iOS开发 - 给Label加下划线、中划线

个人博客: LiCheng的博客

引言:

当我们在做一些购物类APP或者是商品展示类的APP时，我们经常会遇到某种商品打折优惠或者抢购的场景。并且为了吸引客户，商家一般把打折商品的现价和原价同时显示出来，进行对比，此时就出现了为展示原价的label添加中划线或者是下划线的需求。
我们参考一下驴妈妈的首页：

驴妈妈首页－中划线

下面就直接上代码了：

添加中划线:

  UILabel * strikeLabel = [[UILabel alloc] initWithFrame:(CGRectMake(10, 10, 50, 30))];
  NSString *textStr = [NSString stringWithFormat:@"%@元", primeCost];

  //中划线
  NSDictionary *attribtDic = @{NSStrikethroughStyleAttributeName: [NSNumber numberWithInteger:NSUnderlineStyleSingle]};
  NSMutableAttributedString *attribtStr = [[NSMutableAttributedString alloc]initWithString:textStr attributes:attribtDic];
        
  // 赋值
  strikeLabel.attributedText = attribtStr;

  [self.view addSubview:strikeLabel];

添加下划线:

  UILabel *underlineLabel = [[UILabel alloc] initWithFrame:(CGRectMake(10, 10, 50, 30))];
  NSString *textStr = [NSString stringWithFormat:@"%@元", primeCost];

  // 下划线
  NSDictionary *attribtDic = @{NSUnderlineStyleAttributeName: [NSNumber numberWithInteger:NSUnderlineStyleSingle]};
  NSMutableAttributedString *attribtStr = [[NSMutableAttributedString alloc]initWithString:textStr attributes:attribtDic];

  //赋值
  underlineLabel.attributedText = attribtStr;
  
  [self.view addSubview:underlineLabel];

效果如图所示：

效果图

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GitHub: https://github.com/LiCheng244/LCUtils
个人博客: http://www.licheng244.com/

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