如何将整数转换为objective-c中的相应单词？ [英] How do I convert an integer to the corresponding words in objective-c?

问题描述

在iOS上的Objective-C中是否有一种方法可以将整数作为文本拼出？

Is there a way in Objective-C on iOS to spell out an integer number as text?

例如，如果我有

NSInteger someNumber = 11242043;

我想知道一些函数，以便返回一个类似于十一二百四十的字符串两千四十三。

I would like to know some function so that would return a string similar to "eleven million two hundred forty two thousand forty three."

推荐答案

Apple为许多数据类型内置了许多方便的格式化功能。称为格式化程序，它们可以将对象转换为字符串表示形式。

Apple has a lot of handy formatting functionality built in for many data types. Called a "formatter," they can convert objects to/from string representations.

对于您的情况，您将使用NSNumberFormatter，但如果您有一个整数，则需要首先将其转换为NSNumber。见下面的例子。

For your case, you will be using NSNumberFormatter, but if you have an integer you need to convert it to an NSNumber first. See below example.

NSInteger anInt = 11242043;
NSString *wordNumber;

//convert to words
NSNumber *numberValue = [NSNumber numberWithInt:anInt]; //needs to be NSNumber!
NSNumberFormatter *numberFormatter = [[NSNumberFormatter alloc] init];
[numberFormatter setNumberStyle:NSNumberFormatterSpellOutStyle];
wordNumber = [numberFormatter stringFromNumber:numberValue];
NSLog(@"Answer: %@", wordNumber);
// Answer: eleven million two hundred forty-two thousand forty-three

如果你想要了解有关格式化程序的更多信息：
https://developer.apple.com/library/content/documentation/General/Conceptual/Devpedia-CocoaApp/Formatter.html

If you'd like to learn more about formatters: https://developer.apple.com/library/content/documentation/General/Conceptual/Devpedia-CocoaApp/Formatter.html

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