Unity项目打包APK失败求助：Build Tools 33.0.0损坏问题

Unity 2020.3.21 版本项目打包APK失败，因需提交Google Play Store更新，当前使用API Level 31。每次打包均触发「Build Tools 33.0.0损坏」报错，已通过Android Studio重新安装该版本但问题依旧。

第一次报错日志：

FAILURE: Build failed with an exception.

* What went wrong:
Could not determine the dependencies of task ':unityLibrary:GoogleMobileAdsPlugin.androidlib:compileReleaseAidl'.
> Installed Build Tools revision 33.0.0 is corrupted. Remove and install again using the SDK Manager.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with -

第二次报错日志：

Could not determine the dependencies of task ':unityLibrary:GoogleMobileAdsPlugin.androidlib:compileReleaseAidl'.
> Installed Build Tools revision 33.0.0 is corrupted. Remove and install again using the SDK Manager.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 17s
Picked up JAVA_TOOL_OPTIONS: -Dfile.encoding=UTF-8
]

• 手动清理Build Tools残留文件

  1. 关闭Unity和Android Studio
  2. 找到Android SDK的Build Tools目录：Windows路径一般是C:\Users\[你的用户名]\AppData\Local\Android\Sdk\build-tools\33.0.0，Mac路径一般是~/Library/Android/sdk/build-tools/33.0.0
  3. 彻底删除整个33.0.0文件夹
  4. 重新打开Android Studio，通过SDK Manager重新安装Build Tools 33.0.0

• 指定Unity使用的Build Tools版本

  1. 在Unity编辑器中打开Edit > Project Settings > Player > Android > Publishing Settings
  2. 展开Build选项，找到Build Tools Version，手动选择33.0.0（若下拉列表无该选项，点击Download重新下载）

• 排查Google Mobile Ads插件兼容性

  1. 将项目中的Google Mobile Ads插件更新至兼容Unity 2020.3的最新版本
  2. 若更新后仍报错，可暂时回退到Build Tools 32.0.0（API Level 31可搭配该版本打包）

• 清理Unity与Gradle缓存

  1. 在Unity中点击File > Build Settings > Android > Clean Build
  2. 删除Gradle缓存目录：Windows为C:\Users\[你的用户名]\.gradle\caches，Mac为~/.gradle/caches
  3. 重新尝试打包

内容的提问来源于stack exchange，提问作者Zain