java.util.zip.ZipException: duplicate entry during packageAllDebugClassesForMultiDex

Question

I am not sure what this error means.

Execution failed for task \':excelSior:packageAllDebugClassesForMultiDex\'.
> java.util.zip.ZipException: duplicate          


        

Answer 1

I also came across this kind issue when re import old eclipse project. It occurred some old dependency as jar file in the project.

just remove

compile fileTree(dir: 'libs', include: '*.jar')

in gradle file

and add dependency in the gradle file.

It works for me ..

Answer 2

In my case exact error was below

':android:transformClassesWithJarMergingForDebug'.

com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: com/google/android/gms/internal/zzqx.class

I was using another version of google apis i.e. in one modules gradle file

if (!project.hasProperty('gms_library_version')) {
        ext.gms_library_version = '8.6.0'
   }

however in other modules version 11.6.0 as below

   compile "com.google.android.gms:play-services-ads:11.6.0"
    compile "com.google.android.gms:play-services-games:11.6.0"
    compile "com.google.android.gms:play-services-auth:11.6.0"

However to find this i did a ctrl + n in android studio and entered class name zzqx.class and then it displayed 2 jar files being pulled for this class and then i understood that somewhere i am using version 8.6.0 . On changing 8.6.0 to 11.6.0 and rebuilding the project the issue was fixed .

Hope this helps .

More on this here https://www.versionpb.com/tutorials/step-step-tutorials-libgdx-basic-setup-libgdx/implementing-google-play-services-leaderboards-in-libgdx/

Answer 3

In my case the mentioned "duplicate entry" error arised after settingmultiDexEnable=true in the build.gradle.

and exact error which i was getting was below :

Error:Execution failed for task 
':android:transformClassesWithJarMergingForDebug'.
> com.android.build.api.transform.TransformException: 
java.util.zip.ZipException: duplicate entry: 
com/google/android/gms/internal/zzqx.class

So first thing I search for class which causes "duplicate entry" error using ctrl+n in Android Studio and searched for com/google/android/gms/internal/zzqx.class and then it was showing 2 entries for gms class with one version 8.4.0 and 1 with version 11.6.0 .

To fix it i made both to use 11.6.0 and it was fixed example

earlier

    compile "com.google.android.gms:play-services-games:11.6.0"
    compile "com.google.android.gms:play-services-auth:8.4.0"
    compile "com.google.android.gms:play-services-ads:11.6.0"

After

    compile "com.google.android.gms:play-services-games:11.6.0"
    compile "com.google.android.gms:play-services-auth:11.6.0"
    compile "com.google.android.gms:play-services-ads:11.6.0"

Rebuilding Fixed .