创建具有下划线的文字

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    [self addUnderLine];
    
}
#pragma -mark -functions
//添加下划线
-(void)addUnderLine
{
    //UILabel
    UILabel *label=[[UILabel alloc]initWithFrame:CGRectMake(50, 100, 200, 200)];
    label.backgroundColor=[UIColor redColor];
    [self.view addSubview:label];
    
    //显示下划线
    NSDictionary *attribtDic = @{NSStrikethroughStyleAttributeName: [NSNumber numberWithInteger:NSUnderlineStyleSingle]};
    NSMutableAttributedString *attribtStr = [[NSMutableAttributedString alloc]initWithString:@"  价格：40" attributes:attribtDic];
    label.attributedText = attribtStr;
}