基于Swift中标签文本长度的dynamic定制UITableViewCell的高度

我一直在试图做一个dynamic单元格与标签使用swift支持IOS7在heightForRowAtIndexPath但我只find目标C代码，是否有可能让别人帮我重写这个代码到Swift？

  // Fetch yourText for this row from your data source.. NSString *yourText = [yourArray objectAtIndex:indexPath.row]; CGSize lableWidth = CGSizeMake(300, CGFLOAT_MAX); // 300 is fixed width of label. You can change this value CGSize requiredSize = [yourText sizeWithFont:[UIFont fontWithName:@"Times New Roman" size:19] constrainedToSize:lableWidth lineBreakMode:NSLineBreakByWordWrapping]; // You can put your desire font // Here, you will have to use this requiredSize and based on that, adjust height of your cell. I have added 10 on total required height of label and it will have 5 pixels of padding on top and bottom. You can change this too. int calculatedHeight = requiredSize.height+10; return (float)calculatedHeight; 

正是这个声明（如何将其转换为swift）：

 CGSize requiredSize = [yourText sizeWithFont:[UIFont fontWithName:@"Times New Roman" size:19] constrainedToSize:lableWidth lineBreakMode:NSLineBreakByWordWrapping] 

我试图将其转换（但它不起作用的原始目标-c）：

  var requiredSize: CGSize = originalString.sizeWithAttributes([NSFontAttributeName: UIFont.systemFontOfSize(19.0)]) 

Answer 1

也许有可能没有UILabel但这工作得很好。

 let label = UILabel(frame: CGRect(x: 0, y: 0, width: 300, height: 10000)) label.text = someText label.numberOfLines = 100 label.font = UIFont(name: "Times New Roman", size: 19.0) label.sizeToFit() return label.frame.height + 10