为 Unity 3D 5.3 构建 Android 库时出错 - Android Studio

Question

我正在使用 Android Studio 尝试为 Unity3d 5.3 构建 Android 库。为此，我创建了一个 Android 库模块并添加了 classes.jar 文件以使用 UnityPlayer，如下图所示：

然后，我生成了模块，并获得了文件 'wrapper-debug.aar'，我将它放在了 '\Assets\Plugins\Android' 中。最后，当我构建时，出现以下错误：

Error building Player: CommandInvokationFailure: Unable to convert classes   into dex format. See the Console for details.
C:/Program Files/Java/jdk1.8.0_45\bin\java.exe -Xmx2048M -Dcom.android.sdkmanager.toolsdir="C:/Users/.../AppData/Local/Android\tools" -Dfile.encoding=UTF8 -jar "C:\Program Files\Unity\Editor\Data\PlaybackEngines\AndroidPlayer/Tools\sdktools.jar" -

stderr[
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lbitter/jnibridge/JNIBridge;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lbitter/jnibridge/JNIBridge$a;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/NativeLoader;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/ReflectionHelper;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/ReflectionHelper$1;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/ReflectionHelper$a;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/UnityPlayer;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/UnityPlayer$1;
Uncaught translation error: java.lang.IllegalArgumentException: already added: Lcom/unity3d/player/UnityPlayer$10;

UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.RuntimeException: Translation has been interrupted
at com.android.dx.command.dexer.Main.processAllFiles(Main.java:608)
at com.android.dx.command.dexer.Main.runMonoDex(Main.java:311)
at com.android.dx.command.dexer.Main.run(Main.java:277)
at com.android.dx.command.dexer.Main.main(Main.java:245)
at com.android.dx.command.Main.main(Main.java:106)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at SDKMain.main(SDKMain.java:129)
Caused by: java.lang.InterruptedException: Too many errors
at com.android.dx.command.dexer.Main.processAllFiles(Main.java:600)
... 9 more
]
stdout[
processing archive G:\...\Unity5\Projects\AndroidPlugin\AndroidPlugin\Temp\StagingArea\android-libraries\wrapper-debug\bin\classes.jar...
processing unitywrapper/wrapper/BuildConfig.class...
processing unitywrapper/wrapper/Wrapper.class...
processing archive G:\...\Unity5\Projects\AndroidPlugin\AndroidPlugin\Temp\StagingArea\android-libraries\wrapper-debug\libs\.\classes.jar...
processing bitter/jnibridge/JNIBridge.class...
processing bitter/jnibridge/JNIBridge$a.class...
processing com/unity3d/player/NativeLoader.class...
processing com/unity3d/player/ReflectionHelper.class...
processing com/unity3d/player/ReflectionHelper$1.class...
processing com/unity3d/player/ReflectionHelper$a.class...
processing com/unity3d/player/UnityPlayer.class...
processing com/unity3d/player/UnityPlayer$1.class...
processing com/unity3d/player/UnityPlayer$10.class...
processing com/unity3d/player/UnityPlayer$11.class...
processing com/unity3d/player/UnityPlayer$12.class...
processing com/unity3d/player/UnityPlayer$13.class...
processing com/unity3d/player/UnityPlayer$14.class...
processing com/unity3d/player/UnityPlayer$15.class...
processing com/unity3d/player/UnityPlayer$15$1.class...
processing com/unity3d/player/UnityPlayer$16.class...
processing com/unity3d/player/UnityPlayer$17.class...
processing com/unity3d/player/UnityPlayer$18.class...
processing com/unity3d/player/UnityPlayer$19.class...
processing com/unity3d/player/UnityPlayer$2.class...
processing com/unity3d/player/UnityPlayer$20.class...
processing com/unity3d/player/UnityPlayer$3.class...
processing com/unity3d/player/UnityPlayer$4.class...
processing com/unity3d/player/UnityPlayer$5.class...
processing com/unity3d/player/UnityPlayer$6.class...
processing com/unity3d/player/UnityPlayer$7.class...
processing com/unity3d/player/UnityPlayer$8.class...
processing com/unity3d/player/UnityPlayer$9.class...
processing com/unity3d/player/UnityPlayer$a.class...
processing com/unity3d/player/UnityPlayer$b.class...
processing com/unity3d/player/UnityPlayer$c.class...
processing com/unity3d/player/UnityPlayerActivity.class...
processing com/unity3d/player/UnityPlayerNativeActivity.class...
processing com/unity3d/player/UnityPlayerProxyActivity.class...
processing com/unity3d/player/UnityWebRequest.class...
processing com/unity3d/player/WWW.class...
processing com/unity3d/player/a.class...
processing com/unity3d/player/a$1.class...
processing com/unity3d/player/a$2.class...
processing com/unity3d/player/a$a.class...
processing com/unity3d/player/b.class...
processing com/unity3d/player/b$1.class...
processing com/unity3d/player/b$2.class...
processing com/unity3d/player/c.class...
processing com/unity3d/player/d.class...
processing com/unity3d/player/d$1.class...
processing com/unity3d/player/d$2.class...
processing com/unity3d/player/e.class...
processing com/unity3d/player/f.class...
processing com/unity3d/player/g.class...
processing com/unity3d/player/h.class...
processing com/unity3d/player/i.class...
processing com/unity3d/player/j.class...
processing com/unity3d/player/k.class...
processing com/unity3d/player/k$1.class...
processing com/unity3d/player/k$2.class...
processing com/unity3d/player/k$2$1.class...
processing com/unity3d/player/k$2$1$1.class...
processing com/unity3d/player/l.class...
processing com/unity3d/player/l$1.class...
processing com/unity3d/player/m.class...
processing com/unity3d/player/n.class...
processing com/unity3d/player/n$1.class...
processing com/unity3d/player/o.class...
processing com/unity3d/player/p.class...
processing com/unity3d/player/p$1.class...
processing com/unity3d/player/q.class...
processing com/unity3d/player/r.class...
processing com/unity3d/player/s.class...
processing com/unity3d/player/s$1.class...
processing com/unity3d/player/s$2.class...
processing com/unity3d/player/s$3.class...
processing com/unity3d/player/t.class...
processing com/unity3d/player/u.class...
processing com/unity3d/player/v.class...
processing com/unity3d/player/w.class...
processing com/unity3d/player/w$1.class...
processing org/fmod/FMODAudioDevice.class...
processing org/fmod/a.class...
processing bin\classes\.\com\androidplugin\android\R.class...
processing bin\classes\.\com\androidplugin\android\R$attr.class...
processing bin\classes\.\com\androidplugin\android\R$drawable.class...
processing bin\classes\.\com\androidplugin\android\R$string.class...
processing bin\classes\.\unitywrapper\wrapper\R.class...
processing bin\classes\.\unitywrapper\wrapper\R$attr.class...
processing bin\classes\.\unitywrapper\wrapper\R$drawable.class...
processing bin\classes\.\unitywrapper\wrapper\R$string.class...
processing archive bin\classes.jar...
processing bitter/jnibridge/JNIBridge.class...
processing bitter/jnibridge/JNIBridge$a.class...
processing com/unity3d/player/NativeLoader.class...
processing com/unity3d/player/ReflectionHelper.class...
processing com/unity3d/player/ReflectionHelper$1.class...
processing com/unity3d/player/ReflectionHelper$a.class...
processing com/unity3d/player/UnityPlayer.class...
processing com/unity3d/player/UnityPlayer$1.class...
processing com/unity3d/player/UnityPlayer$10.class...
processing com/unity3d/player/UnityPlayer$11.class...
processing com/unity3d/player/UnityPlayer$12.class...
processing com/unity3d/player/UnityPlayer$13.class...
processing com/unity3d/player/UnityPlayer$14.class...
processing com/unity3d/player/UnityPlayer$15.class...
processing com/unity3d/player/UnityPlayer$15$1.class...
processing com/unity3d/player/UnityPlayer$16.class...
processing com/unity3d/player/UnityPlayer$17.class...
processing com/unity3d/player/UnityPlayer$18.class...
processing com/unity3d/player/UnityPlayer$19.class...
processing com/unity3d/player/UnityPlayer$2.class...
processing com/unity3d/player/UnityPlayer$20.class...
processing com/unity3d/player/UnityPlayer$3.class...
processing com/unity3d/player/UnityPlayer$4.class...
processing com/unity3d/player/UnityPlayer$5.class...
processing com/unity3d/player/UnityPlayer$6.class...
processing com/unity3d/player/UnityPlayer$7.class...
processing com/unity3d/player/UnityPlayer$8.class...
processing com/unity3d/player/UnityPlayer$9.class...
processing com/unity3d/player/UnityPlayer$a.class...
processing com/unity3d/player/UnityPlayer$b.class...
processing com/unity3d/player/UnityPlayer$c.class...
processing com/unity3d/player/UnityPlayerActivity.class...
processing com/unity3d/player/UnityPlayerNativeActivity.class...
processing com/unity3d/player/UnityPlayerProxyActivity.class...
processing com/unity3d/player/UnityWebRequest.class...
processing com/unity3d/player/WWW.class...
processing com/unity3d/player/a.class...
processing com/unity3d/player/a$1.class...
processing com/unity3d/player/a$2.class...
processing com/unity3d/player/a$a.class...
processing com/unity3d/player/b.class...
processing com/unity3d/player/b$1.class...
processing com/unity3d/player/b$2.class...
processing com/unity3d/player/c.class...
processing com/unity3d/player/d.class...
processing com/unity3d/player/d$1.class...
processing com/unity3d/player/d$2.class...
processing com/unity3d/player/e.class...
processing com/unity3d/player/f.class...
processing com/unity3d/player/g.class...
processing com/unity3d/player/h.class...
processing com/unity3d/player/i.class...
processing com/unity3d/player/j.class...
processing com/unity3d/player/k.class...
processing com/unity3d/player/k$1.class...
processing com/unity3d/player/k$2.class...
processing com/unity3d/player/k$2$1.class...
processing com/unity3d/player/k$2$1$1.class...
processing com/unity3d/player/l.class...
processing com/unity3d/player/l$1.class...
processing com/unity3d/player/m.class...
processing com/unity3d/player/n.class...
processing com/unity3d/player/n$1.class...
processing com/unity3d/player/o.class...
processing com/unity3d/player/p.class...
processing com/unity3d/player/p$1.class...
processing com/unity3d/player/q.class...
processing com/unity3d/player/r.class...
processing com/unity3d/player/s.class...
processing com/unity3d/player/s$1.class...
processing com/unity3d/player/s$2.class...
processing com/unity3d/player/s$3.class...
processing com/unity3d/player/t.class...
processing com/unity3d/player/u.class...
processing com/unity3d/player/v.class...
processing com/unity3d/player/w.class...
processing com/unity3d/player/w$1.class...
processing org/fmod/FMODAudioDevice.class...
processing org/fmod/a.class...
]

