I am facing the following issue in my Flutter project:

Unable to load class 'com.android.build.api.dsl.ApplicationExtension' com.android.build.api.dsl.ApplicationExtension

Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)

Re-download dependencies and sync project (requires network) The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.

Stop Gradle build processes (requires restart) Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.

In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

This project runs fine in debug mode on Chrome using flutter run -d chrome, but when I try to run flutter build apk --debug, I get this Gradle error.

How can I fix this issue?

I tried the following solutions:

Re-downloading dependencies – I clicked on the option to re-download dependencies and sync the project, expecting it to resolve any corrupt Gradle cache issues. However, the error persisted.

Stopping Gradle Daemons – I stopped all Gradle build processes and restarted the project, hoping it would fix any corrupt Gradle processes, but the issue remained.

Checking for Plugin Compatibility – I verified that all third-party plugins in my pubspec.yaml were compatible with the Flutter and Gradle versions I was using. Still, the error didn't go away.

Manually Killing Java Processes – I closed the IDE and manually killed all Java processes, expecting a fresh Gradle build on restart. Unfortunately, the error persisted.

I was expecting one of these steps to resolve the issue, but none of them worked. How can I fix this error?

I am facing the following issue in my Flutter project:

Unable to load class 'com.android.build.api.dsl.ApplicationExtension' com.android.build.api.dsl.ApplicationExtension

Gradle's dependency cache may be corrupt (this sometimes occurs after a network connection timeout.)

Re-download dependencies and sync project (requires network) The state of a Gradle build process (daemon) may be corrupt. Stopping all Gradle daemons may solve this problem.

Stop Gradle build processes (requires restart) Your project may be using a third-party plugin which is not compatible with the other plugins in the project or the version of Gradle requested by the project.

In the case of corrupt Gradle processes, you can also try closing the IDE and then killing all Java processes.

This project runs fine in debug mode on Chrome using flutter run -d chrome, but when I try to run flutter build apk --debug, I get this Gradle error.

How can I fix this issue?

I tried the following solutions:

Re-downloading dependencies – I clicked on the option to re-download dependencies and sync the project, expecting it to resolve any corrupt Gradle cache issues. However, the error persisted.

Stopping Gradle Daemons – I stopped all Gradle build processes and restarted the project, hoping it would fix any corrupt Gradle processes, but the issue remained.

Checking for Plugin Compatibility – I verified that all third-party plugins in my pubspec.yaml were compatible with the Flutter and Gradle versions I was using. Still, the error didn't go away.

Manually Killing Java Processes – I closed the IDE and manually killed all Java processes, expecting a fresh Gradle build on restart. Unfortunately, the error persisted.

I was expecting one of these steps to resolve the issue, but none of them worked. How can I fix this error?

• android
• flutter
• gradle
• build
• dependencies

1 Answer 1

For your explanation if it is the issue of Gradle then, these steps below will hard reset gradle. Please try it out.

In the android/gradle/wrapper/gradle-wrapper.properties, update the gradle version to:

distributionUrl=https\://services.gradle./distributions/gradle-8.9-all.zip

Run these commands on terminal to remove gradle from your project:

rm -rf android/.gradle

If you are using MacBook then gradle also gets downloaded in the following folder, please delete that too.

/Users/<user_name>/.gradle

This is what I would do if I came across the same issue.

In addtion,

• Make sure you have JDK 11 or later installed.

• JAVA_HOME should point to the correct Java installation directory.

If these do not work then, share both of your build.gradle files.