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When I use
implementation 'com.google.firebase:firebase-inappmessaging-display:17.2.0'
in my
app/build.gradle
, I get this error:
Duplicate class com.google.common.util.concurrent.ListenableFuture found in modules guava-20.0.jar (com.google.guava:guava:20.0) and listenablefuture-1.0.jar (com.google.guava:listenablefuture:1.0)
Go to the documentation to learn how to Fix dependency resolution errors.
What I also have in my app/build.gradle is this:
implementation 'com.google.android.gms:play-services-base:16.1.0'
implementation 'com.google.android.gms:play-services-analytics:16.0.8'
implementation 'com.google.android.gms:play-services-awareness:16.0.0'
implementation 'com.google.android.gms:play-services-cast:16.2.0'
implementation 'com.google.android.gms:play-services-gcm:16.1.0'
implementation 'com.google.android.gms:play-services-location:16.0.0'
implementation 'com.google.android.gms:play-services-maps:16.1.0'
implementation 'com.google.firebase:firebase-core:16.0.8'
implementation 'com.google.firebase:firebase-iid:17.1.2'
implementation 'com.google.firebase:firebase-messaging:17.6.0'
implementation 'android.arch.work:work-runtime:1.0.1'
implementation 'com.android.support:multidex:1.0.3'
apply plugin: 'com.google.gms.google-services'
Maybe one of the libraries that I am using already includes support for the In-App Messaging dependency, and then it becomes redundant? Thank you.
2020 Solution
Google knows about this error so they made a special package to fix the conflict.
Add this to your build.gradle
implementation 'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava'
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I found the solution at How to solve Program type already present: com.google.common.util.concurrent.ListenableFuture?. user2297550 said:
I merely added implementation 'com.google.guava:guava:27.0.1-android' at the end of my app gradle file and the error went away.
That was the solution for me. Now I have this and my app compiles correctly:
implementation 'com.google.firebase:firebase-inappmessaging-display:17.2.0'
implementation 'com.google.guava:guava:27.0.1-android'
–
–
–
–
I just came across this when building my Flutter project. Not quite sure why it reared its ugly head, but here I am.
So, if any Flutter devs come across this, @Ray Li's answer worked for me. The build.gradle file that you want to edit is the one in the android/app folder (ie. NOT the one in the android folder).
Just add the implementation 'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava' to the dependencies section at the end of the file, as follows:
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava'
–
–
add this to your gradle file
configurations {
all*.exclude group: 'com.google.guava', module: 'listenablefuture'
I encountered the same problem. I added the line below
implementation 'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava'
This works but I encountered another issue- Cannot fit requested classes in a single dex file (# methods: 89411 > 65536) To resolve this error make sure to enable multiDex as below
defaultConfig {
applicationId "com.techweezy.smartsync"
minSdkVersion 19
targetSdkVersion 29
versionCode 5
versionName "1.4"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
multiDexEnabled true //added this line
Then finally add the below lines.
implementation 'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava'
implementation 'androidx.multidex:multidex:2.0.1'
Reduce duplicated dependencies from your project
For example many dependencies uses support-v4 and appcompat-v7 as included packages and then could be different versions, so you need remove this packages from inside of dependencies and create one compile dependency.
This will remove all included modules of libraries
android {
configurations {
all*.exclude module: 'appcompat-v7'
all*.exclude module: 'support-v4'
Or you can manage throw each dependency to more clear removing packages like this:
dependencies {
implementation ('com.mapbox.mapboxsdk:mapbox-android-sdk:4.2.0@aar') {//depend on your library
transitive = true
exclude group: 'com.android.support', module: 'appcompat-v7'
exclude group: 'com.android.support', module: 'recyclerview-v7'
exclude group: 'com.android.support', module: 'design'
exclude group: 'com.android.support', module: 'support-v4'
exclude group: 'com.squareup.retrofit2' module: 'retrofit'
exclude group: 'com.squareup.retrofit2', module: 'retrofit'
exclude group: 'com.google.code.gson', module: 'gson'
exclude module: 'guava'//add this line if you have build error "found in modules guava-xxx-android.jar"
All of removed dependencies must be declared outside of mapbox in one copy for all libraries uses them.
–
add these two implementations to your app level build.gradle / app/build.gradle
implementation 'com.google.firebase:firebase-inappmessaging-display:17.2.0'
implementation 'com.google.guava:guava:27.0.1-android'
For me, nothing worked. The only thing that fixed it magically was to update the desugaring library to the matching for my AGP version:
coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.2.0'
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