multiDexKeepFile not working

Question

We are having problems in building our multidex App. We keep receiving different java.lang.NoClassDefFoundError erros during the application boot.

We noticed that they are very likely related to the multidex issues. As the required classes for booting the App must be present in the primary DEX file and they are not being included in the classes.dex. We performed the steps described in https://developer.android.com/studio/build/multidex.html#keep but the classes we specify in the multidex-config.txt, or even in the multidex-config.pro are not being placed in the primary dex file (classes.dex).

Do you guys have experience using the multiDexKeepFile or the multiDexKeepProguard? Does it really work? Is there any trick to make it work and place the files in the classes.dex?

No. I found some info point out that it was a known bug in the build tools. — Nadilson Ferreira, Dec 28 '17 at 21:51
@NadilsonFerreira Two years later, the bug is still there for me. How did you deal with it? — ban-geoengineering, Dec 20 '19 at 19:14

score 3 · Answer 1 · answered Aug 10 '17 at 20:55

3

Try updating your gradle plugin. I've seen that in 2.2.0 the configuration is ignored entirely. When I updated to 2.3.3 it started respecting the rules I set.

Example:

classpath com.android.tools.build:gradle:2.3.3

And in my default config I have this set:

    multiDexEnabled true
    multiDexKeepProguard file('proguard.multidex.config')

Also you may have to do a clean build before the changes are reflected.

answered Aug 10 '17 at 20:55

Travis Castillo

1,807
1
20
23

3

I'm using the (current) latest gradle plugin version - `classpath 'com.android.tools.build:gradle:3.5.3'`, but am still having the OP's problem. Also, by inspecting my apk ( https://developer.android.com/studio/build/apk-analyzer ), I see the classes I have specified via `multiDexKeepFeel` are present in **classes2.dex** rather than in the *primary* dex file, **classes.dex**. – ban-geoengineering Dec 19 '19 at 17:15

score 1 · Answer 2 · answered Feb 16 '19 at 06:42

1

I have the same problem.And i still don't know why. But i found another solution,and it works. In your app module's build.gradle add dexOptions:

android {
    dexOptions {
        additionalParameters = ['--multi-dex',
                                '--set-max-idx-number=60000',
                                '--main-dex-list='+projectDir+'/your_multidexconfig.txt',
                                '--minimal-main-dex'
        ]
    }
}

answered Feb 16 '19 at 06:42

you

51
4

Note that these parameters are for dx, not d8. Of these only --main-dex-list is available for d8. – Matt Robertson Jan 03 '20 at 13:58

score 1 · Answer 3 · answered Oct 31 '19 at 11:18

1

You should check your minSdkVersion, if your minSdkVersion is >= 21, multiDexKeepProguard is not supported. Because the build tools has do the dex split by default.

More details:

https://developer.android.com/studio/build/multidex

answered Oct 31 '19 at 11:18

Cobain

186
1
8

multiDexKeepFile not working

3 Answers3

Linked