Android – How to solve (Could not initialize class org.codehaus.groovy.reflection.ReflectionCache) issue in react native

androidreact-native

$ npx react-native run-android
info Running jetifier to migrate libraries to AndroidX. You can disable it using "–no-jetifier" flag.
Jetifier found 864 file(s) to forward-jetify. Using 4 workers…
info Starting JS server…
info Launching emulator…
error Failed to launch the emulator. Reason: Could not start an emulator within 30 seconds.
warn Please launch an emulator manually or connect a device. Otherwise, the app may fail to launch.
info Installing the app…

FAILURE: Build failed with an exception.

  • What went wrong:
    Could not initialize class org.codehaus.groovy.runtime.InvokerHelper

  • Try:
    Run with –stacktrace option to get the stack trace. Run with –info or –debug option to get more log output. Run with –scan to get full insights.

  • Get more help at https://help.gradle.org

BUILD FAILED in 1m 23s

error Failed to install the app. Make sure you have the Android development environment set up: https://facebook.github.io/react-native/docs/getting-started.html#android-development-environment. Run CLI with –verbose flag for more details.
Error: Command failed: gradlew.bat app:installDebug -PreactNativeDevServerPort=8081

FAILURE: Build failed with an exception.

  • What went wrong:
    Could not initialize class org.codehaus.groovy.runtime.InvokerHelper

  • Try:
    Run with –stacktrace option to get the stack trace. Run with –info or –debug option to get more log output. Run with –scan to get full insights.

  • Get more help at https://help.gradle.org

BUILD FAILED in 1m 23s

at checkExecSyncError (child_process.js:629:11)
at execFileSync (child_process.js:647:13)
at runOnAllDevices (E:\work\react-native\AwesomeProject1\node_modules\@react-native-community\cli-platform-android\build\commands\runAndroid\runOnAllDevices.js:94:39)

Best Answer

I think I had the same issue. After installing RN (May 20th, 2020), I bumped into this error. I found this solution on https://github.com/gradle/gradle/issues/10248.

In short:

  1. Go to /android/gradle/wrapper/gradle-wrapper.properties file in your RN project

  2. Find this line that starts with distributionUrl. Change the gradle version into gradle-6.3-all.zip.

In my project, it was:

distributionUrl=https\://services.gradle.org/distributions/gradle-6.0.1-all.zip

and I changed it into:

distributionUrl=https\://services.gradle.org/distributions/gradle-6.3-all.zip

That's it.

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