ios 如何创建带有删除线文本的 UILabel？

How can I create a UILabel with strikethrough text?

提问by Dev

I want to create a UILabelin which the text is like this

我想创建一个UILabel文本是这样的

How can I do this? When the text is small, the line should also be small.

我怎样才能做到这一点？当文字很小时，线条也应该很小。

回答by Paresh Navadiya

SWIFT 4 UPDATE CODE

SWIFT 4 更新代码

let attributeString: NSMutableAttributedString =  NSMutableAttributedString(string: "Your Text")
    attributeString.addAttribute(NSAttributedString.Key.strikethroughStyle, value: 2, range: NSMakeRange(0, attributeString.length))

then:

然后：

yourLabel.attributedText = attributeString

To make some part of string to strike then provide range

使字符串的某些部分敲击然后提供范围

let somePartStringRange = (yourStringHere as NSString).range(of: "Text")
attributeString.addAttribute(NSStrikethroughStyleAttributeName, value: 2, range: somePartStringRange)

---

---

Objective-C

目标-C

In iOS 6.0 >UILabelsupports NSAttributedString

在iOS 6.0 >UILabel支持NSAttributedString

NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:@"Your String here"];
[attributeString addAttribute:NSStrikethroughStyleAttributeName
                        value:@2
                        range:NSMakeRange(0, [attributeString length])];

Swift

迅速

let attributeString: NSMutableAttributedString =  NSMutableAttributedString(string: "Your String here")
attributeString.addAttribute(NSStrikethroughStyleAttributeName, value: 2, range: NSMakeRange(0, attributeString.length))

Definition:

定义：

- (void)addAttribute:(NSString *)name value:(id)value range:(NSRange)aRange

Parameters List:

Parameters List:

name: A string specifying the attribute name. Attribute keys can be supplied by another framework or can be custom ones you define. For information about where to find the system-supplied attribute keys, see the overview section in NSAttributedString Class Reference.

name：指定属性名称的字符串。属性键可以由另一个框架提供，也可以是您定义的自定义键。有关在哪里可以找到系统提供的属性键的信息，请参阅 NSAttributedString 类参考中的概述部分。

value: The attribute value associated with name.

value：与名称关联的属性值。

aRange: The range of characters to which the specified attribute/value pair applies.

aRange：指定的属性/值对适用的字符范围。

Then

然后

yourLabel.attributedText = attributeString;

---

---

For lesser than iOS 6.0 versionsyou need 3-rd party componentto do this. One of them is TTTAttributedLabel, another is OHAttributedLabel.

因为lesser than iOS 6.0 versions你需3-rd party component要这样做。其中一个是TTTAttributedLabel，另一个是OHAttributedLabel。

回答by Chris Trevarthen

In Swift, using the enum for single strikethrough line style:

在 Swift 中，使用枚举作为单个删除线样式：

let attrString = NSAttributedString(string: "Label Text", attributes: [NSStrikethroughStyleAttributeName: NSUnderlineStyle.StyleSingle.rawValue])
label.attributedText = attrString

Additional strikethrough styles (Remember to access the enum using .rawValue):

其他删除线样式（请记住使用 .rawValue 访问枚举）：

• NSUnderlineStyle.StyleNone
• NSUnderlineStyle.StyleSingle
• NSUnderlineStyle.StyleThick
• NSUnderlineStyle.StyleDouble

• NSUnderlineStyle.StyleNone
• NSUnderlineStyle.StyleSingle
• NSUnderlineStyle.StyleThick
• NSUnderlineStyle.StyleDouble

Strikethrough patterns (to be OR-ed with the style):

删除线模式（与样式进行 OR 运算）：

• NSUnderlineStyle.PatternDot
• NSUnderlineStyle.PatternDash
• NSUnderlineStyle.PatternDashDot
• NSUnderlineStyle.PatternDashDotDot

