Unity3d 打包时报错 CommandInvokationFailure: Unable to convert classes into dex format. See the Console for details.

今天打包带有Android插件的unity3d 项目是，报错CommandInvokationFailure: Unable to convert classes into dex format. See the Console for details. 搜了一下说是因为出现了重复的class ，于是把在libs里面的class.jar干掉后发布正常。