Question iOS: Localization uses English always, regardless of system language

Unity 2019.4.20f1, Localization 1.0.4, Addressables 1.19.9

Running my game on iOS, where the system language is set to German, causes the Localization system to detect it as English. It does work on Android though. Where could I start looking to figure out why that is?

Running this code:

Code (CSharp):

1. yield return LocalizationSettings.InitializationOperation;
2. yield return LocalizationSettings.StringDatabase.PreloadOperation;
3. yield return LocalizationSettings.SelectedLocaleAsync;
4.        
5. Debug.LogFormat("Application: {0}", Application.systemLanguage);
6. Debug.LogFormat("Localization: {0}", LocalizationSettings.SelectedLocale.Identifier.Code);

Outputs on iOS:

Code (CSharp):

1. Application: German
2. Localization: en

Here is my Localization setup:

 

Thank you for the reply.

How can I make my iOS app select the language that's selected in iOS, rather than English? Unfortunately, I can't wait for a Localization package update, I need to find a workaround as soon as possible.

In the iOS language settings, it uses German (Deutsch) for both, system and preferred language, yet the Localization system still selects English:

 

Thank you for the reply.

What's weird is that

UnityEngine.Application.systemLanguage

returns the correct language, but it seems the Localization system doesn't pick it up.

On the other hand, what I found in the Localization code is that the

SystemLocaleSelector

first tries to get the locale from

CultureInfo.CurrentUICulture

and only attempts to use

UnityEngine.Application.systemLanguage

in case the CurrentUICulture locale wasn't found.

Perhaps

CultureInfo.CurrentUICulture

returns English on iOS always, regardless of the actual system or preferred language setting.

 

FYI: The CultureInfo seems incorrect on Android when using Hindi as system language. The Hindi two-letter-iso would be

hi

, but it returns

iv

. Is this a known Unity/Mono bug?

Code (CSharp):

1. CurrentCulture.EnglishName: Invariant Language (Invariant Country)
2. CurrentCulture.TwoLetterISO: iv
3. CurrentCulture.ThreeLetterISO: IVL
4.  
5. CurrentUICulture.EnglishName: Invariant Language (Invariant Country)
6. CurrentUICulture.TwoLetterISO: iv
7. CurrentUICulture.ThreeLetterISO: IVL
8.  
9. Application.systemLanguage: Unknown

 

Thank you for the quick reply, much appreciated!

 

I'm giving it another shot:
(Case 1376786) CultureInfo returns "Invariant Language" instead of the actual language

 

Was this bug fixed? I have a similar issue with WebGL build.

 

I am experiencing the same issue on macOS Ventura 13.2.1, using Unity 2021.3.27f1 Personal.
I want the display language to be Japanese when the system language is Japanese, and English otherwise.
However, even when Application.systemLanguage is Japanese, LocalizationSettings.SelectedLocale.Identifier always remains 'en'.
I haven't yet tested on platforms other than macOS.

Is there any way to ensure the locale matches the system language correctly?

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.Localization.Settings;
3. using TMPro;
4. using UnityEngine.ResourceManagement.AsyncOperations;
5. using UnityEngine.Localization;
6.  
7. public class VersionAndLocalTextUI : MonoBehaviour
8. {
9.     [SerializeField]
10.     TextMeshProUGUI m_label;
11.  
12.     void Start()
13.     {
14.         LocalizationSettings.SelectedLocaleAsync.Completed += OnLocaleSelectionCompleted;
15.     }
16.  
17.     void OnLocaleSelectionCompleted(AsyncOperationHandle<Locale> handle)
18.     {
19.         UpdateVersionAndLocaleText();
20.     }
21.  
22.     void UpdateVersionAndLocaleText()
23.     {
24.         string versionString = Application.version;
25.         SystemLanguage systemLang = Application.systemLanguage;
26.         var localeIdentifier = LocalizationSettings.SelectedLocale.Identifier;
27.         m_label.text = $"{versionString}\nsystemLanguage:{systemLang}\nselectedLocale:{localeIdentifier.Code}";
28.     }
29. }
30.  

 

Thank you for your response.
I updated the Localization to version 1.4.4 by modifying the manifest.json file. I created a macOS build and ran it, but the result was the same.
Even though Application.systemLanguage is Japanese, LocalizationSettings.SelectedLocale.Identifier is still 'en'.

 

I submitted a bug report.