Hard to build an APK when using this package

[ThomasGysemans]

Checklist

• I read the troubleshooting guide before raising this issue
• I made sure that the issue I am raising doesn't already exist

Current bug behaviour

It is impossible to use this package when building an APK of a Flutter app.

I tried to build an APK as explained on the official documentation and I get an extremely annoying error.

I use this command:

flutter clean && flutter pub get && flutter build apk

Which gives a warning (but the build goes on):

e: /Users/thomasgysemans/Documents/tests/training-flutter/audioplayers_damn/build/audioplayers_android/.transforms/024e0c07a14a0a85f0f6697a5b55328a/transformed/out/jars/classes.jar!/META-INF/audioplayers_android_release.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.8.0, expected version is 1.6.0.
e: /Users/thomasgysemans/.gradle/caches/transforms-3/9d8fb97b2a99c1b1d78bd925837bcbf3/transformed/core-1.10.1/jars/classes.jar!/META-INF/core_release.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.8.0, expected version is 1.6.0.
e: /Users/thomasgysemans/.gradle/caches/modules-2/files-2.1/androidx.annotation/annotation-jvm/1.6.0/a7257339a052df0f91433cf9651231bbb802b502/annotation-jvm-1.6.0.jar!/META-INF/annotation.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.8.0, expected version is 1.6.0.
e: /Users/thomasgysemans/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.8.10/6d5560a229477df9406943d5feda5618e98eb64c/kotlin-stdlib-1.8.10.jar!/META-INF/kotlin-stdlib.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.8.0, expected version is 1.6.0.
e: /Users/thomasgysemans/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.8.10/6d5560a229477df9406943d5feda5618e98eb64c/kotlin-stdlib-1.8.10.jar!/META-INF/kotlin-stdlib-jdk8.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.8.0, expected version is 1.6.0.
e: /Users/thomasgysemans/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.8.10/6d5560a229477df9406943d5feda5618e98eb64c/kotlin-stdlib-1.8.10.jar!/META-INF/kotlin-stdlib-jdk7.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.8.0, expected version is 1.6.0.
e: /Users/thomasgysemans/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.8.10/a61b182458550492c12aee66157d7b524a63a5ec/kotlin-stdlib-common-1.8.10.jar!/META-INF/kotlin-stdlib-common.kotlin_module: Module was compiled with an incompatible version of Kotlin. The binary version of its metadata is 1.8.0, expected version is 1.6.0.

On the result, the audio player just doesn't appear (it raises an exception).

Expected behaviour

The error should not appear.

Steps to reproduce

• Create a new Flutter Mobile App

• Install the package audioplayers (version 5.0.0)

• Set theminSdkVersion to 23 as advised here

• I run the app on a Android device:

flutter run

That's when I got this build error:

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:checkDebugDuplicateClasses'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable
   > Duplicate class kotlin.collections.jdk8.CollectionsJDK8Kt found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.internal.jdk7.JDK7PlatformImplementations found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk7-1.7.10 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10)
     Duplicate class kotlin.internal.jdk7.JDK7PlatformImplementations$ReflectSdkVersion found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk7-1.7.10 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10)
     Duplicate class kotlin.internal.jdk8.JDK8PlatformImplementations found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.internal.jdk8.JDK8PlatformImplementations$ReflectSdkVersion found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.io.path.ExperimentalPathApi found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk7-1.7.10 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10)
     Duplicate class kotlin.io.path.PathRelativizer found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk7-1.7.10 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10)
     Duplicate class kotlin.io.path.PathsKt found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk7-1.7.10 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10)
     Duplicate class kotlin.io.path.PathsKt__PathReadWriteKt found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk7-1.7.10 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10)
     Duplicate class kotlin.io.path.PathsKt__PathUtilsKt found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk7-1.7.10 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10)
     Duplicate class kotlin.jdk7.AutoCloseableKt found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk7-1.7.10 (org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.7.10)
     Duplicate class kotlin.jvm.jdk8.JvmRepeatableKt found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.random.jdk8.PlatformThreadLocalRandom found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.streams.jdk8.StreamsKt found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.streams.jdk8.StreamsKt$asSequence$$inlined$Sequence$1 found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.streams.jdk8.StreamsKt$asSequence$$inlined$Sequence$2 found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.streams.jdk8.StreamsKt$asSequence$$inlined$Sequence$3 found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.streams.jdk8.StreamsKt$asSequence$$inlined$Sequence$4 found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.text.jdk8.RegexExtensionsJDK8Kt found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)
     Duplicate class kotlin.time.jdk8.DurationConversionsJDK8Kt found in modules jetified-kotlin-stdlib-1.8.10 (org.jetbrains.kotlin:kotlin-stdlib:1.8.10) and jetified-kotlin-stdlib-jdk8-1.6.21 (org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.6.21)

