Unity打包Android APK遇CommandInvokationFailure错误求助

错误详情 #

CommandInvokationFailure: Unable to convert classes into dex format.
/Users/mbj0578/Library/Java/JavaVirtualMachines/jdk1.8.0_231.jdk/Contents/Home/bin/java -Xmx2048M -Dcom.android.sdkmanager.toolsdir="/Users/mbj0578/Library/Android/sdk/tools" -Dfile.encoding=UTF8 -jar "/Applications/Unity/Hub/Editor/2017.3.0f3/PlaybackEngines/AndroidPlayer/Tools/sdktools.jar" -

stderr[
Error:Invalid command dx
]
stdout[

]
exit code: 64
UnityEditor.Android.Command.WaitForProgramToRun (UnityEditor.Utils.Program p, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.Command.Run (System.Diagnostics.ProcessStartInfo psi, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandInternal (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEditor.Android.AndroidSDKTools.RunCommandSafe (System.String javaExe, System.String sdkToolsDir, System.String[] sdkToolCommand, Int32 memoryMB, System.String workingdir, UnityEditor.Android.WaitingForProcessToExit waitingForProcessToExit, System.String errorMsg)
UnityEngine.GUIUtility:ProcessEvent(Int32, IntPtr)

环境信息 #

• JDK版本：jdk1.8.0_231
• AndroidManifest：截图内容未展示

解决方案 #

1. 匹配Android SDK Build Tools版本 #

Unity 2017.3版本较旧，不支持高版本Android SDK Build Tools（28及以上版本中dx工具被d8替代）。操作步骤：

• 打开Android SDK Manager，卸载27.0.0及以上版本的Build Tools
• 安装26.0.2版本的Build Tools

2. 验证Unity的Android配置 #

• 打开Unity编辑器，进入Edit > Preferences > External Tools
• 确认Android SDK路径指向包含tools和build-tools/26.0.2的目录
• 确认JDK路径指向jdk1.8.0_231的安装目录

3. 清理项目缓存 #

• 关闭Unity编辑器
• 删除项目根目录下的Library文件夹
• 重新打开Unity，等待资源重新导入完成后再尝试打包

4. 排查插件依赖冲突 #

• 移除项目中最近添加的第三方插件，逐一排查是否存在重复jar包或依赖冲突
• 检查Plugins/Android目录下的jar包，确保没有重复的类定义

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