Objective-C:如何将字符串格式化为 $ Price [英] Objective-C: How to format string as $ Price

问题描述

它们是一种将字符串格式化为 $ 价格的内置方式，例如12345.45 转换为 $12,345.45?

Is their a built-in way of formatting string as $ price, e.g. 12345.45 converted to $12,345.45?

推荐答案

假设您使用的是 Cocoa(或只是 Foundation)，您可以使用 NSNumberFormatter 并将其样式设置为货币:

Assuming you are using Cocoa (or just Foundation), you can use NSNumberFormatter and set its style to currency:

NSNumberFormatter *formatter = [[NSNumberFormatter alloc] init];
[formatter setNumberStyle:NSNumberFormatterCurrencyStyle];
... = [formatter stringFromNumber:number];

默认情况下，它使用您系统的区域设置，但您可以更改它以及许多其他属性，请参阅 NSNumberFormatter API 文档.

By default it uses the locale of your system, but you can change that and lots of other properties, see the NSNumberFormatter API docs.

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