label画横线

UILabel*textLabel=[[UILabel
alloc]initWithFrame:CGRectMake(20,
100,
200, 15)];

NSString*oldStr=@"¥1300 (";

NSString*newStr=@"1200 )";

NSString *price = [NSString
stringWithFormat:@"%@%@",oldStr,newStr];

NSMutableAttributedString *attri = [[NSMutableAttributedString
alloc]
initWithString:price];

[attri addAttribute:NSStrikethroughStyleAttributeName
value:@(NSUnderlinePatternSolid |
NSUnderlineStyleSingle)
range:NSMakeRange(oldStr.length,newStr.length-2)];

[attri addAttribute:NSStrikethroughColorAttributeName
value:[UIColor
redColor]
range:NSMakeRange(oldStr.length,newStr.length-2)];
[textLabel
setAttributedText:attri];