Flutter安卓许可证问题：执行flutter doctor --android-licenses时JNI错误求助

问题场景 #

配置Flutter开发环境时遇到Android许可证验证问题，执行flutter doctor检测结果如下：

[√] Flutter (Channel stable, 3.7.1, on Microsoft Windows [Version 10.0.22621.1105], locale en-US)
[√] Windows Version (Installed version of Windows is version 10 or higher)
[!] Android toolchain - develop for Android devices (Android SDK version 33.0.1)
    X Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.
[√] Chrome - develop for the web
[√] Visual Studio - develop for Windows (Visual Studio Community 2022 17.3.6)
[√] Android Studio (version 2022.1)
[√] VS Code (version 1.75.0)
[√] Connected device (3 available)
[√] HTTP Host Availability

! Doctor found issues in 1 category.

按提示执行flutter doctor --android-licenses时，抛出JNI错误：

Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main"

已确认本地java和javac版本一致。

解决方案 #

• 指定Android Studio自带JDK

  1. 打开Android Studio，进入File > Project Structure > SDK Location
  2. 查看JDK Location路径（通常为Android Studio安装目录\jbr）
  3. 将该路径设置为系统环境变量JAVA_HOME的值
  4. 更新系统Path变量，把该JDK目录下的bin文件夹移到最顶端，确保优先调用这个版本的Java

• 重置并重新安装SDK命令行工具

  1. 找到Android SDK安装目录，进入licenses文件夹，删除其中所有文件
  2. 打开Android Studio的SDK Manager，切换到SDK Tools标签
  3. 勾选Android SDK Command-line Tools (latest)，点击Apply完成安装
  4. 重新执行flutter doctor --android-licenses

• 手动执行SDK许可证命令

  1. 打开命令提示符，切换到Android SDK的cmdline-tools\latest\bin目录
  2. 执行命令sdkmanager --licenses
  3. 按提示输入y接受所有许可证，完成后再运行flutter doctor验证状态

内容的提问来源于stack exchange，提问作者sobhan allah101