18、DuplicateFileException: Duplicate files copied in APK META-INF/INDEX.LIST

一、问题现象

在使用android studio 编译一个android 工程时遇到下面的问题：
DuplicateFileException: Duplicate files copied in APK META-INF/INDEX.LIST

com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK META-INF/INDEX.LIST File 1: C:\Users\User.gradle\caches\modules-2\files-2.1\org.javafxports\dalvik-sdk\8.60.8\6630ec66e4703c910ac3fd6151a8494c8b59186b\unpacked\dalvik-sdk\rt\lib\ext\jfxrt.jar File 2: C:\Users\User.gradle\caches\modules-2\files-2.1\org.javafxports\dalvik-sdk\8.60.8\6630ec66e4703c910ac3fd6151a8494c8b59186b\unpacked\dalvik-sdk\rt\lib\ext\jfxrt.jar

二、问题分析

三、问题解决

android {    ....    packagingOptions {        exclude 'META-INF/INDEX.LIST'    }}