Getting this error when I use flutter run command

Question

Went to add firebase dependencies to my build.gradle Getting this error since I do a flutter run

   Launching lib\main.dart on KB2001 in debug mode...
    Running Gradle task 'assembleDebug'...
    D8: Cannot fit requested classes in a single dex file (# methods: 88379 > 65536)
    com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: 
    The number of method references in a .dex file cannot exceed 64K.
    Learn how to resolve this issue at https://developer.android.com/tools/building/multidex.html
        at com.android.builder.dexing.D8DexArchiveMerger.getExceptionToRethrow(D8DexArchiveMerger.java:132)
        at com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:119)
        at com.android.build.gradle.internal.transforms.DexMergerTransformCallable.call(DexMergerTransformCallable.java:102)
        at com.android.build.gradle.internal.tasks.DexMergingTaskRunnable.run(DexMergingTask.kt:432)
        at com.android.build.gradle.internal.tasks.Workers$ActionFacade.run(Workers.kt:242)
        at org.gradle.workers.internal.AdapterWorkAction.execute(AdapterWorkAction.java:57)
        at org.gradle.workers.internal.DefaultWorkerServer.execute(DefaultWorkerServer.java:63)
        at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.create(NoIsolationWorkerFactory.java:67)
        at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.create(NoIsolationWorkerFactory.java:63)
        at org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader(ClassLoaderUtils.java:97)
        at org.gradle.workers.internal.NoIsolationWorkerFactory$1.lambda$execute$0(NoIsolationWorkerFactory.java:63)
        at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:44)
        at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:41)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:200)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$CallableBuildOperationWorker.execute(DefaultBuildOperationRunner.java:195)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$3.execute(DefaultBuildOperationRunner.java:75)
        at org.gradle.internal.operations.DefaultBuildOperationRunner$3.execute(DefaultBuildOperationRunner.java:68)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:153)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.execute(DefaultBuildOperationRunner.java:68)
        at org.gradle.internal.operations.DefaultBuildOperationRunner.call(DefaultBuildOperationRunner.java:62)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.lambda$call$2(DefaultBuildOperationExecutor.java:76)
        at org.gradle.internal.operations.UnmanagedBuildOperationWrapper.callWithUnmanagedSupport(UnmanagedBuildOperationWrapper.java:54)
        at org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:76)
        at org.gradle.workers.internal.AbstractWorker.executeWrappedInBuildOperation(AbstractWorker.java:41)
        at org.gradle.workers.internal.NoIsolationWorkerFactory$1.execute(NoIsolationWorkerFactory.java:60)
        at org.gradle.workers.internal.DefaultWorkerExecutor.lambda$submitWork$2(DefaultWorkerExecutor.java:200)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runExecution(DefaultConditionalExecutionQueue.java:215)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.runBatch(DefaultConditionalExecutionQueue.java:164)
        at org.gradle.internal.work.DefaultConditionalExecutionQueue$ExecutionRunner.run(DefaultConditionalExecutionQueue.java:131)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
        at org.gradle.internal.concurrent.ManagedExecutorImpl$1.run(ManagedExecutorImpl.java:48)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
        at java.lang.Thread.run(Thread.java:748)
    Caused by: com.android.tools.r8.CompilationFailedException: Compilation failed to complete, position: null
        at Version.fakeStackEntry(Version_2.1.62.java:0)
        at com.android.tools.r8.utils.Y.a(SourceFile:78)
        at com.android.tools.r8.D8.run(D8.java:11)
        at com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:117)
        ... 36 more
    Caused by: com.android.tools.r8.utils.b: Cannot fit requested classes in a single dex file (# methods: 88379 > 65536)
        at com.android.tools.r8.utils.T0.error(SourceFile:1)
        at com.android.tools.r8.utils.T0.a(SourceFile:2)
        at com.android.tools.r8.dex.P.a(SourceFile:740)
        at com.android.tools.r8.dex.P$h.a(SourceFile:7)
        at com.android.tools.r8.dex.b.a(SourceFile:14)
        at com.android.tools.r8.dex.b.b(SourceFile:25)
        at com.android.tools.r8.D8.d(D8.java:133)
        at com.android.tools.r8.D8.b(D8.java:1)
        at com.android.tools.r8.utils.Y.a(SourceFile:36)
        ... 38 more
    
    
    FAILURE: Build failed with an exception.
    
    * What went wrong:
    Execution failed for task ':app:mergeDexDebug'.
    > A failure occurred while executing com.android.build.gradle.internal.tasks.Workers$ActionFacade
       > com.android.builder.dexing.DexArchiveMergerException: Error while merging dex archives: 
         The number of method references in a .dex file cannot exceed 64K.
         Learn how to resolve this issue at https://developer.android.com/tools/building/multidex.html
    
    * 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 10s
    [!] The shrinker may have failed to optimize the Java bytecode.
        To disable the shrinker, pass the `--no-shrink` flag to this command.
        To learn more, see: https://developer.android.com/studio/build/shrink-code
    Exception: Gradle task assembleDebug failed with exit code 1

Any idea how to solve this?

Omar Mahmoud · Accepted Answer · 2021-09-02 06:39:11Z

Versions of the platform prior to Android 5.0 (API level 21) use the Dalvik runtime for executing app code. By default, Dalvik limits apps to a single classes.dex

Modify the app-level build.gradle file to enable multidex and add the multidex library as a dependency, as shown here:

android {
    defaultConfig {
        ...
        minSdkVersion 15 
        targetSdkVersion 28
        multiDexEnabled true
    }
    ...
}

dependencies {
    implementation "androidx.multidex:multidex:2.0.1"
}

create App class

 import io.flutter.app.FlutterApplication
    import android.content.Context
    import androidx.multidex.MultiDex
    
    class App : FlutterApplication() {
    
        override fun attachBaseContext(base: Context) {
            super.attachBaseContext(base)
            MultiDex.install(this)
        }
    
    }

edit your manifest file to set android:name in the tag as follows:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.myapp">
    <application
            android:name=".App" >
        ...
    </application>
</manifest>

**Note Or You can set the minSdkVersion 21 to avoid this error

refer to the documentation for more info

Huthaifa Muayyad · Accepted Answer · 2021-09-01 22:00:18Z

1

Set your minimum sdk version to 21.

answered Sep 1, 2021 at 22:00

Huthaifa Muayyad

12.4k4 gold badges22 silver badges54 bronze badges

Comments

ahmad abdurraheem · Accepted Answer · 2021-09-02 11:24:06Z

0

This means that your app has reached the maximum limit of methods set by android on a single dex file. One way to solve this is to enable multi-dex feature. Follow this link, it provides the best explanation on your issue and how to solve it. https://developer.android.com/studio/build/multidex

answered Sep 2, 2021 at 11:24

ahmad abdurraheem

233 bronze badges

1 Comment

Community Over a year ago

Please add further details to expand on your answer, such as working code or documentation citations.

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