在 Android Studio 中包含 Java 模块作为依赖项时错误的 Java 编译器 [英] Wrong Java Compiler When Including a Java Module as Dependency in Android Studio

问题描述

我的 Android Studio 项目中有一个 java 模块，它是 Android 模块的依赖项.我在构建时遇到问题，出现以下异常.

I have a java module in my Android Studio project that is a dependency of an Android module. I am having problems on build with the following exception appearing.

Error:Execution failed for task ':myApplication:preDexDebug'.
> com.android.ide.common.internal.LoggedErrorException: Failed to run command:
    /Applications/Android Studio.app/sdk/build-tools/android-4.4W/dx --dex --output ~/myapplication-app-android/dev/biketracks-app-android/bikeTracks/build/intermediates/pre-dexed/debug/coreUtilities-6ee7e0aafa5a6db72b2acb078f065e51c43124c2.jar ~/myapplication-app-android/dev/myapplication-app-android/libs/coreUtilities/build/libs/coreUtilities.jar
  Error Code:
    1
  Output:
    UNEXPECTED TOP-LEVEL EXCEPTION:
    com.android.dx.cf.iface.ParseException: bad class file magic (cafebabe) or version (0034.0000)
        at com.android.dx.cf.direct.DirectClassFile.parse0(DirectClassFile.java:472)
        at com.android.dx.cf.direct.DirectClassFile.parse(DirectClassFile.java:406)
        at com.android.dx.cf.direct.DirectClassFile.parseToInterfacesIfNecessary(DirectClassFile.java:388)
        at com.android.dx.cf.direct.DirectClassFile.getMagic(DirectClassFile.java:251)
        at com.android.dx.command.dexer.Main.processClass(Main.java:665)
        at com.android.dx.command.dexer.Main.processFileBytes(Main.java:634)
        at com.android.dx.command.dexer.Main.access$600(Main.java:78)
        at com.android.dx.command.dexer.Main$1.processFileBytes(Main.java:572)
        at com.android.dx.cf.direct.ClassPathOpener.processArchive(ClassPathOpener.java:284)
        at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:166)
        at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:144)
        at com.android.dx.command.dexer.Main.processOne(Main.java:596)
        at com.android.dx.command.dexer.Main.processAllFiles(Main.java:498)
        at com.android.dx.command.dexer.Main.runMonoDex(Main.java:264)
        at com.android.dx.command.dexer.Main.run(Main.java:230)
        at com.android.dx.command.dexer.Main.main(Main.java:199)
        at com.android.dx.command.Main.main(Main.java:103)
    ...while parsing com/corecoders/coreutilities/GPSUtils.class
    1 error; aborting

经过一些阅读，我可以看到这与 Android Studio 使用的 Java 编译器有关.但是我看不到改变它使用的编译器的方法.

After some reading I can see that it is something to do with the Java compiler Android Studio is using. However I cannot see a way to change which compiler it uses.

我试图包含在我的 Android 模块中的 Java 模块是我使用 Android Studio 创建的，方法是转到文件">新模块">Java 模块"，所以我看不到任何可以改变的选项?

The Java module I am trying to include in my Android module is one I created using Android Studio by going File > New Module > Java Module so I can't see any option I could make different?

任何想法都会很棒.

推荐答案

所以我在这个 博文.

诀窍在于您需要在 Java 库模块的 build.gradle 文件中包含以下内容.

The trick is in your Java Library module's build.gradle file you need to include the following.

apply plugin: 'java'
sourceCompatibility = 1.6
targetCompatibility = 1.6

这将起作用.

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