Интеграция Firebase с Flutter Android не работает

Question

Я пытался реализовать все необходимые вещи для Android, но, хотя приложение работает на iOS, оно не работает на Android. Может кто-нибудь, пожалуйста, скажите мне, что идет не так и как решить эту проблему.

  Plugin project :firebase_core_web not found. Please update settings.gradle.
Plugin project :google_sign_in_web not found. Please update settings.gradle.

FAILURE: Build failed with an exception.                                

* What went wrong:                                                      
Could not determine the dependencies of task ':app:compileDebugJavaWithJavac'.
> Could not resolve all task dependencies for configuration ':app:debugCompileClasspath'.
   > Could not find firebase-core:16.0.9:.                              
     Required by:                                                       
         project :app                                                   

* 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 1s                                                      
Running Gradle task 'assembleDebug'...                                  
Running Gradle task 'assembleDebug'... Done                         2.2s
Exception: Gradle task assembleDebug failed with exit code 1

Я добавил все необходимые зависимости в pubspe c .yaml, так как это приложение уже работает на iOS, и я просто хочу иметь Android пользователей. Мой файл pubspe c .yaml:

 name: example
description: A new Flutter project.


version: 1.0.0+1

environment:
  sdk: ">=2.1.0 <3.0.0"

dependencies:


  flutter:
    sdk: flutter


  cupertino_icons: ^0.1.2
  firebase_core: ^0.4.0+9
  firebase_analytics: ^5.0.2
  firebase_auth: ^0.14.0+5
  cloud_firestore: ^0.12.9+5
  rflutter_alert: ^1.0.3
  modal_progress_hud: ^0.1.3
  flutter_auth_buttons: ^0.8.0
  google_sign_in: ^4.4.1


dev_dependencies:
  flutter_test:
    sdk: flutter






  uses-material-design: true

  # To add assets to your application, add an assets section, like this:
  # assets:
  #  - images/a_dot_burr.jpeg
  #  - images/a_dot_ham.jpeg

  # An image asset can refer to one or more resolution-specific "variants", see
  # https://flutter.dev/assets-and-images/#resolution-aware.

  # For details regarding adding assets from package dependencies, see
  # https://flutter.dev/assets-and-images/#from-packages

Это мой build.gradle в каталоге android:

buildscript {
    ext.kotlin_version = '1.3.50'
    repositories {
         google()  // Google's Maven repository
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        classpath 'com.google.gms:google-services:4.3.3'  // Google Services plugin
    }
}

allprojects {
    repositories {
        google()  // Google's Maven repository
        jcenter()
    }
}

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

task clean(type: Delete) {
    delete rootProject.buildDir
}

Это новое сообщение об ошибке:

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugGoogleServices'.
> No matching client found for package name 'com.example.list'

* 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 1s
26 actionable tasks: 24 executed, 2 up-to-date

новое сообщение об ошибке после редактирования settings.gradle:

Launching lib/main.dart on AOSP on IA Emulator in debug mode...
Running Gradle task 'assembleDebug'...
D8: Cannot fit requested classes in a single dex file (# methods: 87571 > 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:445)
    at com.android.build.gradle.internal.tasks.Workers$ActionFacade.run(Workers.kt:348)
    at org.gradle.workers.internal.AdapterWorkAction.execute(AdapterWorkAction.java:50)
    at org.gradle.workers.internal.DefaultWorkerServer.execute(DefaultWorkerServer.java:47)
    at 

org.gradle.workers.internal.NoIsolationWorkerFactory$1$1$1.create(NoIsolationWorkerFactory.java:65)
    at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1$1.create(NoIsolationWorkerFactory.java:61)
    at org.gradle.internal.classloader.ClassLoaderUtils.executeInClassloader(ClassLoaderUtils.java:98)
    at org.gradle.workers.internal.NoIsolationWorkerFactory$1$1.execute(NoIsolationWorkerFactory.java:61)
    at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:44)
    at org.gradle.workers.internal.AbstractWorker$1.call(AbstractWorker.java:41)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:416)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$CallableBuildOperationWorker.execute(DefaultBuildOperationExecutor.java:406)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor$1.execute(DefaultBuildOperationExecutor.java:165)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:250)
    at org.gradle.internal.operations.DefaultBuildOperationExecutor.execute(DefaultBuildOperationExecutor.java:158)
    at 

