How to calculate cell height.

boundingRectWithSize

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {

    LHIdeaGroupCell *cell = [tableView dequeueReusableCellWithIdentifier:@"IdeaGroupCell"];
    
    CGFloat labelWidth = cell.descriptionLabel.width;
    LHIdeaGroup *currentGroup = [self.objects objectAtIndex:indexPath.row];
    CGRect r = [currentGroup.Description boundingRectWithSize:CGSizeMake(labelWidth, 0)
                                                options:NSStringDrawingUsesLineFragmentOrigin
                                             attributes:@{NSFontAttributeName: cell.descriptionLabel.font}
                                                context:nil];
    return r.size.height + 60.f;


}