     Go to the documentation to learn how to <a href="d.android.com/r/tools/classpath-sync-errors">Fix dependency resolution errors</a>.

* Try:
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* Get more help at https://help.gradle.org

BUILD FAILED in 10s
Exception: Gradle task assembleDebug failed with exit code 1

Error that is fixed by changing:

ext.kotlin_version = '1.7.10'

to

ext.kotlin_version = '1.8.0'

Then I just followed the documentation to build an APK and ran:

flutter clean && flutter pub get && flutter build apk

Code sample

No need to touch any dart code.

Affected platforms

Android

Platform details

No response

AudioPlayers Version

5.0.0

Build mode

release

Audio Files/URLs/Sources

No response

Screenshots

No response

Logs

Full Logs

I already gave everything above.

Flutter doctor (which is a mess for unknown reasons):

[✓] Flutter (Channel stable, 3.10.5, on macOS 12.6 21G115 darwin-arm64, locale fr-FR)
  • Flutter version 3.10.5 on channel stable at /Users/thomasgysemans/Documents/SDKs/flutter
  • Upstream repository https://github.com/flutter/flutter.git
  • Framework revision 796c8ef792 (7 weeks ago), 2023-06-13 15:51:02 -0700
  • Engine revision 45f6e00911
  • Dart version 3.0.5
  • DevTools version 2.23.1

[✓] Android toolchain - develop for Android devices (Android SDK version 32.1.0-rc1)
  • Android SDK at /Users/thomasgysemans/Library/Android/sdk
  • Platform android-33, build-tools 32.1.0-rc1
  • Java binary at: /Users/thomasgysemans/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/223.8836.35.2231.10406996/Android Studio.app/Contents/jbr/Contents/Home/bin/java
  • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)
  • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.2)
  • Xcode at /Applications/Xcode_14.app/Contents/Developer
  • Build 14C18
  • CocoaPods version 1.11.3

[✓] Chrome - develop for the web
  • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2021.1)
  • Android Studio at /Applications/Android Studio.app/Contents
  • Flutter plugin can be installed from:
    🔨 https://plugins.jetbrains.com/plugin/9212-flutter
  • Dart plugin can be installed from:
    🔨 https://plugins.jetbrains.com/plugin/6351-dart
  • Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763)

[✓] Android Studio (version 2022.3)
  • Android Studio at /Users/thomasgysemans/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/223.8836.35.2231.10406996/Android Studio.app/Contents
  • Flutter plugin can be installed from:
    🔨 https://plugins.jetbrains.com/plugin/9212-flutter
  • Dart plugin can be installed from:
    🔨 https://plugins.jetbrains.com/plugin/6351-dart
  • Java version OpenJDK Runtime Environment (build 17.0.6+0-17.0.6b829.9-10027231)

