Inconsistent JVM-target compatibility detected for tasks 'compileDebugJavaWithJavac' (1.8) and 'compileDebugKotlin' (17).

Hi, after upgrading to the latest flutter plugin I get this error on compiling the module Here is my build.gradle config ... android { compileSdkVersion 34 ndkVersion flutter.ndkVersion

compileOptions {
    sourceCompatibility JavaVersion.VERSION_11
    targetCompatibility JavaVersion.VERSION_11
}

kotlinOptions {
    jvmTarget = '11'
}

sourceSets {
    main.java.srcDirs += 'src/main/kotlin'
}

...

The complete error is Execution failed for task ':video_compress:compileDebugKotlin'.

Inconsistent JVM-target compatibility detected for tasks 'compileDebugJavaWithJavac' (1.8) and 'compileDebugKotlin' (17).

Dart plugin: 231.9411 Flutter plugin: 77.2.1 Flutter version 3.13.9 Dart version 3.1.5

Thanks Carlo

After further research it turns out that the error appears useing kotlin >=1.8.0 but as my app uses com.google.gms.google-services which is compiled with a newer version of kotlin, it ends up with: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.9.0, expected version is 1.7.1

So, could you please update the plugin with a new version of kotlin in the build.gradle file with at least ext.kotlin_version = '1.7.10'? Thanks Carlo

Encountering the same issue in my project. Seems like this PR should solve this, but there has been no action since October 😬

@tomcatvr check out this comment, seems to be working as a workaround for me at the moment!

@tomcatvr check out this comment, seems to be working as a workaround for me at the moment!

@adigladi Thanks very much, it worked!

This looks totally different than what I use (https://github.com/flutter/flutter/issues/125181#issuecomment-1555034383) I use version 34 and 1.8

This is the error I get

FAILURE: Build failed with an exception.

What went wrong: Execution failed for task ':video_compress:compileDebugKotlin'.

Inconsistent JVM-target compatibility detected for tasks 'compileDebugJavaWithJavac' (1.8) and 'compileDebugKotlin' (17).

Consider using JVM Toolchain: https://kotl.in/gradle/jvm/toolchain Learn more about JVM-target validation: https://kotl.in/gradle/jvm/target-validation
Try:

Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. Get more help at https://help.gradle.org.

BUILD FAILED in 5m 12s Error: Gradle task assembleDebug failed with exit code 1

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-gradle-plugin" version "1.0.0" apply false
}

}

plugins { id "dev.flutter.flutter-plugin-loader" version "1.0.0" id "com.android.application" version "7.3.1" apply false }

include ":app"

android\build.gradle

buildscript { //https://kotlinlang.org/docs/releases.html#ide-support // ext.kotlin_version = '1.7.10' // ext.kotlin_version = '1.9.21' ext.kotlin_version = '1.9.22'

repositories {
    google()
    mavenCentral()
}

dependencies {

// 7_2_0 // classpath 'com.android.tools.build:gradle:7.3.1'
classpath 'com.android.tools.build:gradle:8.4.0'

    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

// classpath 'com.google.gms:google-services:4.3.15' classpath 'com.google.gms:google-services:4.4.1' // classpath 'com.google.gms:google-services:4.3.15'

    // Add the Crashlytics Gradle plugin
    //2_9_2
    classpath 'com.google.firebase:firebase-crashlytics-gradle:2.9.9'
    // Add the dependency for the Performance Monitoring Gradle plugin
    classpath 'com.google.firebase:perf-plugin:1.4.2'

}

}

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 }

app\build.gradle

plugins { id "com.android.application" id "kotlin-android" id "dev.flutter.flutter-gradle-plugin" }

def localProperties = new Properties() def localPropertiesFile = rootProject.file('local.properties') if (localPropertiesFile.exists()) { localPropertiesFile.withReader('UTF-8') { reader -> localProperties.load(reader) } }

def flutterVersionCode = localProperties.getProperty('flutter.versionCode') if (flutterVersionCode == null) { flutterVersionCode = '1' }

def flutterVersionName = localProperties.getProperty('flutter.versionName') if (flutterVersionName == null) { flutterVersionName = '1.0' }

//apply plugin: 'com.android.application'
//apply plugin: 'kotlin-android'
//apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
apply plugin: 'com.google.gms.google-services' // Apply the Firebase Crashlytics Gradle plugin apply plugin: 'com.google.firebase.crashlytics' //Apply the Firebase Performance Gradle plugin apply plugin: 'com.google.firebase.firebase-perf'

android { namespace "com.app.app" compileSdkVersion 34 // compileSdkVersion flutter.compileSdkVersion ndkVersion flutter.ndkVersion

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}

kotlinOptions {
    jvmTarget = '1.8'
}

sourceSets {
    main.java.srcDirs += 'src/main/kotlin'
}

defaultConfig {
    // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
    applicationId "com.app.app"
    // You can update the following values to match your application needs.
    // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.

