17 December 2024 Leave a comment Tech-Help
When developing React Native applications, encountering errors is part of the journey. One such common error developers face is the “Could not determine java version from ‘9.0.1’” error. This issue arises during the build process, particularly when running react-native run-android on a MacOS environment.
Understanding the Issue
The error message indicates a problem with the Java Development Kit (JDK) version being used. React Native projects often require specific versions of JDK to function correctly, and using an incompatible version can halt the build process.
Recommended Solutions
Here are some effective strategies to resolve this issue:
1. Update Gradle Version
One of the primary solutions is to update the Gradle version used in your project. This can be done by modifying the gradle-wrapper.properties file located at PROJECT_PATH/android/gradle/wrapper/. Update the distributionUrl to a compatible version, such as:
distributionUrl=https\://services.gradle.org/distributions/gradle-5.0-all.zipThis approach ensures that the build tools are aligned with the JDK version you are using.
2. Revert to JDK 8
If updating Gradle doesn’t resolve the issue, reverting to JDK 8 is a reliable alternative. JDK 8 is widely supported and often recommended for React Native projects. You can download JDK 8 from the official Oracle website and set your JAVA_HOME environment variable to point to this version:
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_151.jdk/Contents/Home3. Adjust Environment Variables
Ensure your environment variables are correctly set. This includes JAVA_HOME and paths related to Android SDK. You can add the following lines to your ~/.bash_profile:
export ANDROID_HOME=$HOME/Library/Android/sdk
export PATH=$PATH:$ANDROID_HOME/tools
export PATH=$PATH:$ANDROID_HOME/tools/bin
export PATH=$PATH:$ANDROID_HOME/platform-tools
export JAVA_HOME=$(/usr/libexec/java_home -v 1.8)After adding these lines, run source ~/.bash_profile to apply the changes.
Enhancing Your Development Workflow
Once you’ve resolved the Java version issue, consider streamlining your testing process with Repeato, a no-code test automation tool designed for iOS and Android applications. Repeato leverages computer vision and AI, making it exceptionally fast to edit and run tests. By integrating Repeato into your workflow, you can efficiently create and maintain automated tests for your React Native apps, ensuring robust performance and reliability.
For more on testing React Native applications, explore our React Native Testing Guide.
