使用上下尾随和前导时,将uilabel中的文本与标签顶部对齐

您只需约束superview的底部空间(本例中为UIView)大于或等于0。标签的行数为0。

将您的问题作为文本:

 @IBOutlet weak var text: UILabel!

     override func viewDidLoad() {
         super.viewDidLoad()

         text.text = "I have UIView which has a child UILabel. I have read the following SO post about aligning the text to the top of
 the view : Vertically align text to top within a UILabel. I see the
 approach discussed here in different methodologies"
     }

你得到

当标签到达UIView底部时,文本停止。