NSStrikethroughStyleAttributeName , How to strike out the string in iOS 10.3?

Question

I have used this line of code before release of iOS 10.3 ,and worked fine.

NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@\n%@",strMRP,strOffer]];

[attributeString addAttribute:NSFontAttributeName value:[UIFont boldSystemFontOfSize:12] range:NSMakeRange(0, strMRP.length)];

[attributeString addAttribute:NSFontAttributeName value:[UIFont boldSystemFontOfSize:15] range:NSMakeRange(strMRP.length, strOffer.length+1)];

[attributeString addAttribute:NSStrikethroughStyleAttributeName
                        value:[NSNumber numberWithInteger: NSUnderlineStyleDouble]
                        range:NSMakeRange(0,strMRP.length)];

But now it is stopped working ,is there any alternate way to do the strike out ?

So, what is the error exactly?... I have successfully reproduced your snippet in a swift playground (iOS 10.3) and works just fine. — Alladinian, Mar 28 '17 at 13:10
See for a possible solution here: http://stackoverflow.com/questions/42478697/swift-3-1-nssuperscript-in-nsattributedstring-not-working-as-expected/43074313 — koen, Apr 05 '17 at 16:29
Possible duplicate of [iOS 10.3: NSStrikethroughStyleAttributeName is not rendered if applied to a sub range of NSMutableAttributedString](https://stackoverflow.com/questions/43074652/ios-10-3-nsstrikethroughstyleattributename-is-not-rendered-if-applied-to-a-sub) — tommybananas, Oct 20 '17 at 15:08

Anbu.Karthik · Accepted Answer · 2017-06-19T04:38:11.237

8

it is the bug in iOS 10.3 , NSStrikethroughStyleAttributeName (any NSUnderlineStyle cases) is not working any more on iOS SDK 10.3.

if anyone found the updated answer related to this , please inform here, I will update my answer.

Product Version: 10.3

Created: 14-Mar-2017

Originated: 14-Mar-2017

Open Radar Link: http://www.openradar.appspot.com/31034683

Radar status is Currently Open state

you can see the alternate sample also here may be it useful.

edited Jun 19 '17 at 04:38

answered Mar 28 '17 at 13:13

Anbu.Karthik

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Not tested on a device, but it definitely works fine in an iOS playground (10.3) – Alladinian Mar 28 '17 at 13:19
@Alladinian - I agree your comment , I taken the link from open radar the Status: `Open` – Anbu.Karthik Mar 28 '17 at 13:20
@KishoreKumar - pardon – Anbu.Karthik Mar 28 '17 at 13:24
@Anbu.Karthik ?? – Kishore Kumar Mar 28 '17 at 13:30
@KishoreKumar - yes, absolutely, its is open state, may be next version it will be fix – Anbu.Karthik Mar 28 '17 at 13:33
@Anbu.Karthik so if any bug registered in open radar ,then it is accepted by apple ? – Kishore Kumar Mar 28 '17 at 13:34
@KishoreKumar - yes, bro, if it is closed or working the radar will be closed – Anbu.Karthik Mar 28 '17 at 13:35
happands me to , have a solution ? – Roei Nadam Apr 03 '17 at 05:48
@Kishore Kumar me to, this is the only way (i think). – Roei Nadam Apr 03 '17 at 12:30
[add this link in your answer](https://stackoverflow.com/a/43359207/1066828), but didn't tested yet... – Fahim Parkar Jun 16 '17 at 14:50

score 5 · Answer 2 · answered Apr 24 '17 at 17:50

5

I found one workaround on developer forum, which works for me. Adding of NSBaselineOffsetAttributeName to string attributes fixed this problem :)

answered Apr 24 '17 at 17:50

Anton Gaenko

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This works, thank you! Before, I tried some other suggested fixes and they didn't work. – Lukas Petr May 21 '17 at 12:02

score 4 · Answer 3 · answered Apr 20 '17 at 07:15

It work fine with

   NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@\n%@",strMRP,strOffer]];