// minSdkVersion flutter.minSdkVersion // targetSdkVersion flutter.targetSdkVersion versionCode flutterVersionCode.toInteger() versionName flutterVersionName minSdkVersion 24 targetSdkVersion 34 multiDexEnabled true }

signingConfigs {
    release {

// storeFile file('H:\FlutterPlaystore\app\key.jks') storeFile file('H:/FlutterPlaystore/app/key.jks') storePassword 'password' keyAlias 'alias' keyPassword 'password' } }

buildTypes {
    release {
        // TODO: Add your own signing config for the release build.
        // Signing with the debug keys for now, so `flutter run --release` works.
        signingConfig signingConfigs.debug

// signingConfig signingConfigs.release

}
}

}

flutter { source '../..' }

dependencies { implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"

// implementation 'com.android.support:multidex:1.0.3' implementation "androidx.multidex:multidex:2.0.1"

// Import the BoM for the Firebase platform

// implementation platform('com.google.firebase:firebase-bom:31.1.1') implementation(platform("com.google.firebase:firebase-bom:32.7.0")) // implementation(platform("com.google.firebase:firebase-bom:33.1.0")) // Add the dependency for the Performance Monitoring library // When using the BoM, you don't specify versions in Firebase library dependencies implementation 'com.google.firebase:firebase-perf' // Declare the dependencies for the Crashlytics and Analytics libraries // When using the BoM, you don't specify versions in Firebase library dependencies implementation 'com.google.firebase:firebase-crashlytics' implementation 'com.google.firebase:firebase-analytics'

}

gradle-wrapper.properties

distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=https://services.gradle.org/distributions/gradle-8.6-all.zip

I followed instructions from record pubdev which also causes similar problems

https://github.com/llfbandit/record/issues/333

But after solving record pubdev problem the problem for video_compress appeared, I don't understand what I should change in these classes I posted according to the advice provided above by @tomcatvr

This looks totally different than what I use (flutter/flutter#125181 (comment)) I use version 34 and 1.8

This is the error I get

FAILURE: Build failed with an exception.
* What went wrong:
  Execution failed for task ':video_compress:compileDebugKotlin'.
Inconsistent JVM-target compatibility detected for tasks 'compileDebugJavaWithJavac' (1.8) and 'compileDebugKotlin' (17).

Consider using JVM Toolchain: https://kotl.in/gradle/jvm/toolchain Learn more about JVM-target validation: https://kotl.in/gradle/jvm/target-validation
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights. Get more help at https://help.gradle.org.

BUILD FAILED in 5m 12s Error: Gradle task assembleDebug failed with exit code 1

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-gradle-plugin" version "1.0.0" apply false
}
}

plugins { id "dev.flutter.flutter-plugin-loader" version "1.0.0" id "com.android.application" version "7.3.1" apply false }

include ":app"

android\build.gradle

buildscript { //https://kotlinlang.org/docs/releases.html#ide-support // ext.kotlin_version = '1.7.10' // ext.kotlin_version = '1.9.21' ext.kotlin_version = '1.9.22'
repositories {
    google()
    mavenCentral()
}

dependencies {
// 7_2_0 // classpath 'com.android.tools.build:gradle:7.3.1' classpath 'com.android.tools.build:gradle:8.4.0'
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
// classpath 'com.google.gms:google-services:4.3.15' classpath 'com.google.gms:google-services:4.4.1' // classpath 'com.google.gms:google-services:4.3.15'
    // Add the Crashlytics Gradle plugin
    //2_9_2
    classpath 'com.google.firebase:firebase-crashlytics-gradle:2.9.9'
    // Add the dependency for the Performance Monitoring Gradle plugin
    classpath 'com.google.firebase:perf-plugin:1.4.2'