org.gradle.internal.operations.DefaultBuildOperationExecutor.call(DefaultBuildOperationExecutor.java:102)
    at org.gradle.internal.operations.DelegatingBuildOperationExecutor.call(DelegatingBuildOperationExecutor.java:36)
    at org.gradle.workers.internal.AbstractWorker.executeWrappedInBuildOperation(AbstractWorker.java:41)
    at org.gradle.workers.internal.NoIsolationWorkerFactory$1.execute(NoIsolationWorkerFactory.java:56)
    at org.gradle.workers.internal.DefaultWorkerExecutor$3.call(DefaultWorkerExecutor.java:215)
    at org.gradle.workers.internal.DefaultWorkerExecutor$3.call(DefaultWorkerExecutor.java:210)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at org.gradle.internal.work.DefaultConditionalExecutionQueue$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
    at com.android.tools.r8.utils.O.a(:65)
    at com.android.tools.r8.D8.run(:11)
    at 

com.android.builder.dexing.D8DexArchiveMerger.mergeDexArchives(D8DexArchiveMerger.java:117)
    ... 34 more
Caused by: com.android.tools.r8.utils.b: Error: null, Cannot fit requested classes in a single dex file (# methods: 87571 > 65536)
    at com.android.tools.r8.utils.y0.a(:21)
    at com.android.tools.r8.dex.K.a(:56)
    at com.android.tools.r8.dex.K$h.a(:5)
    at com.android.tools.r8.dex.b.b(:15)
    at com.android.tools.r8.dex.b.a(:38)
    at com.android.tools.r8.D8.d(:87)
    at com.android.tools.r8.D8.b(:1)
    at com.android.tools.r8.utils.O.a(:30)
    ... 36 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 7s
[!] 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

Answer 1

вы поддерживаете мультидекс для вашего приложения. Измените app / build.gradle, добавьте две строки кода, и вы - золотой.

 defaultConfig {
            // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
            applicationId "com.example.app"
            minSdkVersion 16
            targetSdkVersion 29
            versionCode flutterVersionCode.toInteger()
            versionName flutterVersionName
    //add this to resolve dex error
            multiDexEnabled true
        }

        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
            }
        }
    }

    flutter {
        source '../..'
    }

    dependencies {
    //add this to resolve dex error
        implementation 'androidx.multidex:multidex:2.0.1'
        implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"


    }

Answer 2

Измените настройки. Установите на это:

include ':app'

def flutterProjectRoot = rootProject.projectDir.parentFile.toPath()

def plugins = new Properties()
def pluginsFile = new File(flutterProjectRoot.toFile(), '.flutter-plugins')
if (pluginsFile.exists()) {
    pluginsFile.withReader('UTF-8') { reader -> plugins.load(reader) }
}

plugins.each { name, path ->
    def pluginDirectory = flutterProjectRoot.resolve(path).resolve('android').toFile()
    include ":$name"
    project(":$name").projectDir = pluginDirectory
}

Answer 3

Do flutter pub cache repair, чтобы исправить проблемы с вашими пакетами / плагинами флаттера в каталоге кэша (который может когда-нибудь повторно загрузить каждый пакет в кэше).

Очистка каталога ~/.pub-cache также будет работать. В моей системе этот каталог расположен по адресу C:\Users\BLiyanage\AppData\Roaming\Pub\Cache\hosted (Это местоположение может отличаться для вас).

Для IOS .pub-cache существует по адресу: Users/someuser/.pub-cache/hosted/pub.dartlang.org

Подробнее здесь для устранения подобных проблем. И аналогичный тикер вопроса .