UILabel添加删除线，类似团购效果

NSString *str = @"62元/套";

NSMutableAttributedString *aStrM = [[NSMutableAttributedStringalloc] initWithString:str];

[aStrM addAttribute:NSStrikethroughStyleAttributeNamevalue:@(NSUnderlineStyleSingle |NSUnderlinePatternSolid)range:NSMakeRange(0, str.length)];

[aStrM addAttribute:NSStrikethroughColorAttributeNamevalue:[UIColorlightGrayColor] range:NSMakeRange(0, str.length)];

self.label.attributedText = aStrM;