blocks|key|602155|text|我一直在做的事情：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|602156|在Localizable.strings文件中添加一个字符串条目。我总是使用密钥"lang"="de";+(或"lang"="en"等)。|offset|length|style|CODE|602157|然后，您可以通过在NSLocalizedString(@"lang",+@"")上添加该语言来在NSURLRequest中使用它|602158|使用该方法，您可以完全控制将发送给您的后端的内容。|602159|entityMap^0|0|14|C|1J|B|0|9|V|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@$D|P|E|Q|F|G]|$D|R|E|S|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|T|8|@$D|U|E|V|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|W|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|M|$]]

What i always do:

Add a string entry into the Localizable.strings files.
I always use the key <code>"lang"="de";</code> (or <code>"lang"="en"</code>, etc.).

Then you can use it in your NSURLRequest by adding the language over <code>NSLocalizedString(@"lang", @"")</code>

With that method you have absolute control what is going to be sent to you backend.

blocks|key|386283|text|当用户更改设备语言时，应用程序语言会发生变化，您可以从NSUserDefaults获取它(我会告诉您如何更改)，除非有一个选项可以在应用程序内部更改语言，然后您可以轻松保存当前使用的语言，并随时将其发送到服务器。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|386284|entityMap^0|R|E|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

The app language will change when the user change the device language and you can get it from the <code>NSUserDefaults</code> (i will show you how if you want to ) unless there are an option to change the language inside the app then you can easy save the current used language and send it to the server when ever you want.

blocks|key|602261|text|您可以使用NSBundle类的preferredLocalizations方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|602262|NSString+*currentLocalization+=+[[[NSBundle+mainBundle]+preferredLocalizations]+objectAtIndex:0];|code-block|syntax|javascript|602263|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

You may use the preferredLocalizations method of the NSBundle class:

<pre><code>NSString *currentLocalization = [[[NSBundle mainBundle] preferredLocalizations] objectAtIndex:0];
</code></pre>

blocks|key|386388|text|公认的答案是一种变通方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|386389|关于设备本身的语言首选项，您可以使用|386390|[NSLocale+preferredLanguages]|code-block|syntax|javascript|386391|这将为您提供系统的常规设置中定义的首选语言的有序数组。|386392|Cocoa+Touch框架将在加载应用程序的本地化资源时考虑此首选语言列表，并根据捆绑包中提供的翻译对其进行过滤。|386393|这个经过筛选和排序的本地化语言列表可以通过以下命令获得|386394|[[NSBundle+mainBundle]+preferredLocalizations]|386395|您的服务器请求应与此数组中的第一个值匹配，否则您的应用程序和服务器数据之间将出现语言不匹配。|386396|entityMap^0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|W|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|X|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|Y|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|Z|8|@]|9|@]|A|$]]|$1|O|3|P|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|Q|3|R|5|6|7|11|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|T|$]]

The accepted answer is a workaround.

Regarding language preferences in the device itself, you have the

<pre><code>[NSLocale preferredLanguages]
</code></pre>

which will give you an ordered array of the preferred languages as defined in the system's General Settings.

The Cocoa Touch framework will take this list of preferred languages into account when loading the app's localization resources and filter it according to the translations you provide in the bundle.

This filtered and ordered list of localized languages can be obtained with

<pre><code>[[NSBundle mainBundle] preferredLocalizations]
</code></pre>

Your server requests should match the first value in this array or you will have a language mismatch between app and server data.

blocks|key|386468|text|从iOS+13开始，可以为每个应用程序单独设置语言。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|386469|在WWDC19的“使用Xcode11创建出色的本地化体验”会议上，他们展示了两个用于确定应用程序用户设置的选项。|386470|获取当前运行的应用程序语言：|386471|Bundle.main.preferredLocalizations.first|code-block|syntax|javascript|386472|在给定外部语言代码列表的情况下获取最佳语言：|386473|let+availableLanguages+=+Server.requestLanguages()
Bundle.preferredLocalizations(from:+availableLanguages).first|386474|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|T|8|@]|9|@]|A|$I|J]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|H|7|V|8|@]|9|@]|A|$I|J]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Since iOS 13 the language can be set for each app individually.

In the session "Creating Great Localized Experiences with Xcode 11" at WWDC19 they showed two options for determining the user settings for the application.

Get the currently running application language:

<pre><code>Bundle.main.preferredLocalizations.first
</code></pre>

Get the best language, given an external language code list:

<pre><code>let availableLanguages = Server.requestLanguages()
Bundle.preferredLocalizations(from: availableLanguages).first
</code></pre>

The application that I'm working on supports 3 languages: English, French and German. 

How I can get the current application language (NOT the device language)?

The problem is that I have to get the current language of the application in order to send it with a request to the server and the respond should be in the right language. The device language is useless because if the user switch the os language to Italian, the app is running in English and I need to send english to the server.

Thanks

iOS:How to get current application language

服务器

我正在开发的应用程序支持3种语言:英语、法语和德语。如何获取当前应用程序语言(而不是设备语言)？问题是，我必须获取应用程序的当前语言，以便将其与请求一起发送到服务器，并且响应应该使用正确的语言。设备语言是无用的，因为如果用户将操作系统语言切换为意大利语，应用程序将以英语运行，而我需要将英语发送到服务器。谢谢

问iOS:如何获取当前应用程序语言
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