android build_error ai_generated true

Execution failed for task ':app:transformClassesWithJarMergingForDebug'. > com.android.build.api.transform.TransformException: java.util.zip.ZipException: duplicate entry: com/google/common/collect/ImmutableList.class

ID: android/gradle-task-assemble-debug-failed-jetifier

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80%Fix Rate
82%Confidence
1Evidence
2023-08-05First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Android Gradle Plugin 8.1 active — — —
Gradle 8.2 active — — —
Jetifier 1.0.0-beta10 active — — —
Android Studio Hedgehog 2023.1.1 active — — —

Root Cause

Duplicate class found in multiple dependencies, often due to Jetifier converting both support libraries and AndroidX, or two libraries shipping the same class.

generic

中文

多个依赖中发现重复类，通常是由于 Jetifier 同时转换了支持库和 AndroidX，或者两个库提供了相同的类。

Official Documentation

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

Workarounds

  1. 85% success Run `./gradlew :app:dependencies --configuration debugCompileClasspath` to identify which libraries bring the duplicate class. Then exclude the transitive dependency in build.gradle: implementation('com.example:library:1.0') { exclude group: 'com.google.guava', module: 'guava' } 
    Run `./gradlew :app:dependencies --configuration debugCompileClasspath` to identify which libraries bring the duplicate class. Then exclude the transitive dependency in build.gradle: implementation('com.example:library:1.0') { exclude group: 'com.google.guava', module: 'guava' }
  2. 80% success Upgrade all dependencies to their AndroidX versions and disable Jetifier in gradle.properties: android.jetifier.enabled=false 
    Upgrade all dependencies to their AndroidX versions and disable Jetifier in gradle.properties: android.jetifier.enabled=false
  3. 75% success Use the `com.google.guava:guava:30.1.1-android` variant which avoids conflicts with other Android libraries. 
    Use the `com.google.guava:guava:30.1.1-android` variant which avoids conflicts with other Android libraries.

中文步骤

  1. Run `./gradlew :app:dependencies --configuration debugCompileClasspath` to identify which libraries bring the duplicate class. Then exclude the transitive dependency in build.gradle: implementation('com.example:library:1.0') { exclude group: 'com.google.guava', module: 'guava' }
  2. Upgrade all dependencies to their AndroidX versions and disable Jetifier in gradle.properties: android.jetifier.enabled=false
  3. Use the `com.google.guava:guava:30.1.1-android` variant which avoids conflicts with other Android libraries.

Dead Ends

Common approaches that don't work:

  1. 70% fail

    Disabling Jetifier entirely may cause other libraries to break if they still depend on support libraries.

  2. 65% fail

    Adding an exclude statement in packagingOptions for the duplicate class often masks the root cause and may remove needed functionality.

  3. 60% fail

    Using a newer version of the dependency without checking its transitive dependencies may introduce more duplicates.