19 December 2024 Leave a comment Tech-Help
Developers working on Flutter projects on Apple Silicon Macs may encounter a specific error message: “Unsupported class file major version 61.” This issue typically arises when there is a mismatch between your Java version and the Gradle version used in your project. In this guide, we will walk you through effective solutions to resolve this error, ensuring a smooth development experience.
Understanding the Problem
The error message “Unsupported class file major version 61” indicates that the Java version being used is not compatible with the Gradle version specified in your project. This is often due to using a Java version that is too recent for the current Gradle setup. The Java version 17 and later are not supported by older versions of Gradle, which is a common pitfall for developers using the latest Java updates.
Solution Overview
The most effective solution involves adjusting your project’s Gradle setup to be compatible with your Java version. Here are the steps to achieve this:
Step 1: Check Your Current Java Version
First, determine the Java version currently installed on your system. You can do this by running the following command in your terminal:
java -versionStep 2: Adjust Your Gradle Version
Once you have identified your Java version, you need to ensure that your Gradle version supports it. Gradle version 7.3 and onwards supports Java 17. Modify the gradle-wrapper.properties file in your project to use a compatible Gradle version:
distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zipEnsure that this URL reflects the correct Gradle version for your Java setup.
Step 3: Update Gradle Settings in Android Studio
Open your Flutter project’s Android module in Android Studio and navigate to:
- File > Project Structure > Project
- Update the Gradle JDK to match the installed Java version.
Additional Tips
If you continue to experience issues after making these changes, consider clearing your Gradle cache and reinstalling it using the command:
./gradlew wrapperAlso, ensure that your Android Studio is updated to the latest version, which might resolve compatibility issues automatically.
How Repeato Can Help
For developers working on mobile applications, maintaining an efficient testing process is crucial. Our product, Repeato, offers a no-code test automation solution specifically for iOS and Android apps. It uses computer vision and AI to create, run, and maintain automated tests quickly and efficiently. By integrating Repeato into your workflow, you can streamline the testing process, ensuring your applications perform flawlessly across different environments.
For more detailed guidance on setting up virtual test devices or handling test exceptions, please visit our documentation page.
