iOS 自定义一个Label上显示不同大小不同颜色的字符串

String *balance =@"888888";

NSMutableAttributedString *aString = [[NSMutableAttributedString alloc]initWithString:[NSString stringWithFormat:@"账户余额: %@元",balance]];

[aString addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor]range:NSMakeRange(0,1)];

[aString addAttribute:NSForegroundColorAttributeName value:[UIColor yellowColor]range:NSMakeRange(1,1)];

[aString addAttribute:NSForegroundColorAttributeName value:[UIColor orangeColor]range:NSMakeRange(2,1)];

[aString addAttribute:NSForegroundColorAttributeName value:[UIColor purpleColor]range:NSMakeRange(3,1)];

[aString addAttribute:NSForegroundColorAttributeName value:[UIColor redColor]range:NSMakeRange(6, balance.length)];

[aString addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:15]range:NSMakeRange(6, balance.length)];

aLab.attributedText= aString;

[self.view addSubview:aLab];

效果如图: