label赋值属性字符串

直接上代码

UILabel *lab = [[UILabelalloc] init];

    lab.backgroundColor = [UIColorwhiteColor];

    lab.frame =CGRectMake(10.0,40.0, 400, 100);

    [self.viewaddSubview:lab];

    // 给label添加属性字符串

    NSMutableAttributedString *attStr = [[NSMutableAttributedStringalloc] initWithString:@"可变属性字符串例子，谢谢"];

    // 颜色

    [attStr addAttribute:NSForegroundColorAttributeNamevalue:[UIColorredColor] range:NSMakeRange(1,2)];

    // 字体

    [attStr addAttribute:NSFontAttributeNamevalue:[UIFontsystemFontOfSize:10.0]range:NSMakeRange(4,3)];

    // 下划线

    [attStr addAttribute:NSUnderlineStyleAttributeNamevalue:[NSNumbernumberWithInt:NSUnderlineStyleSingle]range:NSMakeRange(5,4)];

    lab.attributedText = attStr;

补充：

// 行间距设置

    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];

    [paragraphStyle setLineSpacing:20];

    [attStr addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [attStr length])];