NSAttributedString with strikethrough

Question

I'm trying to create an attributed string with a strikethrough, however, this simple task seems to be harder to figure out than I anticipated. Here is what I have currently (which is not working). Thanks for the help!

NSAttributedString *theTitle = [[[NSAttributedString alloc] initWithString:@"strikethrough text" attributes:[NSDictionary dictionaryWithObjectsAndKeys:[NSColor whiteColor], NSForegroundColorAttributeName, NSUnderlinePatternSolid, NSStrikethroughStyleAttributeName, nil]] autorelease];

Ole Begemann · Accepted Answer · 2013-01-06T18:39:20.697

20

First, the value for NSStrikethroughStyleAttributeName must be an NSNumber, not a simple integer. Second, I think you have to include NSUnderlineStyleSingle:

...:[NSDictionary dictionaryWithObjectsAndKeys:
      ..., 
      [NSNumber numberWithInteger:NSUnderlinePatternSolid | NSUnderlineStyleSingle], 
      NSStrikethroughStyleAttributeName, 
      nil]...

edited Jan 06 '13 at 18:39

answered Feb 11 '11 at 19:42

Ole Begemann

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This was very helpful. Thanks! Of note, you're missing a closing bracket to close out the `numberWithInteger:` message after `NSUnderlinePatternSolid | NSUnderlineStyleSingle` and before `, NSStrikethroughStyleAttributeName`. – morgant Jan 04 '13 at 22:26

Arnaud Nelissen · Answer 2 · 2015-12-05T16:24:01.937

17

You can also simply use:

NSAttributedString *theAttributedString;
theAttributedString = [[NSAttributedString alloc] initWithString:theString 
            attributes:@{NSStrikethroughStyleAttributeName:
            [NSNumber numberWithInteger:NSUnderlineStyleSingle]}];

Update :

Swift 2.0 version

let theAttributedString = NSAttributedString(string: theString, attributes: [NSStrikethroughColorAttributeName: NSUnderlineStyle.StyleSingle])

edited Dec 05 '15 at 16:24

answered Aug 19 '13 at 12:35

Arnaud Nelissen

1,082
11
18

2

This is wrong, you can't assign style into color attribute. `[NSStrikethroughColorAttributeName: NSUnderlineStyle.StyleSingle]` – Edward Anthony Sep 09 '17 at 06:46

score 3 · Answer 3 · edited Sep 24 '16 at 20:19

3

func addAttributes(attrs: [String : AnyObject], range: NSRange)

NSUnderlineStyleAttributeName: The value of this attribute is an NSNumber object containing an integer.

Since the NSUnderlineStyle enum's rawValue is Int Type, you should initialize a NSNumber Object with it

Swift2.1:

attrStr.addAttributes([NSStrikethroughStyleAttributeName: NSNumber(integer: NSUnderlineStyle.StyleSingle.rawValue)], range: NSMakeRange(x, y))

x is the location, the start of your text

y is the length of the text

edited Sep 24 '16 at 20:19

Sangram Shivankar

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answered Feb 24 '16 at 01:29

Shawn Foo

56
4

Range is not Working when i write `NSRangeMake(0, 4)` that doesn't work , if i write `NSRangeMake(0, theAttributedString.lenght)` that work , but my requirment to put horizontal line on only First four char on String , how can i do this .?? – Dhiru May 17 '17 at 06:52
There is a known bug in iOS 10.3 where the strike through attribute won't work if applied in a range. As a workaround you can do: `attrStr.addAttributes([NSBaselineOffsetAttributeName: NSNumber(integerLiteral: 0)], range: NSMakeRange(x, y))` – jdev Aug 31 '17 at 08:31

score 1 · Answer 4 · answered Jan 12 '21 at 10:54

Swift 4:

NSAttributedString(string: "test string", attributes: [.strikethroughStyle: NSUnderlineStyle.styleSingle.rawValue])

Swift 5:

NSAttributedString(string: "test string", attributes: [.strikethroughStyle: NSUnderlineStyle.single.rawValue])

Mind the fact that .strikethroughStyle and .underlineStyle expect an integer value (specifically an NSNumber), therefore we're using NSUnderlineStyle's .rawValue in the examples. (Setting NSUnderlineStyle causes unrecogognized selector exception)

NSAttributedString with strikethrough

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