如何使用\t [tab]运算符格式化列中的NSString？ [英] How can I use the \t [tab] operator to format a NSString in columns?

问题描述

我想找到一种格式化NSString的方法：

I would like to find a way to format a NSString like this:

Name:               John
Location:           Unknown
Type:               Unknown
Status:             Unknown

现在我正在使用这个代码可以做到，但结果完全不同：

Right now I'm using this code to do it but the result is quite different:

代码：

serializedValue = [serializedValue stringByAppendingFormat:@"%@:\t\t%@\n",title, value];

其中 title 是左栏和 value 是第二个。

Where title is the left column and value is the second one.

结果：

Name:       John
Location:       Unknown
Type:       Unknown
Status:     Unknown

现在，正如你所看到的，在我的情况下，总是添加一定数量的标签（\ t），2，这样做并不成功，因为左列较长，有些较短。我想知道是否有一种简单的方法可以做到这一点，我不知道。

Now, as you can see, adding always a constant number of tabs (\t), 2 in my case, doesn't do the trick, because some words in the left column are longer and some are shorter. I'm wondering if there is a simple way to do this that I'm not aware of.

推荐答案

NSString *titleColumn = [[NSString stringWithFormat:@"%@:", title] stringByPaddingToLength:20 withString:@" " startingAtIndex:0];
serializedValue = [serializedValue stringByAppendingFormat:@"%@%@", titleColumn, value];

顺便说一下，使用 NSMutableString for serializedValue 。

Btw, it would be more efficient to use an NSMutableString for serializedValue.

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