Duplicate files copied in APK META-INF/

Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/rxjava.properties
  File1: /Users/wusheng/.gradle/caches/modules-2/files-2.1/io.reactivex/rxjava/1.3.0/af000bec2036a2a9d07197c4b03b8966bfc60b03/rxjava-1.3.0.jar
  File2: /Users/wusheng/.gradle/caches/modules-2/files-2.1/io.reactivex.rxjava2/rxjava/2.0.1/57f850a6b317e5582f1dbaff10a9e7d7e1fcdcfb/rxjava-2.0.1.jar

//解决部分第三方库重复打包META_INF的问题packagingOptions {    exclude 'META-INF/rxjava.properties'    exclude 'META_INF/LICENSE.txt'    exclude 'META_INF/NOTICE.txt'}

注意，如果采用的组件化，或者多个依赖工程，

需要在主app的build.gradle文件中加入上面的选项