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Exception: Gradle task assembleProfile failed with exit code 1 in Flutter: Causes and How to Fix

February 10, 2025

Discover the causes of the Gradle task assembleProfile error in Flutter and learn effective solutions to fix the exit code 1 issue in your projects.

What is Exception: Gradle task assembleProfile failed with exit code 1 Error in Flutter

 

Understanding 'Gradle task assembleProfile failed with exit code 1' in Flutter

 

  • This error message indicates a problem that originated while trying to assemble a 'Profile' build variant of a Flutter application using Gradle. The exit code '1' is a Unix signal indicating a general error without specifying the nature of the error itself.

    •  

  • The 'assembleProfile' task in Gradle is part of the build process, especially utilized for performance testing between 'Debug' and 'Release' builds. While the 'Debug' build allows for easy debugging and testing, and the 'Release' build is optimized for end-users, the 'Profile' build is intended to analyze and understand app performance under conditions identical to the final product, but with some analytics and debugging capabilities enabled.

 

Common Scenarios of Occurrence

 

  • The issue might surface during a continuous integration/continuous deployment (CI/CD) process, where automated scripts are used to build Flutter apps across multiple configurations such as 'Debug', 'Release', and 'Profile'. It can result from an environmental misconfiguration within those processes.

    •  

  • It may also occur when a developer tries to manually start a profile build through an IDE like Android Studio or through terminal commands using `flutter build profile`.

 

Possible Implications for Development

 

  • Encountering this failure disrupts the development workflow, primarily when performance analysis features are required to profile the application's behavior and performance characteristics. Performance profiling involves evaluating CPU usage, memory footprints, or rendering behavior to optimize the application efficiently.

    •  

  • This failure prevents app builds from progressing beyond the profile stage, halting the developer’s ability to test performance optimizations before releasing the application.

 

Using Debugging Insights

 

  • While the error is seemingly generic, understanding specific build logs through Gradle's verbose output may present additional details. Developers can enable verbose logging by running Gradle commands with `--stacktrace`, `--info`, or `--debug` flags to diagnose other underlying internal errors that might be missed within standard build configurations.

    •  

  • Example of running Gradle with increased verbosity might look like:

 

./gradlew assembleProfile --info

 

  • This detailed information can serve as a useful aid for developers looking to pinpoint specific issues triggering the build failure.

 

Conclusion

 

  • The 'Exception: Gradle task assembleProfile failed with exit code 1' error is indicative of a specific challenge during the Flutter app's build process in profiling mode. Although the root causes can vary, the error effectively signifies an unexplained issue preventing successful completion of the build task.

    •  

  • Diagnosing it requires piecing through build configuration and identifying issues from the Gradle log at greater verbosity, thus allowing developers to address specific hurdles affecting the efficient profiling of their applications.

 

What Causes Exception: Gradle task assembleProfile failed with exit code 1 in Flutter

 

Possible Causes of the Error

 

  • Configuration Issues in Build Scripts: Gradle build scripts might contain errors or conflicts, such as incorrect dependencies, versions mismatches, or misconfigured tasks within your build.gradle files. This can cause the build process to fail.

    •  

  • Dependency Conflicts: Version conflicts between the dependencies specified in your project could lead to runtime issues causing the task to fail. In Flutter projects, such conflicts might arise between Flutter's own packages and the underlying Android dependencies.

    •  

  • Missing or Misconfigured Flutter Plugins: Plugins not configured correctly may cause incompatibilities during the build. For instance, incomplete configuration of Android-specific settings within these plugins may result in the Gradle task failure.

    •  

  • Insufficient Permissions: Certain elements of your app or its build process might require permissions not properly configured, such as file system access or network access, thereby leading to permission-related failures.

    •  

  • Environment and System Issues: Your Flutter, Dart, or Android SDK installations might be incomplete or corrupted. Additionally, JAVA\_HOME environment variable might be improperly set or versions might be incompatible with your current setup.

    •  

  • Java Heap Space Errors: If the Java Virtual Machine (JVM) does not have sufficient memory allocated for the build, especially in larger projects, you may experience memory-related failures.

    •  

  • Network Constraints: Poor network connectivity or offline development environments can sometimes hinder Gradle from resolving dependencies effectively, resulting in build failure.

    •  

  • Unsupported or Deprecated Code: Using outdated code or dependencies that have been deprecated in the newer Flutter or Android versions can disrupt the build process as well.

 

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How to Fix Exception: Gradle task assembleProfile failed with exit code 1 in Flutter

 

Check Flutter Dependencies

 

  • Make sure your `pubspec.yaml` file doesn’t contain any incompatible or deprecated packages. Update dependencies to the latest versions using:

 


flutter pub upgrade

 

  • Ensure there are no unresolved dependencies by running:

 


flutter pub get

 

Delete Gradle Cache

 

  • Navigate to your project’s directory and remove the build directory to clear any corrupted cache:

 


cd android && ./gradlew clean

 

Upgrade Gradle and Android Plugins

 

  • Edit the `android/build.gradle` file and check for the latest version of the Gradle plugin. Update the `classpath` and ensure the distribution URL inside `gradle-wrapper.properties` points to a compatible Gradle version:

 


// Inside android/build.gradle
classpath 'com.android.tools.build:gradle:3.5.4'

 

  • Ensure the Gradle distribution in `gradle-wrapper.properties` is compatible:

 


distributionUrl=https\://services.gradle.org/distributions/gradle-6.7-all.zip

 

Check Java Version Compatibility

 

  • Verify that your JAVA\_HOME environment variable points to a compatible JDK version. For Flutter, JDK 8 is commonly required:

 


echo $JAVA_HOME
// or
java -version

 

  • If necessary, set the JAVA\_HOME variable to the correct path:

 


export JAVA_HOME=/path/to/your/jdk

 

Increase Gradle Memory Allocation

 

  • If you’re having out-of-memory issues, increase the memory allocation for Gradle. Edit `android/gradle.properties` and add or update the following settings:

 


org.gradle.jvmargs=-Xmx1536M

 

Check Flutter Build Configurations

 

  • Ensure that the build configurations in `android/app/build.gradle` are set correctly. Make sure the `compileSdkVersion`, `minSdkVersion`, and `targetSdkVersion` match the requirements of your packages and plugins:

 


android {
    compileSdkVersion 30
    defaultConfig {
        applicationId "com.example.app"
        minSdkVersion 21
        targetSdkVersion 30
    }
}

 

Rebuild the Project

 

  • Finally, try rebuilding your project. Run the following commands in your terminal:

 


flutter clean
flutter build apk --profile

 

  • This should resolve the issue with the Gradle task failing. If the problem persists, review logs and ensure that SDK and dependencies are properly configured.

 

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