相关疑难解决方法(0)

我在iOS 10.3发布之前使用过这行代码,并且工作正常.

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)];

但是现在它停止了工作,有没有其他方法来进行击球？