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In my project, i included two .aar libraries and both aar libraries have a commmon .jar file in their libs folder. When i try to obfuscate my code using pro-guard

>Error:Execution failed for task ':CpcCaenSample:transformClassesAndResourcesWithProguardForRelease'.
 java.io.IOException: Can't write [D:\Projects\Cone\CpcCaenSample\CpcCaenSample\build\intermediates\transforms\proguard\release\jars\3\1f\main.jar] (Can't read [D:\Projects\Cone\CpcCaenSample\CpcCaenSample\build\intermediates\exploded-aar\CpcSerialCommunication-1.0.4\jars\libs\d2xx.jar(;;;;;;**/*.class)] (Duplicate zip entry [d2xx.jar:com/ftdi/j2xx/BM_REQUEST_TYPE.class]))

My proguard file is 

> -libraryjars  D:\Projects\Cone\CpcCaenSample\CpcCaenSample\libs\CaenRfidLibrary-1.0.1.aar
-libraryjars  D:\Projects\Cone\CpcCaenSample\CpcCaenSample\libs\CpcHdkCone-1.7.1.aar
-libraryjars  D:\Projects\Cone\CpcCaenSample\CpcCaenSample\libs\CpcHdkIntrabet-1.1.3.aar
-libraryjars  D:\Projects\Cone\CpcCaenSample\CpcCaenSample\libs\CpcHdkVoterDevice-1.0.3.aar
-libraryjars  D:\Projects\Cone\CpcCaenSample\CpcCaenSample\libs\CpcPowerMgmt-2.6.0.aar
-libraryjars  D:\Projects\Cone\CpcCaenSample\CpcCaenSample\libs\CpcSerialCommunication-1.0.4.aar
-libraryjars  D:\Projects\Cone\CpcCaenSample\CpcCaenSample\libs\CpcUtilsLib-4.0.0.aar

>-keep public class com.caen.*
-keep public class com.ftdi.*
-keep public class com.ftdi.j2xx.*
-keep public class com.ftdi.j2xx
-keep public class com.ftdi.d2xx.*
-keep public class com.ftdi.j2xx.BM_REQUEST_TYPE
-keep public class com.ftdi.d2xx.BM_REQUEST_TYPE

>-keep class com.ftdi.j2xx.** { native <methods>; }
-keep class com.ftdi.j2xx { native <methods>; }
-keep class com.ftdi { native <methods>; }

>-verbose

I am using android studio 1.5.1.

Kindly share solution.

user1595266
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1 Answers1

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its because you have added CaenRfidLibrary two times in libs folder, this could happen sometimes when you have multiple versions of same library in libs folder.

and second option could be you have also added the dependency in gradle.build of this library. So check both places and remove duplicate enteries and the clean and build APK again.

Hope it helps

Atiq
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