我能理解的是，我正在添加已经添加的类。问题在于文件classes.jar。如果我把它取下来，插件可以正常工作，但没有它，我将无法在我的库中使用 unityPlayer，这是我真正需要的东西。

另一种方法是做一个 .jar 库，但在这种情况下，我必须将 res 文件夹放在 Unity 的 android 插件文件夹中，但这是不推荐使用的。

还有其他方法可以使用 Unity 5.x 的 android 库吗？

非常感谢 如果您需要更多信息，请告诉我。

Answer 1

Unity 在构建应用程序时会自动将自己的类添加到项目中。如果您将它们与您的库捆绑在一起，它们将被添加两次。

除了您当前使用的 compile 配置之外，Android 的 Gradle 插件还定义了一个名为 provided 的配置。不同之处在于它假定依赖项将在运行时出现在应用程序的类路径中，并且不包含构建库中的类。

要将 provided 配置与该特定 JAR 一起使用，请替换这两行

compile fileTree(include: ['*.jar'], dir: 'libs')

compile files('libs/classes.jar')

这些

compile fileTree(dir: 'libs', include: ['*.jar'], exclude: ['classes.jar'])

provided files('libs/classes.jar')

这将使 Gradle 将放置在 libs/ 中的每个 JAR 文件视为与您的库捆绑在一起的依赖项，classes.jar 除外，它仅用于编译您的库。

请注意，如果您使用的是 Android Gradle 插件 3.0.0 或更新版本，您应该使用 implementation 而不是 compile 和 compileOnly 而不是 provided。这些配置已重命名：https://developer.android.com/studio/build/gradle-plugin-3-0-0-migration#new_configurations。