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UnityでAndroidビルドが失敗する場合

Last updated at Posted at 2014-02-12

UnityのAndroidビルドで、
「Unable to convert classes into dex format. See the Console for details.」というエラーが出てビルドに失敗し、
以下のように詳細なエラーメッセージに java.lang.IllegalArgumentException: already added と表示される場合は、同じクラスファイルが存在しているため多重定義になっていますので、プロジェクト設定を見直す必要があります。

stderr[

UNEXPECTED TOP-LEVEL EXCEPTION:
java.lang.IllegalArgumentException: already added: L[パッケージ名の為 割愛];
	at com.android.dx.dex.file.ClassDefsSection.add(ClassDefsSection.java:123)
	at com.android.dx.dex.file.DexFile.add(DexFile.java:163)
	at com.android.dx.command.dexer.Main.processClass(Main.java:490)
	at com.android.dx.command.dexer.Main.processFileBytes(Main.java:459)
	at com.android.dx.command.dexer.Main.access$400(Main.java:67)
	at com.android.dx.command.dexer.Main$1.processFileBytes(Main.java:398)
	at com.android.dx.cf.direct.ClassPathOpener.processArchive(ClassPathOpener.java:245)
	at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:131)
	at com.android.dx.cf.direct.ClassPathOpener.processDirectory(ClassPathOpener.java:191)
	at com.android.dx.cf.direct.ClassPathOpener.processOne(ClassPathOpener.java:123)
	at com.android.dx.cf.direct.ClassPathOpener.process(ClassPathOpener.java:109)
	at com.android.dx.command.dexer.Main.processOne(Main.java:422)
	at com.android.dx.command.dexer.Main.processAllFiles(Main.java:333)
	at com.android.dx.command.dexer.Main.run(Main.java:209)
	at com.android.dx.command.dexer.Main.main(Main.java:174)
	at com.android.dx.command.Main.main(Main.java:91)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at SDKMain.main(SDKMain.java:129)
1 error; aborting
]

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