uitableview autolayout custom cell causing extra height - ios

Question

uitableview autolayout custom cell causing extra height. Unable to detect where causing the issue while in different project working fine.
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
[_stubCell layoutSubviews];
[self configureCell:_stubCell atIndexPath:indexPath];
CGFloat height = [_stubCell.contentView systemLayoutSizeFittingSize:UILayoutFittingCompressedSize].height;
return height;
}
- (CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath {
return 40.f;
}
- (void)configureCell:(CCACustomCell *)cell atIndexPath:(NSIndexPath *)indexPath {
cell.customLabel.text = [_tableData objectAtIndex:indexPath.row];
cell.customLabel.font = [UIFont fontWithName:#"Avenir-Light" size:16.0];
cell.customLabel.textColor = UIColorFromRGB(0x32383B);
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
CCACustomCell *cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
[self configureCell:cell atIndexPath:indexPath];
return cell;
}

Answer 1

Could you provide details on how are you creating _stubCell?It might be due to some constraint on label.
Have you tried with calculating string height?
+(CGFloat )calculateStringHeight:(NSString *)string WithFont:(UIFont *)font andSidePadding:(CGFloat )padding{
CGRect rect = [string boundingRectWithSize:CGSizeMake([[UIScreen mainScreen]bounds].size.width - (2*padding), 1000) options:NSStringDrawingUsesLineFragmentOrigin attributes:#{NSFontAttributeName:font} context:nil];
return rect.size.height;
}

Answer 2

You can return required height for your Label like this. Where you should pass Your description label width in LABEL_DESCRIPTION_WIDTH.
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
CGSize constrainedSize = CGSizeMake(LABEL_DESCRIPTION_WIDTH , 9999);
NSDictionary *attributesDictionary = [NSDictionary dictionaryWithObjectsAndKeys:[UIFont fontWithName:FONT_NAME size:FONT_SIZE], NSFontAttributeName,nil];
NSMutableAttributedString *string = [[NSMutableAttributedString alloc] initWithString:[_tableData objectAtIndex:indexPath.row] attributes:attributesDictionary];
CGRect requiredHeight = [string boundingRectWithSize:constrainedSize options:NSStringDrawingUsesLineFragmentOrigin context:nil];
return requiredHeight;
}