How to know the UITableview row number

Question

I have a UITableViewCell with UISwitch as accessoryview of each cell. When I change the value of the switch in a cell, how can I know in which row

Answer 1

The accepted answer on this post is perfectly fine. I'd like to suggest to readers that the following, derived from @robmayoff on this post, is also perfectly fine:

- (NSIndexPath *)indexPathForView:(UIView *)view inTableView:(UITableView *)tableView {
    while (view && ![view isKindOfClass:[UITableViewCell class]])
        view = view.superview;
    UITableViewCell *cell = (UITableViewCell *)view;
    return [tableView indexPathForCell:cell];
}

Some have asserted that this approach contains too much computational work because of the while loop. The alternative, convert the view's origin to table view coordinate space and call indexPathForRowAtPoint:, hides even more work.

Some have asserted that this approach is unsafe relative to potential SDK changes. In fact, Apple has already changed the tableview cell hierarchy once, adding a contentView to the cell. This approach works before and after such a change. As long as view ancestors can be found via a chain of superviews (which is as fundamental as anything in UIKit), this is good code.