如何以编程方式为iOS的文本标签对齐居中？

Question

我想设置文本标签的对齐方式，我该怎么做？

Answer 1

我认为有答案帮助了你。正确的方法是：

yourLabelName.textAlignment = NSTextAlignmentCenter;

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

在斯威夫特： -

yourLabelName.textAlignment = .center

此处.center为NSTextAlignment.center

Answer 2

你在这里，

yourLabel.textAlignment = UITextAlignmentCenter

修改

如果您定位在iOS6以上，请使用NSTextAlignmentCenter，因为UITextAlignmentCenter已弃用

希望它有所帮助。

Answer 3

从iOS 6.0开始，这已发生变化UITextAlignment has been deprecated。现在正确的做法是：

yourLabel.textAlignment = NSTextAlignmentCenter;

这是可枚举的NSTextAlignment，它提供了文本对齐的选项：

目标-C：

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

夫特：

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

Source

Answer 4

label.textAlignment = NSTextAlignmentCenter;

请参阅UILabel documentation

Answer 5

如果您有多行UILabel，则应使用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及更高版本中它应该是

yourlabel.textAlignment = NSTextAlignment.center

Answer 7

快速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;