How do you programmatically center the alignment of a text label for iOS?

开发者_Go百科I want to set the alignment of a text label, how can I do that?

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I think there are the answers who helped you out. The correct way to do this is:

yourLabelName.textAlignment = NSTextAlignmentCenter;

for more documentation you can read this: https://developer.apple.com/documentation/uikit/uilabel

In Swift :-

yourLabelName.textAlignment = .center

Here .center is NSTextAlignment.center

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Here you are,

yourLabel.textAlignment = UITextAlignmentCenter

EDIT

if you target above iOS6 use NSTextAlignmentCenter as UITextAlignmentCenter is depreciated

Hope it helps.

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This has changed as of iOS 6.0, UITextAlignment has been deprecated. The correct way to do this now is:

yourLabel.textAlignment = NSTextAlignmentCenter;

Here is the NSTextAlignment enumerable that gives the options for text alignment:

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
}

Source

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label.textAlignment = NSTextAlignmentCenter;

see UILabel documentation

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If you have a multiline UILabel you should use a 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

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In Swift 3 and beyond it should be

yourlabel.textAlignment = NSTextAlignment.center

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in swift 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

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Yourlabel.textAlignment = UITextAlignmentCenter;