• NSUnderlineStyle.PatternDot
• NSUnderlineStyle.PatternDash
• NSUnderlineStyle.PatternDashDot
• NSUnderlineStyle.PatternDashDotDot

Specify that the strikethrough should only be applied across words (not spaces):

指定删除线应仅应用于单词（而不是空格）：

• NSUnderlineStyle.ByWord

• NSUnderlineStyle.ByWord

回答by Kjuly

I prefer NSAttributedStringrather than NSMutableAttributedStringfor this simple case:

我更喜欢NSAttributedString而不是NSMutableAttributedString这个简单的案例：

NSAttributedString * title =
    [[NSAttributedString alloc] initWithString:@"8"
                                    attributes:@{NSStrikethroughStyleAttributeName:@(NSUnderlineStyleSingle)}];
[label setAttributedText:title];

---

---

Constants for specifying both the NSUnderlineStyleAttributeNameand NSStrikethroughStyleAttributeNameattributes of an attributed string:

用于指定属性字符串的NSUnderlineStyleAttributeName和NSStrikethroughStyleAttributeName属性的常量：

typedef enum : NSInteger {  
  NSUnderlineStyleNone = 0x00,  
  NSUnderlineStyleSingle = 0x01,  
  NSUnderlineStyleThick = 0x02,  
  NSUnderlineStyleDouble = 0x09,  
  NSUnderlinePatternSolid = 0x0000,  
  NSUnderlinePatternDot = 0x0100,  
  NSUnderlinePatternDash = 0x0200,  
  NSUnderlinePatternDashDot = 0x0300,  
  NSUnderlinePatternDashDotDot = 0x0400,  
  NSUnderlineByWord = 0x8000  
} NSUnderlineStyle;  

回答by Purnendu roy

Strikethrough in Swift 5.0

Swift 5.0 中的删除线

let attributeString =  NSMutableAttributedString(string: "Your Text")
attributeString.addAttribute(NSAttributedString.Key.strikethroughStyle,
                                     value: NSUnderlineStyle.single.rawValue,
                                         range: NSMakeRange(0, attributeString.length))
self.yourLabel.attributedText = attributeString

It worked for me like a charm.

它对我来说就像一种魅力。

Use it as extension

将其用作扩展

extension String {
    func strikeThrough() -> NSAttributedString {
        let attributeString =  NSMutableAttributedString(string: self)
        attributeString.addAttribute(
            NSAttributedString.Key.strikethroughStyle,
               value: NSUnderlineStyle.single.rawValue,
                   range:NSMakeRange(0,attributeString.length))
        return attributeString
    }
}

Call like this

像这样打电话

myLabel.attributedText = "my string".strikeThrough()

UILabel extension for strikethrough Enable/Disable.

删除线启用/禁用的 UILabel 扩展。

extension UILabel {

func strikeThrough(_ isStrikeThrough:Bool) {
    if isStrikeThrough {
        if let lblText = self.text {
            let attributeString =  NSMutableAttributedString(string: lblText)
            attributeString.addAttribute(NSAttributedString.Key.strikethroughStyle, value: NSUnderlineStyle.single.rawValue, range: NSMakeRange(0,attributeString.length))
            self.attributedText = attributeString
        }
    } else {
        if let attributedStringText = self.attributedText {
            let txt = attributedStringText.string
            self.attributedText = nil
            self.text = txt
            return
        }
    }
    }
}

Use it like this :

像这样使用它：

   yourLabel.strikeThrough(btn.isSelected) // true OR false

回答by pekpon

SWIFT CODE

SWIFT代码

let attributeString: NSMutableAttributedString =  NSMutableAttributedString(string: "Your Text")
    attributeString.addAttribute(NSStrikethroughStyleAttributeName, value: 2, range: NSMakeRange(0, attributeString.length))

then:

然后：

yourLabel.attributedText = attributeString

Thanks to Prince answer;)

感谢王子回答;)