}
}

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 }

app\build.gradle

plugins { id "com.android.application" id "kotlin-android" id "dev.flutter.flutter-gradle-plugin" }

def localProperties = new Properties() def localPropertiesFile = rootProject.file('local.properties') if (localPropertiesFile.exists()) { localPropertiesFile.withReader('UTF-8') { reader -> localProperties.load(reader) } }

def flutterVersionCode = localProperties.getProperty('flutter.versionCode') if (flutterVersionCode == null) { flutterVersionCode = '1' }

def flutterVersionName = localProperties.getProperty('flutter.versionName') if (flutterVersionName == null) { flutterVersionName = '1.0' }

//apply plugin: 'com.android.application' //apply plugin: 'kotlin-android' //apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle" apply plugin: 'com.google.gms.google-services' // Apply the Firebase Crashlytics Gradle plugin apply plugin: 'com.google.firebase.crashlytics' //Apply the Firebase Performance Gradle plugin apply plugin: 'com.google.firebase.firebase-perf'

android { namespace "com.app.app" compileSdkVersion 34 // compileSdkVersion flutter.compileSdkVersion ndkVersion flutter.ndkVersion
compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}

kotlinOptions {
    jvmTarget = '1.8'
}

sourceSets {
    main.java.srcDirs += 'src/main/kotlin'
}

defaultConfig {
    // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
    applicationId "com.app.app"
    // You can update the following values to match your application needs.
    // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
// minSdkVersion flutter.minSdkVersion // targetSdkVersion flutter.targetSdkVersion versionCode flutterVersionCode.toInteger() versionName flutterVersionName minSdkVersion 24 targetSdkVersion 34 multiDexEnabled true }
signingConfigs {
    release {
// storeFile file('H:\FlutterPlaystore\app\key.jks') storeFile file('H:/FlutterPlaystore/app/key.jks') storePassword 'password' keyAlias 'alias' keyPassword 'password' } }
buildTypes {
    release {
        // TODO: Add your own signing config for the release build.
        // Signing with the debug keys for now, so `flutter run --release` works.
        signingConfig signingConfigs.debug
// signingConfig signingConfigs.release
    }
}
}

flutter { source '../..' }

dependencies { implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"

// implementation 'com.android.support:multidex:1.0.3' implementation "androidx.multidex:multidex:2.0.1"
// Import the BoM for the Firebase platform
// implementation platform('com.google.firebase:firebase-bom:31.1.1') implementation(platform("com.google.firebase:firebase-bom:32.7.0")) // implementation(platform("com.google.firebase:firebase-bom:33.1.0")) // Add the dependency for the Performance Monitoring library // When using the BoM, you don't specify versions in Firebase library dependencies implementation 'com.google.firebase:firebase-perf' // Declare the dependencies for the Crashlytics and Analytics libraries // When using the BoM, you don't specify versions in Firebase library dependencies implementation 'com.google.firebase:firebase-crashlytics' implementation 'com.google.firebase:firebase-analytics'

}

gradle-wrapper.properties

distributionBase=GRADLE_USER_HOME

distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=https://services.gradle.org/distributions/gradle-8.6-all.zip

I followed instructions from record pubdev which also causes similar problems

llfbandit/record#333

But after solving record pubdev problem the problem for video_compress appeared, I don't understand what I should change in these classes I posted according to the advice provided above by @tomcatvr

@Megatronicus have you found any solution to your problem? I am encountering the same issue and I have been stuck on this for a week, I need help.

try upgrade org.jetbrains.kotlin.android to latest version:

- id "org.jetbrains.kotlin.android" version "1.7.10" apply false
+ id "org.jetbrains.kotlin.android" version "1.9.24" apply false

This is what fixed it for me. I recognise that this is probably a hack, covering up the real issue, but maybe it'll get you out of Java Jail:

Top level build.gradle file:

allprojects {
    repositories {
        google()
        mavenCentral()
    }

    // Added this block:
    afterEvaluate { project ->
        if (project.hasProperty("kotlin")) {
            project.tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all {
                kotlinOptions {
                    jvmTarget = "1.8"
                }
            }
        }
    }
}

jonataslaw / VideoCompress

Inconsistent JVM-target compatibility detected for tasks 'compileDebugJavaWithJavac' (1.8) and 'compileDebugKotlin' (17). #255

distributionBase=GRADLE_USER_HOME distributionPath=wrapper/dists zipStoreBase=GRADLE_USER_HOME zipStorePath=wrapper/dists distributionUrl=https://services.gradle.org/distributions/gradle-8.6-all.zip

distributionBase=GRADLE_USER_HOME