Duplicate class com.google.common.util.concurrent.ListenableFuture after BOM update

[REQUIRED] Step 2: Describe your environment

• Android Studio version: 3.6.3
• Firebase Component: Firestore, InAppMessages
• Component version: Firestore: 21.4.3, InAppMessages: 19.0.6

[REQUIRED] Step 3: Describe the problem

Bumping the firebase-bom from 24.5.0 -> 25.3.1 to be able to use Firebase Kotlin Extensions ends up in dependencies error

Steps to reproduce:

Create brand new Android Studio project including below dependencies:

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.core:core-ktx:1.2.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation platform('com.google.firebase:firebase-bom:25.3.1')
    implementation "com.google.firebase:firebase-inappmessaging-display-ktx"
    implementation "com.google.firebase:firebase-firestore-ktx"
    implementation "androidx.browser:browser:1.2.0"
    implementation "androidx.work:work-runtime-ktx:2.4.0-alpha03"
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

When you try to build and run the project below error occurs:

Duplicate class com.google.common.util.concurrent.ListenableFuture found in modules jetified-guava-26.0-android.jar (com.google.guava:guava:26.0-android) and jetified-listenablefuture-1.0.jar (com.google.guava:listenablefuture:1.0)

[davidmotson]

Update: Due to some unforseen conflicts that those changes have with other firebase libraries we are delaying this fix so it can be properly tested. I’ll post back here as it progresses. For now, anyone seeing this issue should add

implementation 'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava' to their dependencies

[ashwinraghav]

Hey @KonradSzewczuk

The goal of introducing com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava was to allow some androidx libraries to take a dependency on listenable future without taking a dependency on the entirety of guava.

This allows you to have both newer versions of guava and the androidX library (in your case browser) in your classpath without any duplicate class files.

The challenge we are facing is that the version of gRPC that Firebase libs depend on brings in a version of guava that is not new enough. And upgrading gRPC across the board in Firebase SDKs is non trivial https://github.com/firebase/firebase-android-sdk/pull/1534.

We hope to land that change in the coming weeks. Please unblock yourself by including `implementation ‘com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava’ in your build. While counterintuitive It is safe to continue having depending on it even after you pick up our fixes.

Please track #1152 going forward