目标C / iPhone：如何提取当前区域的实际unicode日期格式字符串？ [英] Objective C / iPhone: How do I extract the actual unicode date format strings for the current region?

问题描述

我是全新的客观c和iphone开发，所以请温柔（刚开始看代码今晚第一次）。

I am completely new to objective c and iphone development, so please be gentle (just started looking at the code for the first time tonight).

根据这个网站：
http://iphonedevelopertips.com/cocoa/date-formatter-examples .html

有一个类处理格式化，它将一组常量/枚举（例如NSDateFormatterShortStyle）传递给setDateStyle属性/方法

there is a class that handles formatting, which takes in a set of constants/enums (e.g. NSDateFormatterShortStyle) to the "setDateStyle" property/method.

NSDateFormatter知道要检索适当的区域设置特定的日期格式。我想要的是能够根据用户对区域格式的选择来检索默认格式。我有一种感觉存储在NSLocale中，但似乎没有任何可以检索格式字符串的东西。

Somehow the NSDateFormatter knows to retrieve the proper locale-specific date format. What I want is to be able to retrieve the default formats based on the user's choice of region format. I have a feeling it is stored in NSLocale, but that does not seem to expose anything that will retrieve the format strings.

有没有办法提取格式？它必须在记忆中;我希望检索机制暴露在某个地方。

Is there a way to extract the formats? It has to be in memory somewhere; I'm hoping the retrieval mechanism is exposed somewhere.

我在几个地方看过（iphone dev指南，stackoverflow和random iphone帮助网站），但我得到的唯一答案是如何从自定义格式创建NSDate的一个教训。

I've looked in several places (iphone dev guide, stackoverflow, and random iphone help sites), but the only answers I get are a lesson on how to create an NSDate from a custom format.

提前感谢。

推荐答案

NSDateFormatter *df = [[NSDateFormatter alloc] init];
[df setDateStyle:NSDateFormatterShortStyle];
NSString *dateFormat = [df dateFormat];
NSLog(@"Date format: %@", dateFormat);
[df release];

只是在OS X上测试，但这也应该在iOS中运行。

Just tested on OS X but this should also work in iOS.

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