NSMutableAttributedString's attribute NSStrikethroughStyleAttributeName doesn't work correctly in iOS8

Question

I have a mutable attributed string without NSStrikethroughStyleAttributeName attribute like this:

NSMutableAttributedString *str1 = [[NSMutableAttributedStri         


        

Answer 1

When you add NSStrikethroughStyleAttributeName, you should also add NSBaselineOffsetAttributeName, which is set to 0. And in swift, you should use the rawValue of NSUnderlineStyle.

Answer 2

When you are not starting the index from 0, try this:

NSMutableAttributedString *attributedStr = [[NSMutableAttributedString alloc] initWithString:@"Hello"];
[attributedStr addAttributes:@{NSStrikethroughStyleAttributeName : @(NSUnderlineStyleSingle)} range:NSMakeRange(1, str.length)];
[attributedStr addAttributes:@{NSStrikethroughStyleAttributeName : @(NSUnderlineStyleNone)} range:NSMakeRange(0, 1)];

Answer 3

I see the same issue and changing NSStrikethroughStyleAttributeName's value to NSUnderlineStyleNone doesn't fix it. Sure seems like iOS 8 bug.

Answer 4

On iOS8.1.1 we have more problems with setting NSMutableAttributedString, like with NSStrikethroughStyleAttributeName.

If your attributes are not changing try this and it will be.

I started reasoning by the UILabel that is spirit to chaneger attributes, so if we assume that the NSStrikethroughStyleAttributeName not initialized the label text so we will need the initialize it .

What I do is initializing mutableAttributedString by a none NSStrikethroughStyleAttributeName and change this attribute to highlight: result is:

 

NSMutableAttributedString * string = [[NSMutableAttributedString alloc] initWithString: myString attributes: @ {NSStrikethroughStyleAttributeName: @ (NSUnderlineStyleNone)}];
             [string addAttributes: @ {NSStrikethroughStyleAttributeName: @ (NSUnderlineStyleSingle)} range: [myString rangeOfString: mySubString]];
[MyLabel setAttributedText: string];

effective result <= iOS8.1.1

Answer 5

NSMutableAttributedString *str2 = [[NSMutableAttributedString alloc] initWithString:@"bbbb" attributes:@{NSStrikethroughStyleAttributeName:[NSNumber numberWithInteger:NSUnderlineStyleNone]}];

it should help

Answer 6

Fix for the bug in iOS8: Strike Through first letter of the string with clear color and then Strike through the text in which ever range you want.