dequeueReusableCell(withIdentifier: "MatchingUsersTVCell") as? MatchingUsersTVCell else {
return UITableViewCell()
}
cell.parentVC = self
cell.index = index
...
return cell
}
}
Now, you simply update your parentVC's tableView's data source and reload its data whenever the button is tapped:
class MatchingUsersTVCell: UITableViewCell {
...
#objc func userLikeButtonWasTappaed(sender: UIButton){
parentVC.userIdArray.remove(at: index)
parentVC.tableView.reloadData()
}
}

Answer 4

you can get it like this in your selector method
#objc func userLikeButtonWasTappaed(button:UIButton){
guard let indexPath = myTableView.indexPathForRow(at: button.convertPoint(button.frame.origin, toView: myTableView)) else {
print("Error: indexPath)")
return
}
print("indexPath.row: \(indexPath.row)")
}