How to change height Constraint of UIView in UitableviewCell when using UITableViewAutomaticDimension

问题

I have a UIView in the UITableViewCell , which needs to change its height when user taps on "less/more" button

My code is

 - (CGFloat)tableView:(UITableView *)tableView       estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return UITableViewAutomaticDimension;
}

回答1:

Hook items height constraint as IBOutlet and change it in cellForRow like this

 cell.viewHeightCon.constant = // value

and before return cell add

 cell.layoutIfNeeded()

来源：https://stackoverflow.com/questions/48401654/how-to-change-height-constraint-of-uiview-in-uitableviewcell-when-using-uitablev