回答by Muhammad Asyraf

SWIFT 4

快速 4

    let attributeString: NSMutableAttributedString =  NSMutableAttributedString(string: "Your Text Goes Here")
    attributeString.addAttribute(NSAttributedStringKey.strikethroughStyle, value: NSUnderlineStyle.styleSingle.rawValue, range: NSMakeRange(0, attributeString.length))
    self.lbl_productPrice.attributedText = attributeString

Other method is to used String Extension
Extension

其他方法是使用字符串扩展
扩展

extension String{
    func strikeThrough()->NSAttributedString{
        let attributeString: NSMutableAttributedString =  NSMutableAttributedString(string: self)
        attributeString.addAttribute(NSAttributedStringKey.strikethroughStyle, value: NSUnderlineStyle.styleSingle.rawValue, range: NSMakeRange(0, attributeString.length))
        return attributeString
    }
}

Calling the function :Used it like so

调用函数：像这样使用它

testUILabel.attributedText = "Your Text Goes Here!".strikeThrough()

Credit to @Yahya- update Dec 2017
Credit to @kuzdu- update Aug 2018

归功于@Yahya - 2017 年 12 月更新
归功于 @kuzdu - 2018 年 8 月更新

回答by Ameet Dhas

You can do it in IOS 6 using NSMutableAttributedString.

您可以使用 NSMutableAttributedString 在 IOS 6 中做到这一点。

NSMutableAttributedString *attString=[[NSMutableAttributedString alloc]initWithString:@"8"];
[attString addAttribute:NSStrikethroughStyleAttributeName value:[NSNumber numberWithInt:2] range:NSMakeRange(0,[attString length])];
yourLabel.attributedText = attString;

回答by Karthickkck

Strike out UILabel text in Swift iOS. PLease try this it's working for me

在 Swift iOS 中删除 UILabel 文本。请试试这个它对我有用

let attributedString = NSMutableAttributedString(string:"12345")
                      attributedString.addAttribute(NSAttributedStringKey.baselineOffset, value: 0, range: NSMakeRange(0, attributedString.length))
                      attributedString.addAttribute(NSAttributedStringKey.strikethroughStyle, value: NSNumber(value: NSUnderlineStyle.styleThick.rawValue), range: NSMakeRange(0, attributedString.length))
                      attributedString.addAttribute(NSAttributedStringKey.strikethroughColor, value: UIColor.gray, range: NSMakeRange(0, attributedString.length))

 yourLabel.attributedText = attributedString

You can change your "strikethroughStyle" like styleSingle, styleThick,styleDouble

您可以更改“删除线样式”，例如 styleSingle、styleThick、styleDouble

回答by Vladimir Pchelyakov

Swift 5

斯威夫特 5

extension String {

  /// Apply strike font on text
  func strikeThrough() -> NSAttributedString {
    let attributeString = NSMutableAttributedString(string: self)
    attributeString.addAttribute(
      NSAttributedString.Key.strikethroughStyle,
      value: 1,
      range: NSRange(location: 0, length: attributeString.length))

      return attributeString
     }
   }

Example:

例子：

someLabel.attributedText = someText.strikeThrough()

回答by Micro

For anyone looking on how to do this in a tableview cell (Swift) you have to set the .attributeText like this:

对于任何想在 tableview 单元格 (Swift) 中执行此操作的人，您必须像这样设置 .attributeText：

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCellWithIdentifier("TheCell")!

    let attributeString: NSMutableAttributedString =  NSMutableAttributedString(string: message)
    attributeString.addAttribute(NSStrikethroughStyleAttributeName, value: 2, range: NSMakeRange(0, attributeString.length))

    cell.textLabel?.attributedText =  attributeString

    return cell
    }

If you want to remove the strikethrough do this otherwise it will stick around!:

如果您想删除删除线，请执行此操作，否则它会一直存在！：

cell.textLabel?.attributedText =  nil