ios 实现价钱打折效果 数字上划横线

//.h 拖住一个label

@property (weak, nonatomic) IBOutlet UILabel *priceLabel;

//.m
NSMutableAttributedString * priceAttrString =[[NSMutableAttributedString alloc]initWithString:@"#1212.00"];

/**
 *  @author 李凯利, 16-09-13 14:09:10
 *  添加样式
 *  @param NSUnderlineStyleSingle 单线
 *
 *  @param range  需要划线的字符索引
 */
[priceAttrString addAttribute:NSStrikethroughStyleAttributeName value:@(NSUnderlinePatternSolid | NSUnderlineStyleSingle) range:NSMakeRange(0, priceAttrString.length)];
/**
 *  @author 李凯利, 16-09-13 14:09:27
 *
 *  添加属性文本
 */
self.priceLabel.attributedText = priceAttrString;

_priceLabel.textColor =[UIColor grayColor];