label显示不同大小、颜色的字符串

UILabel *l = [[UILabel alloc] initWithFrame:CGRectMake(20, 400, 200, 30)];

    //定义字符串 NSMutableAttributedString类型可以方便改变特定的字符

    NSMutableAttributedString *attributeString = [[NSMutableAttributedString alloc] initWithString:@"This is xiaoming"];

    //前2个文字是红色

    

   

    [attributeString addAttributes:@{NSForegroundColorAttributeName:[UIColor redColor],NSFontAttributeName:[UIFont systemFontOfSize:30]} range:NSMakeRange(0, 1)];

    

    [attributeString addAttributes:@{NSForegroundColorAttributeName:[UIColor greenColor]} range:NSMakeRange(2, 10)];

    //设置属性文字

    l.attributedText = attributeString;

    [self.view addSubview:l];