如何以编程方式使 iOS 文本标签居中对齐？

Question

我想设置文本标签的对齐方式，该怎么做？

Answer 1

我认为这些答案对您有帮助。正确的方法是：

yourLabelName.textAlignment = NSTextAlignmentCenter;

有关更多文档，您可以阅读以下内容：
https://developer.apple.com/documentation/uikit/uilabel

在 Swift 中：-

yourLabelName.textAlignment = .center

这里.center是NSTextAlignment.center

Answer 2

在这里，

yourLabel.textAlignment = UITextAlignmentCenter

编辑

如果您的目标是 iOS6 以上，请使用 NSTextAlignmentCenter，因为 UITextAlignmentCenter 已被弃用

希望它有帮助。

Answer 3

从 iOS 6.0 开始，这一情况已发生变化，UITextAlignment 已被弃用。现在正确的方法是：

yourLabel.textAlignment = NSTextAlignmentCenter;

这是 NSTextAlignment 枚举，它提供了文本对齐选项：

Objective-C:

enum {
   NSTextAlignmentLeft      = 0,
   NSTextAlignmentCenter    = 1,
   NSTextAlignmentRight     = 2,
   NSTextAlignmentJustified = 3,
   NSTextAlignmentNatural   = 4,
};
typedef NSInteger NSTextAlignment;

Swift:

enum NSTextAlignment : Int {
    case Left
    case Center
    case Right
    case Justified
    case Natural
}

来源

Answer 4

label.textAlignment = NSTextAlignmentCenter;

请参阅 UILabel 文档

Answer 5

如果你有一个多行 UILabel 你应该使用 NSMutableParagraphStyle

   yourLabelName.numberOfLines = 0
   let paragraphStyle = NSMutableParagraphStyle()
   paragraphStyle.alignment = .Center

   let attributes : [String : AnyObject] = [NSFontAttributeName : UIFont(name: "HelveticaNeue", size: 15)!, NSParagraphStyleAttributeName: paragraphStyle]

   let attributedText = NSAttributedString.init(string: subTitleText, attributes: attributes)
   yourLabelName.attributedText = attributedText

Answer 6

在 Swift 3 及更高版本中应该是

yourlabel.textAlignment = NSTextAlignment.center

Answer 7

在斯威夫特4：

 let paragraphStyle = NSMutableParagraphStyle()
 paragraphStyle.alignment = NSTextAlignment.center

 // in Swift 4.2
 let attributedString = NSMutableAttributedString(string: "Your String", attributes:[NSAttributedString.Key.paragraphStyle:paragraphStyle])

 // in Swift 4.1--
 let attributedString = NSMutableAttributedString(string: "Your String", attributes: [NSAttributedStringKey.paragraphStyle:paragraphStyle])

 let yourLabel = UILabel()
 yourLabel.attributedText = attributedString

Answer 8

Yourlabel.textAlignment = UITextAlignmentCenter;