Issues with Table View Cell Height Calculation in Objective-C with Auto Layout and Dynamic Content
I'm experiencing a problem with dynamically calculated cell heights in my UITableView using Auto Layout in Objective-C. Specifically, when I update the content of a cell's label, the height of the cell does not adjust as expected. I've set the constraints properly, but it seems that the table view does not recognize the changes in content size after the update. Here's the relevant part of my code. I have a UITableViewController that manages a table view and a custom cell class: ```objective-c // CustomTableViewCell.h @interface CustomTableViewCell : UITableViewCell @property (weak, nonatomic) IBOutlet UILabel *descriptionLabel; @end ``` ```objective-c // CustomTableViewCell.m @implementation CustomTableViewCell - (void)setDescriptionText:(NSString *)text { self.descriptionLabel.text = text; [self.descriptionLabel sizeToFit]; // Trying to adjust size } @end ``` In my UITableViewController, I’ve set up the cell height calculation like this: ```objective-c - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath { NSString *text = self.dataArray[indexPath.row]; CGSize constraint = CGSizeMake(tableView.bounds.size.width - 40, CGFLOAT_MAX); CGSize size = [text boundingRectWithSize:constraint options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:16]} context:nil].size; return size.height + 20; // padding } ``` When I update the label text in response to user actions (like a button tap), I call `reloadRowsAtIndexPaths:withRowAnimation:` but the height does not update correctly. Instead, it retains the previous height. ```objective-c - (void)updateCellAtIndex:(NSInteger)index withText:(NSString *)newText { [self.dataArray replaceObjectAtIndex:index withObject:newText]; NSIndexPath *indexPath = [NSIndexPath indexPathForRow:index inSection:0]; [self.tableView reloadRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic]; } ``` I've ensured that `estimatedRowHeight` and `rowHeight` are set to `UITableViewAutomaticDimension`, but it still doesn't behave correctly. I've also tried using `invalidateIntrinsicContentSize` on the label but that didn't help either. Has anyone encountered a similar issue or have suggestions on what I might be missing? I'm using Xcode 14 and targeting iOS 16. Thanks in advance for any help!