Calculate UITableViewCell height to fit string

Question

I have a NSMutableArray, which could contain several hundreds of different strings. Each string is user defined and could have any length, yet no more than an a

Answer 1

I personally use a convenience method which I then send a message to in tableView:heightForRowAtIndexPath:

- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    return [self cellHeightForRowAtIndexPath:indexPath];
}

- (CGFloat)cellHeightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSString *cellString = ;

    NSDictionary *attributes = @{ NSFontAttributeName: [UIFont systemFontOfSize:16.0f] };
    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc]
                                                   initWithString:cellString
                                                   attributes:attributes];

    CGFloat width = self.tableView.frame.size.width - 32.0f;
    CGRect frame = [attributedString boundingRectWithSize:CGSizeMake(width, MAXFLOAT)
                    options:NSStringDrawingUsesLineFragmentOrigin context:nil];

    // Add some extra padding to the height
    CGFloat height = frame.size.height + 16.0f;

    return ceil(height);
}

And of course, I set the numberOfLines property of my UILabel to 0 in UITableViewCell.