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

For Error:Execution failed for task ':app:transformClassesWithJarMergingForDebug' com.android.build.api.transform.TransformException java.util.zip.ZipException duplicate entry com/google/gson/annotations/Expose.class

Here is what I did:

1) Delete the gson-2.5.jar file. 2) configurations { all*.exclude module: 'gson-2.5' }

Answer 2

check your dependencies versions, you must have compatible versions put attention specially to com.google packages, must have same version like:

compile 'com.google.android.gms:play-services:8.3.0'
compile 'com.google.android.gms:play-services-maps:8.3.0'

Both are 8.3.0, if you have another version compilation will throw that exception.

Answer 3

I tried all the above solutions but not working for me. I tried update libraries by goto project structure > app. And it works for me! Hope this answer helpful to someone.

Answer 4

My understanding is that there are duplicate references to the same API (Likely different version numbers). It should be reasonably easy to debug when building from the command line.

Try ./gradlew yourBuildVariantName --debug from the command line.

The offending item will be the first failure. An example might look like:

14:32:29.171 [INFO] [org.gradle.api.Task] INPUT: /Users/mydir/Documents/androidApp/BaseApp/build/intermediates/exploded-aar/theOffendingAAR/libs/google-play-services.jar

14:32:29.171 [DEBUG] [org.gradle.api.internal.tasks.execution.ExecuteAtMostOnceTaskExecuter] Finished executing task ':BaseApp:packageAllyourBuildVariantNameClassesForMultiDex'

14:32:29.172 [LIFECYCLE] [class org.gradle.TaskExecutionLogger] :BaseApp:packageAllyourBuildVariantNameClassesForMultiDex FAILED'

In the case above, the aar file that I'd included in my libs directory (theOffendingAAR) included the Google Play Services jar (yes the whole thing. yes I know.) file whilst my BaseApp build file utilised location services:

compile 'com.google.android.gms:play-services-location:6.5.87'

You can safely remove the offending item from your build file(s), clean and rebuild (repeat if necessary).

Answer 5

Simple Remove Your Jar file from dependencies gardle.project as v7 and run your project

Answer 6

This is because you have added a library and given its dependency on a module more than once.

In my case, I had added a library as a module and as a gradle dependency both.

Removing one source of adding library (I removed gradle dependency) solved my problem.