[✓] Android Studio (version 2022.1)
  • Android Studio at /Users/thomasgysemans/Library/Application Support/JetBrains/Toolbox/apps/AndroidStudio/ch-0/221.6008.13.2211.9619390/Android Studio.app/Contents
  • Flutter plugin can be installed from:
    🔨 https://plugins.jetbrains.com/plugin/9212-flutter
  • Dart plugin can be installed from:
    🔨 https://plugins.jetbrains.com/plugin/6351-dart
  • Java version OpenJDK Runtime Environment (build 11.0.15+0-b2043.56-8887301)

[✓] IntelliJ IDEA Ultimate Edition (version 2022.3.1)
  • IntelliJ at /Applications/IntelliJ IDEA.app
  • Flutter plugin version 71.3.6
  • Dart plugin version 223.8214.16

[✓] IntelliJ IDEA Ultimate Edition (version 2023.1.2)
  • IntelliJ at /Users/thomasgysemans/Applications/JetBrains Toolbox/IntelliJ IDEA Ultimate.app
  • Flutter plugin version 74.0.4
  • Dart plugin version 231.9065

[✓] IntelliJ IDEA Ultimate Edition (version 2023.1.2)
  • IntelliJ at /Users/thomasgysemans/Library/Application Support/JetBrains/Toolbox/apps/IDEA-U/ch-0/231.9011.34/IntelliJ IDEA.app
  • Flutter plugin can be installed from:
    🔨 https://plugins.jetbrains.com/plugin/9212-flutter
  • Dart plugin can be installed from:
    🔨 https://plugins.jetbrains.com/plugin/6351-dart

[✓] IntelliJ IDEA Ultimate Edition (version 2023.1.1)
  • IntelliJ at /Users/thomasgysemans/Library/Application Support/JetBrains/Toolbox/apps/IDEA-U/ch-0/231.8770.65/IntelliJ IDEA.app
  • Flutter plugin can be installed from:
    🔨 https://plugins.jetbrains.com/plugin/9212-flutter
  • Dart plugin can be installed from:
    🔨 https://plugins.jetbrains.com/plugin/6351-dart

[✓] VS Code (version 1.80.2)
  • VS Code at /Applications/Visual Studio Code.app/Contents
  • Flutter extension version 3.68.0

[✓] Connected device (3 available)
  • M2101K6G (mobile) • ce7b7e4f • android-arm64  • Android 12 (API 31)
  • macOS (desktop)   • macos    • darwin-arm64   • macOS 12.6 21G115 darwin-arm64
  • Chrome (web)      • chrome   • web-javascript • Google Chrome 115.0.5790.114

[✓] Network resources
  • All expected network resources are available.

• No issues found!

Related issues / more information

No response

Working on PR

no way

[Gustl22]

Can you post your original build.gradle files plz?

[ThomasGysemans]

Here android/build.gradle:

buildscript {
    // I eventually had to change this to `1.8.0`
    // The first time because of this error during release build: https://docs.flutter.dev/release/breaking-changes/kotlin-version
    // The second time (on another project) because of the error shown above
    ext.kotlin_version = '1.7.10' 
    repositories {
        google()
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:7.3.0'
        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
}

Here android/app/build.gradle:

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

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw new GradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

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"

// This was added according to https://docs.flutter.dev/deployment/android
def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}

android {
    namespace "com.example.audioplayers_damn"
    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.example.audioplayers_damn"
        // 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 23 // As recommended
        targetSdkVersion flutter.targetSdkVersion
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

    // This was added according to https://docs.flutter.dev/deployment/android
    signingConfigs {
       release {
           keyAlias keystoreProperties['keyAlias']
           keyPassword keystoreProperties['keyPassword']
           storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
           storePassword keystoreProperties['storePassword']
       }
    }
    buildTypes {
        release {
            signingConfig signingConfigs.release
        }
    }
}

flutter {
    source '../..'
}

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

[mahyarmirrashed]

I have the same problem.

[Gustl22]

You're right, AGP 7 support has mistakenly dropped by bumping a gradle dependency, I added a PR to fix :)