无法设置新的 Unreal & Quest 2 开发环境

Question

我什至无法获得一个针对 Quest 2 平台的空虚幻项目来构建 Android 目标而不会出现错误。这似乎与各种互不兼容的Java / SDK / NDK / Gradle版本的混乱有关，我找不到合适的组合。 这是我目前根据Unreal中的Android Studio和Android SDK Platform设置使用的：

Android SDK：

• 已安装 API 级别 28
• API 级别 30 已安装
• 已安装 API 级别 31
• SDK Build Tools 31 已安装，但由于构建报告版本损坏而被删除
• SDK Build Tools 30.0.3 已安装
• SDK Build Tools 29.0.2 已安装
• 为 SDK API 级别配置虚幻环境latest
• 虚幻项目配置为面向 SDK 版本 28（最低 23）
• 我已在 D:/android-sdk 处明确向 Unreal Platform Android SDK 设置提供了位置，该位置与 Android Studio 中指定的位置匹配，但 Android Studio 使用 \ 而 Unreal 使用 /。

Android NDK：

• 我安装了 22.1.7171670
• 我已在D:/android-sdk/ndk/22.1.7171670 明确向虚幻提供了位置
• 我已经告诉 Unreal 使用 NDK API 级别 latest

Java：

• 我在 D:\Java 安装了 JDK 16.0.1
• 我已经明确告诉 Unreal Android SDK 设置使用来自D:/Java 的 JAVA

梯度：

• 我更新了我的 UE_4.26\Engine\Build\Android\Java\gradle\gradle\wrapper\gradle-wrapper.properties 文件以引用 distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-bin.zip 并注释掉了 #distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip 因为我不知道的其他错误现在不记得了。

当我尝试在此环境中构建项目时（使用 File > Package Project > Android > Android (Multi: ASTC, DXT, ETC2)，我的输出结果如下所示：

UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): FAILURE: Build failed with an exception.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): * What went wrong:
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): Execution failed for task ':app:processDebugManifest'.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): > Unable to make field private final java.lang.String java.io.File.path accessible: module java.base does not "opens java.io" to unnamed module @5caa5e6c
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): * Try:
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): 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.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): * Get more help at https://help.gradle.org
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): Use '--warning-mode all' to show the individual deprecation warnings.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): See https://docs.gradle.org/7.0/userguide/command_line_interface.html#sec:command_line_warnings
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): BUILD FAILED in 10s
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): 16 actionable tasks: 1 executed, 15 up-to-date
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): ERROR: cmd.exe failed with args /c "C:\Users\bluem\Documents\Unreal Projects\Quest2Test\Intermediate\Android\armv7\gradle\rungradle.bat" :app:assembleDebug
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)):        (see C:\Users\bluem\AppData\Roaming\Unreal Engine\AutomationTool\Logs\D+Games+Epic+UE_4.26\Log.txt for full exception trace)
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): AutomationTool exiting with ExitCode=1 (Error_Unknown)
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): BUILD FAILED

我把SDK目标从28改成30，把JAVA目录从D:/Java改成C:/Program Files/Java/jdk1.8.0_161然后报错：

UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): FAILURE: Build failed with an exception.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): * What went wrong:
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): Execution failed for task ':downloader_library:compileDebugJavaWithJavac'.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): > Failed to query the value of task ':downloader_library:compileDebugJavaWithJavac' property 'options.generatedSourceOutputDirectory'.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)):    > Querying the mapped value of map(java.io.File property(org.gradle.api.file.Directory, fixed(class org.gradle.api.internal.file.DefaultFilePropertyFactory$FixedDirectory, Z:\downloader_library\build\generated\ap_generated_sources\debug\out)) org.gradle.api.internal.file.DefaultFilePropertyFactory$ToFi
leTransformer@2ccc294e) before task ':downloader_library:compileDebugJavaWithJavac' has completed is not supported
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): * Try:
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): 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.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): * Get more help at https://help.gradle.org
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): BUILD FAILED in 25s
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): Use '--warning-mode all' to show the individual deprecation warnings.
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): See https://docs.gradle.org/7.0/userguide/command_line_interface.html#sec:command_line_warnings
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): 44 actionable tasks: 6 executed, 38 up-to-date
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): ERROR: cmd.exe failed with args /c "C:\Users\bluem\Documents\Unreal Projects\Quest2Test\Intermediate\Android\armv7\gradle\rungradle.bat" :app:assembleDebug
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)):        (see C:\Users\bluem\AppData\Roaming\Unreal Engine\AutomationTool\Logs\D+Games+Epic+UE_4.26\Log.txt for full exception trace)
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): AutomationTool exiting with ExitCode=1 (Error_Unknown)
UATHelper: Packaging (Android (Multi:ASTC,DXT,ETC2)): BUILD FAILED

如果我将这两个设置中的一个或两个更改回它们以前的值，则错误不会变回第一个错误。如果我然后将目标 SDK 版本（再次）更改回 30，那么我再次收到原始错误，这次目标 SDK 版本设置为 30。所以看起来 JDK 版本是罪魁祸首，但更改了目标 SDK 版本尽管我在项目打包设置中选择了“完全重建”，但仍需要强制重建某些内容。

问题

所以我的问题是，我该如何克服这两个错误？

1. 无法使字段私有 final java.lang.String java.io.File.path 可访问：模块 java.base 不会“打开 java.io”到未命名模块 @5caa5e6c
2. 查询map的映射值(java.io.File property(org.gradle.api.file.Directory, fixed(class org.gradle.api.internal.file.DefaultFilePropertyFactory$FixedDirectory, Z:\downloader_library\build \generated\ap_generated_sources\debug\out)) org.gradle.api.internal.file.DefaultFilePropertyFactory$ToFileTransformer@2ccc294e) 在任务 ':downloader_library:compileDebugJavaWithJavac' 完成之前不受支持

Answer 1

需要将 Gradle 降级回distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-all.zip 而且这只工作了一次。我无法使用相同的设置再次构建。似乎存在一些时间问题，可能需要等待 https://github.com/gradle/gradle/issues/16777 解决才能克服错误。每次构建时，我都会看到不同的错误。我已经看到至少 6 个不同的错误。删除中间目录和保存目录后，我在第二次尝试中成功构建。

Answer 2

似乎需要 jdk1.8.0_321 而不是 JDK16/17。这使我能够始终如一地为 Quest 构建（我没有 Quest 2，但它也应该在那里工作）

除此之外，您在此处提供的所有设置都解决了我的问题。