Android Studio提示「未在jp中翻译」问题求助（无values-ja文件夹）

Hey there! I totally get how confusing this warning can be—you didn’t touch anything related to Japanese, yet Android Studio keeps nagging you about missing translations. Let’s break down why this happens and how to fix it.

Common Reasons for the Warning #

1. Third-party dependencies include Japanese resources
   Most popular libraries (like Material Components, Google Play Services, or open-source SDKs) come bundled with multi-language resources by default. Even if you don’t have any values-ja folders in your project, Android Studio’s lint tool checks all resources in your app—including those from dependencies.

2. Lint check configuration defaults to include Japanese
   Android Studio’s built-in lint rules might have Japanese enabled as a target language for translation checks, even if you never explicitly set it up.

3. Stale IDE cache or indexes
   Sometimes a simple Clean/Rebuild isn’t enough to clear out old cache data that’s causing false warnings.

Step-by-Step Fixes #

1. Restrict Resources to Your Target Languages

The most effective fix is to tell Gradle to only keep the languages you actually need, stripping out unused language resources from dependencies. Add this to your Module-level build.gradle (the one under app/):

android {
    defaultConfig {
        // Replace with your target languages (e.g., Chinese and English)
        resConfigs "zh-rCN", "en"
    }
}

After adding this, run a Rebuild Project—this will remove all unlisted language resources (including Japanese) from your app, and the warning should disappear.

2. Disable Japanese Translation Checks in Lint

If you don’t want to modify your dependencies, you can adjust the lint rules to ignore Japanese translation warnings:

• Create or edit a lint.xml file in your project’s root directory with this content:

  <?xml version="1.0" encoding="UTF-8"?>
  <lint>
      <!-- Ignore missing translations specifically for Japanese -->
      <issue id="MissingTranslation">
          <ignore locales="ja" />
      </issue>
  </lint>
  

• Alternatively, go to Android Studio Settings > Editor > Inspections > Android > Lint > Translation Issues, find Missing Translation, and remove "ja" from the list of checked locales.

3. Clear IDE Cache and Restart

Sometimes stale indexes cause weird warnings. Try this:

• Go to File > Invalidate Caches...
• Select "Invalidate and Restart"
• Once Android Studio reboots, rebuild your project.

Verify the Fix #

After trying any of these steps, check the Messages or Problems panel in Android Studio—the "Not translated in ja" warning should no longer appear.

内容的提问来源于stack exchange，提问作者girin