完全离线Windows电脑配置Android Studio Gradle插件的报错解决方法

Absolutely! You can totally fix this by either manually downloading the required Gradle plugin and transferring it to your offline machine, or copying the pre-cached files from another connected computer that already has the plugin set up. Let me break down both methods clearly:

方法1：从联网电脑复制Gradle缓存（最省心的方案） #

This is the most reliable way because it captures all the necessary dependencies, not just the main plugin jar. Here's what to do:

• On a connected Windows computer with Android Studio:
  1. Create a temporary Android project, and in its root build.gradle file, set the plugin version to 3.1.0:

     buildscript {
         dependencies {
             classpath 'com.android.tools.build:gradle:3.1.0'
         }
     }
     

  2. Sync the project—Android Studio will automatically download and cache the plugin and its matching Gradle distribution (Gradle 4.4, which is required for plugin 3.1.0).
  3. Locate the cached files:
     • Gradle plugin cache: Navigate to C:\Users\[Your Username]\.gradle\caches\modules-2\files-2.1\com.android.tools.build\gradle
     • Gradle distribution cache: Go to C:\Users\[Your Username]\.gradle\wrapper\dists\gradle-4.4-all
  4. Copy both entire directories to a USB drive or external storage.
• On your offline Windows computer:
  1. Paste the copied directories into the exact same paths (merge with existing folders if prompted—this won't overwrite unrelated files).
  2. Open your Android Studio project, confirm the root build.gradle uses the 3.1.0 plugin version, then click Sync Project with Gradle Files.

方法2：手动下载插件及依赖（适合没有现成缓存的情况） #

If you don't have access to another Android Studio setup, you can manually grab the required files from a Maven repository on a connected device:

1. On a connected computer, search for com.android.tools.build:gradle:3.1.0 in a Maven repository to find the relevant files.
2. Download the following core files:
   • gradle-3.1.0.jar (the main plugin file)
   • gradle-3.1.0.pom (metadata that defines the plugin's dependencies)
3. You'll also need to download all dependencies listed in the .pom file—this can get tedious, so the cache copy method is strongly preferred.
4. Transfer all downloaded files to your offline machine, then place them in the corresponding cache path: C:\Users\[Your Username]\.gradle\caches\modules-2\files-2.1\com.android.tools.build\gradle\3.1.0\[random hash folder] (create the hash-named folder if it doesn't exist).
5. Don't forget to download the Gradle 4.4 distribution zip, place it in C:\Users\[Your Username]\.gradle\wrapper\dists\gradle-4.4-all\[random hash folder], and unzip it there.

关键注意事项 #

• Make sure your offline Android Studio version is compatible with plugin 3.1.0—this requires Android Studio 3.1 or newer.
• When copying cache files, ensure you transfer all subdirectories and files, not just the top-level folders.
• Double-check that your project's build.gradle files are correctly referencing the 3.1.0 plugin version before syncing.

内容的提问来源于stack exchange，提问作者Archer c