Question

is there a way to detect if a header of a section in an UITableView is currently floating? I want to scroll the table view to the header position only if it is floating.

Thanks in advance!

Answer 1

The header will be floating if the first cell of the section is no longer visible. So:

NSIndexPath *topCellPath = [[self.tableView indexPathsForVisibleRows] objectAtIndex:0];
if (topCellPath.row != 0)
{
    // Header must be floating!
}

You could achieve a similar effect by scrolling to the index path with scrollToRowAtIndexPath:atScrollPosition:animated: and a scroll position of UITableViewScrollPositionNone – this would not scroll if the first cell in the section was already on the screen.