Adding strikethrough to NSAttributedString in iOS 11 with Swift

Question

Having some issues getting strikethrough to work. Currently I'm doing the following:

theString.addAttributes([
        NSAttributedStringKey.strikethroughStyle: NSUnderlineStyle.styleSingle.rawValue, 
        NSAttributedStringKey.strikethroughColor: UIColor.white
    ], range: NSMakeRange(0, 1))

It's not showing any sort of strikethrough though. Any ideas? I can't seem to find anything that works.

Your code is working for me. Though only the first letter is getting the strikethrough given the range you have. Try different colors. Maybe you can't see the white strikethrough if the background is white. — rmaddy, Mar 21 '18 at 23:19
Show more relevant code. I tested in a playground without a label. — rmaddy, Mar 21 '18 at 23:45
There isn't really anything else relevant, using almost identical code to underline text works perfectly. Does strikethrough maybe only work in a textview and not a label? — eskimo, Mar 21 '18 at 23:46
Just used a label in a playground. Still working for me. Maybe a font issue or a colors issue. That's why you need to provide more details. — rmaddy, Mar 21 '18 at 23:48
Yeah it's working in a playground for me too. Lemme see if maybe it's the font I'm using? — eskimo, Mar 22 '18 at 00:00
Hrmmm, seems to be something with TTTAttributedLabel. I got it to work with kTTTStrikeOutAttributeName instead, but I can't set the color that way it seems :/ — eskimo, Mar 22 '18 at 00:22

score 12 · Answer 1 · answered Jul 27 '18 at 08:39

I use this to strike through a text in Xcode9/iOS11/Swift4 env

  let strokeEffect: [NSAttributedStringKey : Any] = [
        NSAttributedStringKey.strikethroughStyle: NSUnderlineStyle.styleSingle.rawValue,
        NSAttributedStringKey.strikethroughColor: UIColor.red,
    ]

   let strokeString = NSAttributedString(string: "text", attributes: strokeEffect)

score 6 · Answer 2 · answered Nov 14 '19 at 11:21

Swift 5.1

let attributedText : NSMutableAttributedString =  NSMutableAttributedString(string: "Your Text")
attributedText.addAttributes([
                NSAttributedString.Key.strikethroughStyle: NSUnderlineStyle.single.rawValue,
                NSAttributedString.Key.strikethroughColor: UIColor.lightGray,
                NSAttributedString.Key.font : UIFont.systemFont(ofSize: 12.0)
                ], range: NSMakeRange(0, attributedText.length))

score 4 · Answer 3 · answered Aug 04 '18 at 13:03

4

swift 4.1

attributedText.addAttributes([
NSAttributedStringKey.strikethroughStyle:NSUnderlineStyle.styleSingle.rawValue, NSAttributedStringKey.strikethroughColor:UIColor.black],
range: NSMakeRange(0, attributedText.length))

answered Aug 04 '18 at 13:03

Osman

1,496
18
22

score 1 · Answer 4 · edited Aug 26 '20 at 20:59

swift 4.2

    let mutPricesString : NSMutableAttributedString = NSMutableAttributedString()
    var attrPrice_1 : NSAttributedString = NSAttributedString()
    var attrPrice_2 : NSAttributedString = NSAttributedString()

    attrPrice_1 = NSAttributedString(string: "14000 KD", attributes:
            [NSAttributedString.Key.strikethroughStyle: NSUnderlineStyle.single.rawValue,
             NSAttributedString.Key.foregroundColor: UIColor.lightGray,
             NSAttributedString.Key.font: ARFont.Regular(fontSize: 15)])

    attrPrice_2 = NSAttributedString(string: " 12460 KD", attributes:
        [NSAttributedString.Key.foregroundColor: UIColor.black,
         NSAttributedString.Key.font: ARFont.Semibold(fontSize: 17)])

    mutPricesString.append(attrPrice_1)
    mutPricesString.append(attrPrice_2)
    
    lbl.attributedText = mutPricesString

ANSWER :

score 1 · Answer 5 · answered Jul 08 '20 at 09:39

Try this

func strikethrough(_ text:String) -> NSAttributedString{
        //strikethrough
        let range = (self as NSString).range(of: text)
        let attributedString = NSMutableAttributedString(string:self)
        attributedString.addAttribute(NSAttributedString.Key.strikethroughColor, value: UIColor.gray, range: range)
        attributedString.addAttribute(NSAttributedString.Key.strikethroughStyle, value: 2, range: range)
        
        return attributedString
}

label.attributedText = "Hello world".strikethrough("world")

Don't use hardcoded constants like "2". Use the actual library constant like the other answers do. — Robin Daugherty, Nov 29 '20 at 16:19

score 0 · Answer 6 · answered Apr 29 '18 at 11:20

0

I am sharing latest updates. For Swift4, iOS 11.3

    attributedText.addAttributes([ 
    NSStrikethroughStyleAttributeName: 
    NSUnderlineStyle.styleSingle.rawValue, 
    NSStrikethroughColorAttributeName: 
    UIColor.black], range: textRange)

answered Apr 29 '18 at 11:20

Alf Bae

546
6
10

Adding strikethrough to NSAttributedString in iOS 11 with Swift

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