flutter build apk results in "Module was compiled with an incompatible version of Kotlin..."

[michaelokonji]

Description

flutter run works, but flutter build apk returns error for amplify kotlin module versions incompatibility.

Please help.

PS C:\Users\mich\workspaces\dev\app> flutter build apk
Font asset "MaterialIcons-Regular.otf" was tree-shaken, reducing it from 1645184 to 1424 bytes (99.9% reduction). Tree-shaking can be disabled by providing the --no-tree-shake-icons flag when building your app.
e: C:/Users/mich/workspaces/dev/app/build/amplify_secure_storage/.transforms/882fc968585de2a39939a5ade8ba94a7/transformed/out/jars/classes.jar!/META-INF/amplify_secure_storage_release.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.6.0.
e: C:/Users/mich/workspaces/dev/app/build/amplify_analytics_pinpoint/.transforms/86ba004b69ab9b970b47a9b61df31275/transformed/out/jars/classes.jar!/META-INF/amplify_analytics_pinpoint_release.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.6.0.
e: C:/Users/mich/workspaces/dev/app/build/amplify_db_common/.transforms/5f76e43e93e3d2d06d16b288304d908d/transformed/out/jars/classes.jar!/META-INF/amplify_db_common_release.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.6.0.
e: C:/Users/mich/workspaces/dev/app/build/amplify_auth_cognito/.transforms/ed980aea3cd907e9d20b8ec694411005/transformed/out/jars/classes.jar!/META-INF/amplify_auth_cognito_release.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.6.0.
e: C:/Users/mich/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.9.10/72812e8a368917ab5c0a5081b56915ffdfec93b7/kotlin-stdlib-1.9.10.jar!/META-INF/kotlin-stdlib.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.6.0.
e: C:/Users/mich/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.9.10/72812e8a368917ab5c0a5081b56915ffdfec93b7/kotlin-stdlib-1.9.10.jar!/META-INF/kotlin-stdlib-jdk8.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.6.0.
e: C:/Users/mich/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.9.10/72812e8a368917ab5c0a5081b56915ffdfec93b7/kotlin-stdlib-1.9.10.jar!/META-INF/kotlin-stdlib-jdk7.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.6.0.
e: C:/Users/mich/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.9.10/dafaf2c27f27c09220cee312df10917d9a5d97ce/kotlin-stdlib-common-1.9.10.jar!/META-INF/kotlin-stdlib-common.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.6.0.
Running Gradle task 'assembleRelease'...                           70.3s
√  Built build\app\outputs\flutter-apk\app-release.apk (58.6MB).
PS C:\Users\mich\workspaces\dev\app>

Categories

• Analytics
• API (REST)
• API (GraphQL)
• Auth
• Authenticator
• DataStore
• Notifications (Push)
• Storage

Steps to Reproduce

• pubspec.yaml

name: app
description: "A new Flutter project."
publish_to: 'none' # Remove this line if you wish to publish to pub.dev

version: 1.0.0+1

environment:
  sdk: '>=3.3.4 <4.0.0'

dependencies:
  flutter:
    sdk: flutter
  amplify_auth_cognito: ^1.8.0
  amplify_flutter: ^1.8.0    
  logger: ^2.2.0
  cupertino_icons: ^1.0.6  

dev_dependencies:
  flutter_test:
    sdk: flutter
  mocktail: ^1.0.3
  integration_test:
    sdk: flutter    
  flutter_lints: ^3.0.0

flutter:
  uses-material-design: true
  assets:
    - assets/globe_logo.png

• settings.gradle

pluginManagement {
    def flutterSdkPath = {
        def properties = new Properties()
        file("local.properties").withInputStream { properties.load(it) }
        def flutterSdkPath = properties.getProperty("flutter.sdk")
        assert flutterSdkPath != null, "flutter.sdk not set in local.properties"
        return flutterSdkPath
    }
    settings.ext.flutterSdkPath = flutterSdkPath()

    includeBuild("${settings.ext.flutterSdkPath}/packages/flutter_tools/gradle")

    repositories {
        google()
        mavenCentral()
        gradlePluginPortal()
    }
}

plugins {
    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
    id "com.android.application" version "7.3.0" apply false
    id "org.jetbrains.kotlin.android" version "1.9.10" apply false
}

include ":app"

• build.gradle

buildscript {
    ext.kotlin_version = '1.9.10'
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:8.1.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        google()
        mavenCentral()
    }
}

rootProject.buildDir = '../build'
subprojects {
    project.buildDir = "${rootProject.buildDir}/${project.name}"
}
subprojects {
    project.evaluationDependsOn(':app')
}

tasks.register("clean", Delete) {
    delete rootProject.buildDir
}

• gradle-wrapper.properties

distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.1-all.zip

Screenshots

No response

Platforms

• iOS
• Android
• Web
• macOS
• Windows
• Linux

Flutter Version

3.19.6

Amplify Flutter Version

1.8.0

Deployment Method

Amplify CLI

Schema

No response

[Jordan-Nelson]

@michaelokonji I think those may be warnings. The command seems to complete as it finishes with √ Built build\app\outputs\flutter-apk\app-release.apk (58.6MB).

Do you see an apk in that directory? You should be able to install it on your device with flutter install

[michaelokonji]

@Jordan-Nelson You're correct, the build completes and app-release.apk is in the specified path but I'm uncertain if I can safely ignore these and move forward with with my release.

[Jordan-Nelson]

@michaelokonji - Thanks for the update. We will take a look at warnings and get back to you.

[harini18]

When I run flutter build appbundle --release
I get

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':amplify_db_common:compileReleaseJavaWithJavac'.

error: invalid source release: 17

My pubspec.yml

dependencies:
amplify_auth_cognito: ^2.0.0
amplify_authenticator: ^2.0.0
amplify_flutter: ^2.0.0

settings.gradle

plugins {
id "dev.flutter.flutter-plugin-loader" version "1.0.0"
id "com.android.application" version "7.4.2" apply false
id "org.jetbrains.kotlin.android" version "1.9.10" apply false
}

[NikaHsn]

thank you for providing these details. we will look into this issue and get back to you with any updates.

[Jordan-Nelson]

@harini18 - Do you mind opening a separate issue so that we can keep this issue focused on the "incompatible version of kotlin" warning?