IOS UILabel文字添加下划线与中划线

• 添加下划线代码

    UILabel * underlab = [[UILabel alloc] initWithFrame:CGRectMake(20, 100, 200, 40)];
    [self.view addSubview:underlab];
    //添加下划线
    NSDictionary * underAttribtDic  = @{NSUnderlineStyleAttributeName:[NSNumber numberWithInteger:NSUnderlineStyleSingle],NSForegroundColorAttributeName:[UIColor redColor]};
    NSMutableAttributedString * underAttr = [[NSMutableAttributedString alloc] initWithString:@"12432" attributes:underAttribtDic];
    underlab.attributedText = underAttr;

效果图如下： under_line.png

• 添加中划线代码

    UILabel * centerLab = [[UILabel alloc] initWithFrame:CGRectMake(20, 160, 200, 40)];
    [self.view addSubview:centerLab];
    //添加中划线
    NSDictionary * centerAttribtDic = @{NSStrikethroughStyleAttributeName:[NSNumber numberWithInteger:NSUnderlineStyleSingle],NSForegroundColorAttributeName:[UIColor redColor]};
    NSMutableAttributedString * centerAttr = [[NSMutableAttributedString alloc] initWithString:@"12432" attributes:centerAttribtDic];
    centerLab.attributedText = centerAttr;

效果图如下： center_line.png