NSMutableAttributedString 富文本删除线的用法

#import <UIKit/UIKit.h>

    //价格
    NSString *priceStr = @"99元 剁手价66元";
    NSMutableAttributedString *priceString = [[NSMutableAttributedString alloc] initWithString:priceStr];
    [priceString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:12.0f] range:NSMakeRange(, )];
    [priceString addAttribute:NSStrikethroughStyleAttributeName value:[NSNumber numberWithInteger:NSUnderlineStyleSingle] range:NSMakeRange(, )];
    [priceString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:14.0f] range:NSMakeRange(, )];
    [priceString addAttribute:NSForegroundColorAttributeName value:[UIColor colorWithNumber:] range:NSMakeRange(, )];
    priceLabel.attributedText = priceString;