直接看代码：

UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(10, 70, 300, 200)];

label.numberOfLines = 0;

label.backgroundColor = [UIColor colorWithRed:235/255.0 green:235/255.0 blue:235/255.0 alpha:1];

//------

NSMutableAttributedString *text = [[NSMutableAttributedString alloc] initWithString:@"1321313123211273127318273819273817381738713712837173812731837128371297319737131719371273187328193721731793\n"];

//设置字体颜色

[text addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, text.length)];

//设置缩进、行距

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

style.headIndent = 30;//缩进

style.firstLineHeadIndent = 0;

style.lineSpacing = 10;//行距

[text addAttribute:NSParagraphStyleAttributeName value:style range:NSMakeRange(0, text.length)];

//------

//------

NSMutableAttributedString *text2 = [[NSMutableAttributedString alloc] initWithString:@"eqeqeuqoeuquequeqeqwuequeqoueqowueqoueqoshfkahfksdafhkalhfkdshf"];

//设置字体颜色

[text2 addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(0, text2.length)];

//设置缩进、行距

NSMutableParagraphStyle *style2 = [[NSMutableParagraphStyle alloc] init];

style2.headIndent = 0;

style2.firstLineHeadIndent = 20;

style2.lineSpacing = 5;

[text2 addAttribute:NSParagraphStyleAttributeName value:style2 range:NSMakeRange(0, text2.length)];

//------

[text appendAttributedString:text2];

label.attributedText = text;

[self.view addSubview:label];