iPhone - dequeueReusableCellWithIdentifier issue with custom cells

Question

Hi

I am using a custom UITableViewCell class. My cell has multiple buttons (4 to be precise) on it and the button clicks are handled in the UIViewController which uses this cell class.

I was trying to use the button's tag to calculate the row number on which the button was clicked. But doing this causes an issue if a cell was not created and instead uses a free object. In that case the tag and the row number do not match.

Can someone please tell me how I can handle this case? If I give the same tag to all buttons in different rows, how can I identify the row on which the button was clicked?

Thanks a lot.

Answer 1

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    MyTableCell *cell = (MyTableCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {   
     // whatever you have now
    }
    // Set up the cell...
    cell.myListViewController = self;
    int tag = indexPath.row;
    cell.button1.tag = tag;
    cell.button2.tag = tag;
    cell.button3.tag = tag;
....
}

This code will have a unique tag for buttons in each row. You are setting the tag not in the new cell creation but for all cases, including reuse.