[attributeString addAttribute:NSFontAttributeName value:[UIFont boldSystemFontOfSize:12] range:NSMakeRange(0, strMRP.length)];

[attributeString addAttribute:NSFontAttributeName value:[UIFont boldSystemFontOfSize:15] range:NSMakeRange(strMRP.length, strOffer.length+1)];

[attributeString addAttribute:NSBaselineOffsetAttributeName
                        value:[NSNumber numberWithInteger: NSUnderlineStyleNone]
                        range:NSMakeRange(0,strMRP.length)];
[attributeString addAttribute:NSStrikethroughStyleAttributeName
                        value:[NSNumber numberWithInteger: NSUnderlineStyleDouble]
                        range:NSMakeRange(0,strMRP.length)];

Piyush · Answer 4 · 2017-08-16T07:24:02.040

iOS 10.3 onward you need to add NSBaselineOffsetAttributeName.

NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"%@\n%@",strMRP,strOffer]];
[attributeString addAttribute:NSFontAttributeName value:[UIFont boldSystemFontOfSize:12] range:NSMakeRange(0, strMRP.length)];
[attributeString addAttribute:NSFontAttributeName value:[UIFont boldSystemFontOfSize:15] range:NSMakeRange(strMRP.length, strOffer.length+1)];
[attributeString addAttribute:NSBaselineOffsetAttributeName
                    value:[NSNumber numberWithInteger: NSUnderlineStyleNone]
                    range:NSMakeRange(0,strMRP.length)];
[attributeString addAttribute:NSStrikethroughStyleAttributeName
                    value:[NSNumber numberWithInteger: NSUnderlineStyleDouble]
                    range:NSMakeRange(0,strMRP.length)];

Once you add NSBaselineOffsetAttributeName then it works for single line, double line ect.

score 0 · Answer 5 · answered Mar 30 '17 at 13:57

As mentioned above, this is an iOS 10.3 bug.

We needed an immediate workaround, so just in case anyone is looking for hints: Our Label had attributes set through both NSMutableAttributedString as well as NSMutableParagraphStyle. The bug did not occur when using no / an "empty" paragraph style (instance without any properties set).

So in this scenario, omitting the paragraph style and working around the then missing paragraph properties resolved the issue for us.

score 0 · Answer 6 · answered Jun 06 '17 at 13:18

Just Use this :-

NSMutableAttributedString *costPrice = [[NSMutableAttributedString alloc] initWithString:[NSString stringWithFormat:@"₹ %@",strDetails]]; [costPrice addAttribute:NSBaselineOffsetAttributeName value:[NSNumber numberWithInteger: NSUnderlineStyleSingle] range:NSMakeRange(0,costPrice.length)];

This is temp solution . Hope it works

score 0 · Answer 7 · answered Jul 05 '17 at 10:29

***You can pass it to function & Enjoy !!!

func customString(currentprice:String,oldPrice:String) -> NSMutableAttributedString{
        // 1
        let NewString = currentprice + "  " + oldPrice

        let string = NewString as NSString
        let attributedString = NSMutableAttributedString(string: string as String)

        // 2
        let firstAttributes = [NSForegroundColorAttributeName: UIColor(red: 238/255, green: 140/255, blue: 84/255, alpha: 1),NSBaselineOffsetAttributeName:1]
        let secondAttributes = [NSForegroundColorAttributeName: UIColor.lightGrayColor(), NSStrikethroughStyleAttributeName: 1]

        // 3
        attributedString.addAttributes(firstAttributes, range: string.rangeOfString(currentprice))
        attributedString.addAttributes(secondAttributes, range: string.rangeOfString(oldPrice))

        return attributedString
    }

and use like:

YourUILabel.attributedText   = customString("300", oldPrice: "400")

NSStrikethroughStyleAttributeName , How to strike out the string in iOS 10.3?

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