Flutter集成Firebase后构建报错：找不到GradleWorkerMain主类

在Flutter项目中集成firebase_core和firebase_auth后，构建时出现以下Gradle相关报错：

Error: Could not find or load main class worker.org.gradle.process.internal.worker.GradleWorkerMain
Caused by: java.lang.ClassNotFoundException: worker.org.gradle.process.internal.worker.GradleWorkerMain

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':gradle:compileGroovy'.
> Failed to run Gradle Worker Daemon
   > Process 'Gradle Worker Daemon 4' finished with non-zero exit value 1

已尝试的排查步骤：

• 多次执行rm -rf ~/.gradle/caches/清理Gradle缓存
• 执行./gradlew wrapper --gradle-version 8.3 --distribution-type all重建Gradle wrapper
• 将Java版本设置为17（符合Firebase和Android Gradle Plugin要求）
• 确保com.android.tools.build:gradle版本与Gradle 8.x兼容
• 删除.gradle和.idea文件夹清除IDE缓存
• 通过Android Studio及命令行./gradlew clean+./gradlew assembleDebug尝试构建

当前环境：Gradle 8.3 + Java 17，问题仍未解决，怀疑是Firebase安装触发了Gradle配置冲突。

项目配置文件 #

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
    }()

    includeBuild("$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 "8.1.0" apply false
    // START: FlutterFire Configuration
    id "com.google.gms.google-services" version "4.3.15" apply false
    // END: FlutterFire Configuration
    id "org.jetbrains.kotlin.android" version "1.8.22" apply false
}

include ":app"

build.gradle（app模块） #

plugins {
    id "com.android.application"
    // START: FlutterFire Configuration
    id 'com.google.gms.google-services'
    // END: FlutterFire Configuration
    id "kotlin-android"
    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
    id "dev.flutter.flutter-gradle-plugin"
}

android {
    namespace = "com.example.ticketmasterapp"
    compileSdk = flutter.compileSdkVersion
    ndkVersion = flutter.ndkVersion

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_11
        targetCompatibility JavaVersion.VERSION_11
    }

    kotlinOptions {
        jvmTarget = JavaVersion.VERSION_11
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId = "com.example.ticketmasterapp"
        // You can update the following values to match your application needs.
        // For more information, see: https://flutter.dev/to/review-gradle-config.
        minSdk = flutter.minSdkVersion
        targetSdk = flutter.targetSdkVersion
        versionCode = flutter.versionCode
        versionName = flutter.versionName
    }

    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 = "../.."
}

解决方法 #

1. 统一Java版本配置 #

你的全局Java版本是17，但build.gradle中指定的编译版本仍是Java11，这会导致Gradle Worker Daemon加载时的类路径冲突，这是核心问题之一。修改build.gradle中的配置：

compileOptions {
    sourceCompatibility JavaVersion.VERSION_17
    targetCompatibility JavaVersion.VERSION_17
}

kotlinOptions {
    jvmTarget = JavaVersion.VERSION_17
}

2. 升级Google Services插件版本 #

当前使用的com.google.gms.google-services:4.3.15与Gradle8.3兼容性有限，建议升级到兼容Gradle8.x的最新稳定版（如4.4.0），修改settings.gradle：

id "com.google.gms.google-services" version "4.4.0" apply false

3. 额外排查修复步骤 #

• 检查Gradle JDK配置：打开Android Studio的「项目结构」（File > Project Structure），确认Gradle JDK选择的是独立安装的Java17（避免使用Embedded JDK，可能存在文件损坏）
• 临时禁用Gradle守护进程：在项目根目录的gradle.properties中添加org.gradle.daemon=false，然后重新执行./gradlew clean assembleDebug
• 修复Gradle目录权限：Linux/macOS下执行sudo chown -R $USER:$USER ~/.gradle，确保当前用户拥有.gradle文件夹的完整权限
• 重新下载Gradle发行包：删除~/.gradle/wrapper/dists/gradle-8.3-all文件夹，让Gradle重新下载完整的发行包，避免文件缺失或损坏

内容的提问来源于stack exchange，提问作者IniOluwa Longe