一个Label中显示不同的字体颜色

NSMutableAttributedString *string = [[NSMutableAttributedString alloc]initWithString:@"红色黑色蓝色绿色"];

    [string addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, 2)];

    

    [string addAttribute:NSForegroundColorAttributeName value:[UIColor blackColor] range:NSMakeRange(2, 2)];

    [string addAttribute:NSForegroundColorAttributeName value:[UIColor blueColor] range:NSMakeRange(4, 2)];

    [string addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(6, 2)];

    self.lab.attributedText = string;