How can I fix this error with ButterKnife in Android Studio?

Question

Building succeeds, but running on an emulator fails with this message in the console:

Cause: superclass access check failed: class butterknife.compiler.ButterKnifeProcessor$RScanner (in unnamed module @0x65e8e2f6) cannot access class com.sun.tools.javac.tree.TreeScanner (in module jdk.compiler) because module jdk.compiler does not export com.sun.tools.javac.tree to unnamed module @0x65e8e2f6

What I've tried: Removing Butterknife from Gradle, syncing, adding back, syncing again. Removing the Butterknife lib completely which doesn't produce this error on-compile, but obviously fails to compile due to missing Butterknife.

My environment: Butterknife 10.2.3 Android Grade Plugin Version: 7.1.2 - Gradle Version: 7.2 - Android Studio Bumblebee

I've read that this error happens with other libraries in some rare cases that seem unrelated to mine and I still haven't found a solution. I'm aware the Butterknife is deprecated and I should migrate to ViewBinding, but that's a big task to convert this entire project to at the moment. Thanks!

Answer 1

You should compile with a different jdk, I was compiling with a jdk which was too advanced. Reverting it to jdk11 solved it for me

Answer 2

Please use JDK 11. though we are setting the Gradle JDK as jdk11 or correto 11, Android studio is not recognizing that.

Solution:

1. in your terminal type java --version to see it if is showing as JDK 11

2. If the version is not JDK 11, then set the JAVA_HOME env variable export JAVA_HOME=/Users/${echo $USER}/documents/Android\Studio.app/Contents/jre/Contents/Home

3. in your terminal type java --version to see it if is showing as JDK 11.

Answer 3

Using ideas from answers above and using Android Studio: File | Settings | Build, Execution, Deployment | Build Tools | Gradle. Gradle JDK -> Android Studio default JDK (version 11.0.13...)

On Windows, to build from terminal, also had to add

JAVA_HOME=C:\Program Files\Android\Android Studio\jre

To the File | Settings | Terminal | Environment variables