Apple
recently released iOS 10.3
version, before the use of NSMutableAttributedString
set the strikers do not show the
[attributedString addAttribute:NSStrikethroughStyleAttributeName value:@(NSUnderlineStyleSingle | NSUnderlinePatternSolid) range:NSMakeRange(length1 + 7, length2 + 5)];
Tried a lot of ways are not resolved, hoping to get everyone's help