Change button title for selected row in TableView Swift - ios

Question

i have a view controller in which there is a tableview cell having button on it. Button with title add comments. when i click on add comments button then it take me to the next page where textfield is present when i write something in it then press done button then my button title for all the cell changes. But i want only selected row button title should change. Below is my code of table view.
class MyTabViewController: UIViewController {
var addCommentsValueStore: String = "Add Comments"
#IBOutlet weak var tabTableView : ContentWrappingTableView!
#IBAction func addCommentsAction(_ sender: UIButton) {
guard let nextVC = MyCommentsRouter.getMyCommentsViewScreen() else { return }
nextVC.passAddCommentsDelegate = self
self.navigationController?.pushViewController(nextVC, animated: true)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let indetifier = "MyTabTableViewCell"
let cell = tableView.dequeueReusableCell(withIdentifier: indetifier, for: indexPath) as! MyTabTableViewCell
cell.addCommentsButton.setTitle(addCommentsValueStore, for: UIControl.State.normal)
}
}
extension MyTabViewController: AddCommentsDelegate{
func passAddComments(instruction: String) {
addCommentsValueStore = instruction
print(addCommentsValueStore)
}
}
below is the code of next view controller:
import UIKit
protocol AddCommentsDelegate{
func passAddComments(instruction: String)
}
class MyCommentsViewController: UIViewController {
#IBOutlet var addCommentsTextField: UITextField!
var passAddCommentsDelegate: AddCommentsDelegate?
override func viewDidLoad() {
super.viewDidLoad()
}
#IBAction func backActionClick(_ sender: UIButton) {
// guard let nextVC = MyTabRouter.getMyTabViewScreen() else { return }
self.navigationController?.popViewController(animated: true)
}
#IBAction func DoneActionClick(_ sender: Any) {
let dataToBeSent = addCommentsTextField.text
self.passAddCommentsDelegate?.passAddComments(instruction: dataToBeSent!)
self.navigationController?.popViewController(animated: true)
}
}

Answer 1

You can do it in this delegate method as below:
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
for (id object in cell.superview.subviews) {
if ([object isKindOfClass:[UITableViewCell class]]) {
UITableViewCell *cellNotSelected = (UITableViewCell*)object;
cellNotSelected.textLabel.textColor = [UIColor blackColor];
}
}
cell.textLabel.textColor = [UIColor redColor];
[tableView deselectRowAtIndexPath:indexPath animated:NO];
}

Answer 2

you need to change you logic for done those things. First you need to declare string Wrong. Because string only hold a single value. You need to declare variable as Dictionary [IndexPath:String] Or AnyHashable Dictionary for store the value. I will give reference code below feel free to refer and if any doubt in the code please ask me in command
Reference Code
import UIKit
class FirstViewController: UIViewController {
#IBOutlet weak var tableView: UITableView!
var commend: [IndexPath: String] = [:]
}
extension FirstViewController: UITableViewDelegate, UITableViewDataSource{
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 10
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: ListTableViewCell.self), for: indexPath) as! ListTableViewCell
cell.button.setTitle(commend[indexPath] ?? "Add commend", for: .normal)
cell.label.text = "\(indexPath.row)"
cell.button.addTarget(self, action: #selector(self.addCommentsAction(_:)), for: .touchUpInside)
return cell
}
#objc func addCommentsAction(_ sender: UIButton) {
guard let nextVC = UIStoryboard(name: "Main", bundle: .some(.main)).instantiateViewController(withIdentifier: String(describing: CommendViewController.self)) as? CommendViewController else { return }
let buttonPosition:CGPoint = sender.convert(CGPoint.zero, to: self.tableView)
guard let indexPath = self.tableView.indexPathForRow(at: buttonPosition) else{
return
}
nextVC.delegate = self
nextVC.indexPath = indexPath
self.navigationController?.pushViewController(nextVC, animated: true)
}
}
extension FirstViewController: DataPassingDelegate{
func commendForIndex(_ string: String, indexPath: IndexPath) {
self.commend[indexPath] = string
self.tableView.reloadData()
}
}
class ListTableViewCell: UITableViewCell{
#IBOutlet weak var label: UILabel!
#IBOutlet weak var button: UIButton!
}
protocol DataPassingDelegate: AnyObject {
func commendForIndex(_ string: String, indexPath: IndexPath)
}
class CommendViewController: UIViewController {
#IBOutlet weak var textView: UITextView!
weak var delegate: DataPassingDelegate?
var indexPath = IndexPath()
#IBAction func doneCommend(_ sender: UIButton){
self.delegate?.commendForIndex(textView.text, indexPath: indexPath)
self.navigationController?.popViewController(animated: true)
}
}