Flutter迁移Gradle Plugin DSL后报错：com.android.tools.build:gradle未设置

错误信息 #

• Where:
  Build file 'flutter/android/build.gradle' line: 17

• What went wrong:
  A problem occurred evaluating root project 'android'.

A problem occurred configuring project ':app'.
Failed to notify project evaluation listener.
com.android.tools.build:gradle is not set in the build.gradle file
com.android.tools.build:gradle is not set in the build.gradle file

项目配置详情 #

app/build.gradle #

plugins {
    id "com.android.application"
    id "kotlin-android"
    id "dev.flutter.flutter-gradle-plugin"
    id "com.google.gms.google-services"
    id "com.google.firebase.crashlytics"
    id "com.huawei.agconnect"
}

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'
}

android {
    signingConfigs {
        debug {
            storeFile file(System.properties['user.home'] + '/.android/debug.keystore')
            storePassword 'android'
            keyAlias 'androiddebugkey'
            keyPassword 'android'
        }
    }

    compileSdkVersion 34

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }
    defaultConfig {
        applicationId "xx.xxxx.xxx"
        minSdkVersion 24
        targetSdkVersion 34
        multiDexEnabled true
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName

        signingConfig signingConfigs.'release-signing'
        resConfigs "en", "zh-rCN", "ar"
    }
    flavorDimensions "default"

    productFlavors {
        huawei {
            dimension "default"
            applicationIdSuffix ""
            manifestPlaceholders = [appName: "Alriyada"]
        }
    }

    buildTypes {
        debug {
            signingConfig signingConfigs.debug
        }
        release {
            signingConfig signingConfigs.'release-signing'
            aaptOptions {
                minifyEnabled true
                shrinkResources true
                ignoreAssetsPattern '!mlkit_pose:!mlkit_label_default_model:'
                proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
            }
        }
    }
    packagingOptions {
        exclude 'lib/**/libtranslate_jni.so'
        exclude 'lib/**/libdigitalink.so'
        exclude 'lib/**/libxeno_native.so'
        exclude 'lib/**/libmlkitcommonpipeline.so'
        exclude 'lib/**/libbarhopper_v2.so'
        exclude 'lib/**/libclassifier_jni.so'
        exclude 'lib/**/libface_detector_v2_jni.so'
        exclude 'lib/**/libtensorflowlite_jni.so'
        exclude 'lib/**/liblanguage_id_jni.so'
    }
}

flutter {
    source '../..'
}

dependencies {
    implementation 'io.github.pilgr:paperdb:2.7.2'
    implementation "androidx.multidex:multidex:2.0.1"
    implementation "com.google.firebase:firebase-iid:21.1.0"
    huaweiImplementation 'com.huawei.agconnect:agconnect-core:1.9.0.300'
    huaweiImplementation 'com.huawei.hms:push:6.11.0.300'
    huaweiImplementation 'com.huawei.hms:hmscoreinstaller:6.7.0.300'
}

googleServices.disableVersionCheck = true

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()
        maven {
            url 'https://developer.huawei.com/repo/'
        }
        gradlePluginPortal()
    }
    resolutionStrategy {
        eachPlugin {
            if (requested.id.id == "com.huawei.agconnect") {
                useModule("com.huawei.agconnect:agcp:1.9.0.300")
            }
        }
    }
}

plugins {
    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
    id "com.android.application" version "7.4.2" apply false
    id "org.jetbrains.kotlin.android" version "1.9.0" apply false
    id "com.google.gms.google-services" version "4.4.2" apply false
    id 'com.google.firebase.crashlytics' version '2.9.0' apply false
    id 'com.huawei.agconnect' version '1.9.0' apply false
}

include ':app'

build.gradle（根目录） #

allprojects {
    repositories {
        google()
        mavenCentral()
        maven { url "https://jitpack.io" }
        maven {url 'https://developer.huawei.com/repo/'}
    }
}

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

tasks.register("clean", Delete) {
    delete rootProject.buildDir
}

环境信息 #

• Flutter版本：3.16.0
• Gradle版本：7.4.2
• Kotlin版本：1.9.0
• Android Gradle Plugin版本：7.4.2

解决方案 #

1. 调整Flutter Gradle插件的引用方式 #

在settings.gradle的pluginManagement块中，移除includeBuild("$flutterSdkPath/packages/flutter_tools/gradle")，改为通过仓库引入并指定插件映射：

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
    }()

    repositories {
        google()
        mavenCentral()
        maven { url 'https://developer.huawei.com/repo/' }
        gradlePluginPortal()
        maven { url "$flutterSdkPath/packages/flutter_tools/gradle" }
    }
    resolutionStrategy {
        eachPlugin {
            if (requested.id.id == "dev.flutter.flutter-gradle-plugin") {
                useModule("dev.flutter:flutter-gradle-plugin:1.0.0")
            }
            if (requested.id.id == "com.huawei.agconnect") {
                useModule("com.huawei.agconnect:agcp:1.9.0.300")
            }
        }
    }
}

同时在settings.gradle的plugins块中添加Flutter Gradle插件的版本声明：

plugins {
    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
    id "dev.flutter.flutter-gradle-plugin" version "1.0.0" apply false
    id "com.android.application" version "7.4.2" apply false
    id "org.jetbrains.kotlin.android" version "1.9.0" apply false
    id "com.google.gms.google-services" version "4.4.2" apply false
    id 'com.google.firebase.crashlytics' version '2.9.0' apply false
    id 'com.huawei.agconnect' version '1.9.0' apply false
}

2. 校验版本兼容性 #

AGP 7.4.2对应Gradle 7.5版本，建议将gradle/wrapper/gradle-wrapper.properties中的Gradle版本更新为7.5：

distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip

3. 修复语法错误 #

app/build.gradle中读取local.properties的代码存在语法错误，将reader -改为reader ->，确保配置正常加载。

4. 清理缓存并重新同步 #

• 删除项目根目录及android目录下的.gradle、build文件夹
• 执行终端命令：flutter clean && flutter pub get && cd android && ./gradlew clean && ./gradlew assembleDebug
• 或在Android Studio中点击File -> Sync Project with Gradle Files

内容的提问来源于stack exchange，提问作者Mohanned Binmiskeen