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

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 .