Explanation of the return value of NSLocale.preferred Languages

Why is the language character obtained by NSLocale.preferred Languages sometimes “zh-Han-HK” and sometimes “zh-HK”? What kind of setting determines the value of this character. Thanks.

You can set this in Settings (Language & Region). The system may make additional decisions based on the the languages you declare in Settings.

I want to know under what circumstances will it return to 'zh-hant-hk', and when will it return to 'zh-hk'. Could you share some relevant documentation.

My colleague reminded me to look at this post, and I hope I am not too late to the party...

Would you mind to share how you get zh-HK as the language code? Specifically, the following information will help:

• Your system version.
• A screenshot of your system language and region settings. On iOS, it's at Settings > General > language & Region.

In our latest systems, if your system language is set to Traditional Chinese (Hongkong), the language code should be zh-Hant-HK; if it is set to Traditional Chinese, the code should be zh-Hant-US, assuming that the system region is set to United States.

I haven't seen h-HK, but there may be something historial that leads to the result you see, and I may be able to get to the bottom if you can share more information.

Best,
——
Ziqiao Chen
 Worldwide Developer Relations.