Duplicate Class errror when building for Android

[DrZoidberg09]

I am using the newest Expo version (54.0.20) and upgraded to version 4.0.

When building it for android, I get the following error:


xecution failed for task ':app:checkDebugDuplicateClasses'.
A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable
Duplicate class com.tencent.mmkv.BuildConfig found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.MMKV found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.MMKV$1 found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.MMKV$LibLoader found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.MMKVContentChangeNotification found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.MMKVContentProvider found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.MMKVHandler found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.MMKVLogLevel found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.MMKVProcessUtil found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.MMKVRecoverStrategic found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.NativeBuffer found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.ParcelableMMKV found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)
Duplicate class com.tencent.mmkv.ParcelableMMKV$1 found in modules mmkv-1.3.14.aar -> mmkv-1.3.14-runtime (com.tencent:mmkv:1.3.14) and mmkv-2.2.4.aar -> mmkv-2.2.4-runtime (io.github.zhongwuzw:mmkv:2.2.4)

It works finde with 3.3.3 and on iOS. Any ideas how to fix?

[maintenance-hans]

Guten Tag, Hans here.

Note

New features, bugfixes, updates and other improvements are all handled mostly by @mrousavy in his free time.
To support @mrousavy, please consider 💖 sponsoring him on GitHub 💖.
Sponsored issues will be prioritized.

[mrousavy]

Did you add com.tencent.mmkv to your build.gradle? You need to use our fork which includes 32-bit support:

react-native-mmkv/packages/react-native-mmkv/android/build.gradle

Line 142 in e559aa5

implementation "io.github.zhongwuzw:mmkv:2.2.4"

[DrZoidberg09]

I did not change anything. Just yarn add react-native-mmkv. No fork or any changes done on my side.

[mrousavy]

You are using com.tencent.mmkv in your Gradle project somehow - I don't know if it's a transitive dependency in npm (eg react-native-mmkv-storage), or a duplicate react-native-mmkv install, or if you added it somehow natively to build.gradle - but you have the native library duplicated.

Clean your cache and try to figure out where that's coming from

[DrZoidberg09]

I cleared any kind of cache, made expo prebuild --clean and checked other packages. There is nothing else installed like react-native-mmkv-storage. Also searching for mmkv gives and trace of a dependency in any package. Do you have any other idea how to debug?

Edit: I also used your MacOS cleaner script to clean Android and Gradle cache. No success

[terfender]

Hi @mrousavy , I am also facing the same issue.
Does this help? Using the latest react-native-mmkv and react-native-nitro-fetch versions.

Error:

[io.github.zhongwuzw:mmkv:2.2.4] /Users/xxxxx/.gradle/caches/9.0.0/transforms/d96e28db0babab831d070de5273d3539/transformed/mmkv-2.2.4/AndroidManifest.xml Error:
	Namespace 'com.tencent.mmkv' is used in multiple modules and/or libraries: io.github.zhongwuzw:mmkv:2.2.4, com.tencent:mmkv:1.3.14, io.github.zhongwuzw:annotation:2.2.4. Please ensure that all modules and libraries have a unique namespace. For more information, See https://developer.android.com/studio/build/configure-app-module#set-namespace

Checking for dups:

grep -R "com.tencent.mmkv" -n ./node_modules

./node_modules/react-native-nitro-fetch/android/build.gradle:120:  implementation("com.tencent:mmkv:1.3.14")// or latest
Binary file ./node_modules/react-native-nitro-fetch/android/build/kotlin/compileDebugKotlin/cacheable/caches-jvm/lookups/lookups.tab.keystream matches
Binary file ./node_modules/react-native-nitro-fetch/android/build/intermediates/compile_library_classes_jar/debug/bundleLibCompileToJarDebug/classes.jar matches
Binary file ./node_modules/react-native-nitro-fetch/android/build/intermediates/compile_and_runtime_not_namespaced_r_class_jar/debugUnitTest/generateDebugUnitTestStubRFile/R.jar matches
Binary file ./node_modules/react-native-nitro-fetch/android/build/intermediates/compile_and_runtime_not_namespaced_r_class_jar/debugAndroidTest/processDebugAndroidTestResources/R.jar matches
Binary file ./node_modules/react-native-nitro-fetch/android/build/tmp/kotlin-classes/debug/com/margelo/nitro/nitrofetch/AutoPrefetcher.class matches
./node_modules/react-native-nitro-fetch/android/src/main/java/com/margelo/nitro/nitrofetch/AutoPrefetcher.kt:7:import com.tencent.mmkv.MMKV;
Binary file ./node_modules/react-native-mmkv/android/build/intermediates/compile_and_runtime_not_namespaced_r_class_jar/debugUnitTest/generateDebugUnitTestStubRFile/R.jar matches
Binary file ./node_modules/react-native-mmkv/android/build/intermediates/compile_and_runtime_not_namespaced_r_class_jar/debugAndroidTest/processDebugAndroidTestResources/R.jar matches

I am also getting getting Namespace 'org.chromium.net' is used in multiple modules and/or libraries when building nitro-fetch for Android. I will create a separete issue there.

[terfender]

I resolved the issue by adding this:

android/app/build.gradle

configurations.all {
    exclude group: 'io.github.zhongwuzw', module: 'annotation'
}

[XChikuX]

Facing the same issue!

[XChikuX]

configurations.all {
exclude group: 'io.github.zhongwuzw', module: 'annotation'
}

@terfender Where exactly did you add this line?

At the start? Inside android {} ? Where..

EDIT: I tried

apply plugin: "com.android.application"
apply plugin: "com.facebook.react"

configurations.all {
    exclude group: 'io.github.zhongwuzw', module: 'annotation'
}

android {
    namespace "com.yourapp"
    compileSdkVersion rootProject.ext.compileSdkVersion
    // ... rest of android config
}

dependencies {
    // ... your dependencies
}

And it failed with the same bug

[terfender]

And it failed with the same bug

Yea, I applied the code to the root of. the file.
Well, I wish I can help you out but I struggled with this issue for hours. I tried to clean android build and start from scratch.

Here is my clean script:

# Stop any running Gradle daemons
cd android
./gradlew --stop
cd ..


# 1. Delete the problematic autolinking and build directories
rm -rf android/app/build
rm -rf android/app/.cxx
rm -rf android/.cxx
rm -rf android/.gradle
rm -rf android/.idea
rm -rf android/build

# 2. Clean node_modules and reinstall
rm -rf node_modules
rm -rf yarn.lock
touch yarn.lock
yarn install

# 3 Clear all React Native caches
rm -rf $TMPDIR/react-*
rm -rf $TMPDIR/metro-*
rm -rf $TMPDIR/haste-*

# 4. Rebuild from scratch
cd android
./gradlew clean
./gradlew build

[DrZoidberg09]

@mrousavy I have found the issue. It is not originated in this package, but react-native-nitro-fetch. If I remove it, everything builds fine. If I install it again it breaks with the error above. Removing it, it is fine.

[XChikuX]

I have found the issue.

This is a much deeper issue that doesn't originate from one single package. There is an inconsistency in the native dependencies.
I don't use nitro fetch at all and still faced this issue.

[Amurmurmur]

react-native-nitro-fetch

thats what exactly the issue I had

[mrzhiin]

Installing "@react-native-firebase/messaging": "^23.5.0" will also trigger this error.