how can I take index of particular row by clicking a button(targeting to method)?

Question

I have made a table and contents some values, I have a button coding like

cell.textLabel.textColor = [UIColor whiteColor];

UIButton *btn=[UIButton  buttonWithType:UIButtonTypeCustom];
[btn setBackgroundColor:[UIColor clearColor]];
[btn setBackgroundImage:[UIImage imageNamed:@"edit_button.png"] forState:UIControlStateNormal];
[btn setFrame:CGRectMake(290, 15, 15, 15)];
[btn addTarget:self action:@selector(editTable:) 
       forControlEvents:UIControlEventTouchUpInside];
[cell.contentView addSubview:btn];

NSString *cellValue = [myArrayNew objectAtIndex:indexPath.row];
cell.textLabel.text = cellValue;

return cell;

I want to click that button and take values from that particular index,

like

Ali (button here) --------index 0 Sajid (button here) --------index 1 Robert (button here) --------index 2 RaM (button here) --------index 3

Theser are cells of table, now how can I get index as I click that button?

if you are not getting my question, you can ask me again...

possible duplicate of [Detecting which UIButton was pressed in a UITableView](http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview) — Vladimir, Feb 17 '11 at 09:47

score 2 · Accepted Answer · answered Feb 17 '11 at 10:29

I found my answer,

Just write the following coding inside the button targeted method and use clickButtonPath as your index path. It is working perfectly, simply

UITableViewCell *clickedCell = (UITableViewCell *)[[sender superview] superview];
NSIndexPath *clickedButtonPath = [self.tableView indexPathForCell:clickedCell];

score 0 · Answer 2 · answered Feb 17 '11 at 09:48

0

btn.tag = indexPath.row;

Then in (void)editTable:(id)sender:

int row = (UIButton *)btn.tag;

answered Feb 17 '11 at 09:48

kovpas

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but if it is saving one value in btn, then not removing it, even I am clicking other buttons, now what to do ? – Chatar Veer Suthar Feb 17 '11 at 09:57

score 0 · Answer 3 · answered Feb 17 '11 at 09:50

you would use something like this.

- (IBAction)editTable:(UIButton *)sender {
   UIView *contentView = [sender superView];
   UITableViewCell *cell = [contentView superView];
   NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
}

But first you should make sure to properly reuse your cells. By changing your code like this:

cell = ... dequeue cell ...
if (cell == nil) {
    cell = ... create new cell ...
    UIButton *btn=[UIButton  buttonWithType:UIButtonTypeCustom];
    btn.tag = 194;
    [btn setBackgroundColor:[UIColor clearColor]];
    [btn setBackgroundImage:[UIImage imageNamed:@"edit_button.png"] forState:UIControlStateNormal];
    [btn setFrame:CGRectMake(290, 15, 15, 15)];
    [btn addTarget:self action:@selector(editTable:) 
       forControlEvents:UIControlEventTouchUpInside];
    [cell.contentView addSubview:btn];
}
// if you need to change something for this button you can get it like this:
//UIButton *btn= [cell.contentView viewWithTag:194];
NSString *cellValue = [myArrayNew objectAtIndex:indexPath.row];
cell.textLabel.text = cellValue;

return cell;

Error here "'*** -[UIButton superView]: unrecognized selector sent to instance 0x393a5c0'" — Chatar Veer Suthar, Feb 17 '11 at 10:15

how can I take index of particular row by clicking a button(targeting to method)?

3 Answers3