identifying Button selection of each row in Tableview? - iphone

Question

(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(230.0f, 4.0f, 60.0f, 36.0f);
[btn setTitle:#"OK" forState:UIControlStateNormal];
[btn setTitle:#"OK" forState:UIControlStateSelected];
[btn addTarget:self action:#selector(onClickRename:) forControlEvents:UIControlEventTouchUpInside];
[cell addSubview:btn];
return cell;
}
but if the user selects the button on particular row, i can change that image through onClickRename...but can i get inwhich row's image has been touched through
(void)tableView:(UITableView )tableView didSelectRowAtIndexPath:(NSIndexPath)indexPath ?

Answer 1

you could do something like
[btn setTag:[indexPath] row]
in your cell setup, and then
- (void) onClickRename:(id)sender {
int row = sender.tag;
}
you'd know which table row was hit.

Answer 2

Apple uses the following technique in their Accessory sample code:
- (void)checkButtonTapped:(id)sender event:(id)event
{
NSSet *touches = [event allTouches];
UITouch *touch = [touches anyObject];
CGPoint currentTouchPosition = [touch locationInView:self.tableView];
NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint: currentTouchPosition];
if (indexPath != nil)
{
// do what you want with the item at indexPath
}
}

Answer 3

In Swift, you can set a tag for each button
Also, set each index value as its tag, we get to know which button is clicked at which row.
to set tag, in cellForAtIndexPath
cell.button.tag = indexPath.row
in button Action
#IBAction func anAction(_sender : AnyObject){
let tappedButton = sender.tag // gives the row and button
}