Duplicate zip entry [classes.jar:android/support/design/widget/CoordinatorLayout$Behavior.class]

Question

I have following dependency and getting CoordinatorLayout$Behavior duplicate entry. I have searched so more but did not find any solution.

I am getting

Answer 1

Run this to view app dependencies

gradlew -q :app:dependencies > dependencies.txt

It will output a big tree, where:

• (*) is used to indicate that particular dependency is described somewhere else in the tree
• -> (arrow) is used to point the dependency that wins in version conflict. By default, gradle chooses the newest version.

Output:

+--- com.android.support:design:26.1.0
|    +--- com.android.support:support-v4:26.1.0 (*)
|    +--- com.android.support:appcompat-v7:26.1.0 -> 27.1.1 (*)
|    +--- com.android.support:recyclerview-v7:26.1.0 (*)
|    \--- com.android.support:transition:26.1.0
|         +--- com.android.support:support-annotations:26.1.0 -> 27.1.1
|         \--- com.android.support:support-v4:26.1.0 (*)

In my case I found that com.android.support:design:26.1.0 was depending on com.android.support:appcompat-v7:26.1.0 -> 27.1.1 (*), which resolved to 27.1.1 instead of 26.1.0

Solution Force version 26.1.0 by declaring in gradle compile ("com.android.support:appcompat-v7:26.1.0") { force = true }

References

• How to understand the output of command 'gradle dependencies'?
• Gradle: how to display where a dependency conflict arises
• Understanding and dominating gradle dependencies