Entry name 'classes.dex' collided

Question

While trying to Generate a signed APK I'm getting this error

Entry name 'classes.dex' collided

Can someone tell me how to solve it? I recently changed the default package name which was com.exmaple to my app's name. It builds correctly but gives this error while trying to generate a signed APK

My android studio version is 4.1.2

score 245 · Accepted Answer · edited Mar 05 '21 at 09:29

245

You are probably facing this error because you already have a signed APK in your project's "release" folder. Please check for any existing APK and delete it, then try to generate once more.

edited Mar 05 '21 at 09:29

Dharman

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answered Mar 05 '21 at 09:24

Tanzim Chowdhury

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I think this will go down in history as one of the most misleading error messages of all time. - Your solution works like a charm ;) – Norbert Hüthmayr Apr 30 '21 at 18:46
2

this is the second time I am here, for different android studio versions, buld failed with the same message `Entry name 'classes.dex' collided `same cause `app-release.apk` is already in the `release` folder – Ali Tamoor Nov 14 '22 at 12:51
I'm surprised they haven't fixed this yet – Tanzim Chowdhury Nov 17 '22 at 09:27

score 31 · Answer 2 · edited Jul 20 '22 at 04:40

31

I had the same problem and here's how I solved it easily:

Build -> Clean Project
Build -> Generate Signed Bundle / APK..

edited Jul 20 '22 at 04:40

cigien

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answered May 07 '21 at 18:31

Félix Maroy

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score 0 · Answer 3 · answered Jul 20 '22 at 03:52

0

Add this code in build.gradle

android {
    packagingOptions {
    exclude 'classes.dex'
    exclude '**.**'
    }
}

https://rtdevs.xyz/how-to-solve-entry-name-classes-dex-collided-in-android-studio/

answered Jul 20 '22 at 03:52

Hemanth Ravindra

1

Entry name 'classes.dex' collided

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