iOS-UILabel加线

NSAttributedString *attrStr =[[NSAttributedString alloc]initWithString:[NSString stringWithFormat:@"¥%@", resultModel.originalprice]attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:],NSForegroundColorAttributeName:[UIColor lightGrayColor],
NSStrikethroughStyleAttributeName:@(NSUnderlineStyleSingle|NSUnderlinePatternSolid),
NSStrikethroughColorAttributeName:[UIColor lightGrayColor]
}
];
[self.secondPrice setAttributedText:attrStr];