iOS：有没有办法伪造用户的语言环境？ [英] iOS: Is there any way to fake the user's locale?
问题描述
我有兴趣允许我的用户选择我的应用程序显示给他们的语言/语言环境。我已经想出如何加载正确的包，选择正确的字符串文件等。但是，我仍然使用一些系统项目似乎无法控制。例如，切换控件。
I'm interested in allowing my users to choose the language / locale my app appears to them in. I have figured out how to load the right bundle, choose the correct strings files, etc. However, some system items I still seem to have no control over. Switch controls, for example.
我有什么办法告诉系统这个应用程序现在应该使用特定语言，而不是用户当前的系统设置吗？
Is there any way for me to tell the system that this app should now behave in a specific language, rather than the user's current system setting?
推荐答案
最简单的方法是通过 NSUserDefaults ：区域设置由 AppleLanguages 中的第一个匹配项确定（语言ID数组）;您的应用只能为您的应用覆盖这些默认值。要检查它是否被您的应用覆盖，您可以使用类似 [defaults persistentDomainForName：[[NSBundle mainBundle] bundleIdentifier]] objectForKey：@AppleLocale] 。要删除覆盖，请使用 -removeObjectForKey：。
The least hacky way is via NSUserDefaults: The locale is determined by AppleLocale (the locale ID as a string) and the language is determined by the first match in AppleLanguages (an array of language IDs); your app can override these defaults for your app only. To check if it's overridden by your app, you can use something like [defaults persistentDomainForName:[[NSBundle mainBundle] bundleIdentifier]] objectForKey:@"AppleLocale"]. To remove the override, use -removeObjectForKey:.
无论您采用哪种方式，您都可能需要更改语言时重新启动应用; OS X和iOS应用程序根本不是为了在运行时更改语言而设计的（在OS X上，只有新推出的应用程序才能看到语言变化;在iOS上，系统会杀死所有应用程序以更改语言）。
Whichever way you do it, you'll probably have to relaunch the app when changing languages; OS X and iOS apps simply aren't designed to change language at runtime (on OS X, only newly launched apps see the language change; on iOS the system kills all apps to change language).
我添加了此功能，使开关语言更易于开发/测试;我不知道这是否会使App Store审核流程失败。
I added this feature to make switching languages easier for development/testing; I have no idea whether this will fail the App Store review process.
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