com.android.tools.build:gradle is no set in the build.gradle

[sswedan]

Description
I've created a new empty Flutter app with version (3.24.5) and I'm trying to add the "com.huawei.agconnect:agcp" plugin to use Huawei Messaging. When I try to run/build for android I get the following error:

An exception occurred applying plugin request [id: 'com.huawei.agconnect']
> Failed to apply plugin 'com.huawei.agconnect'.
   > com.android.tools.build:gradle is no set in the build.gradle file

I've tried changing the Gradle Version and Kotlin version but all attempts have resulted in the same error.

Here is the Sample Flutter app to test and replicate the issue:
https://github.com/sswedan/Empty_Flutter

Expected behavior
I expect the project to build without errors

Current behavior

An exception occurred applying plugin request [id: 'com.huawei.agconnect']
> Failed to apply plugin 'com.huawei.agconnect'.
   > com.android.tools.build:gradle is no set in the build.gradle file

Screenshots

Logs
flutter build apk

[id: 'dev.flutter.flutter-plugin-loader', version: '1.0.0']
[id: 'com.android.application', version: '8.7.2', apply: false]
[id: 'org.jetbrains.kotlin.android', version: '1.7.10', apply: false]

com.huawei.agconnect.agcp
[id: 'com.huawei.agconnect.agcp', version: '1.9.1.300', artifact: 'com.huawei.agconnect:agcp:1.9.1.300', apply: false]
[id: 'com.android.application']
[id: 'kotlin-android']
[id: 'dev.flutter.flutter-gradle-plugin']
[id: 'com.huawei.agconnect']

FAILURE: Build failed with an exception.

• Where:
  Build file 'empty_flutter\android\app\build.gradle' line: 7

• What went wrong:
  An exception occurred applying plugin request [id: 'com.huawei.agconnect']

Failed to apply plugin 'com.huawei.agconnect'.
com.android.tools.build:gradle is no set in the build.gradle file

Environment

• Platform: Flutter
• Kit: Push
• Kit Version 1.9.1.300
• OS Version: Android 14
• Android Studio version: 2022.2.1
• Platform version: 3.24.5

[KonstantenKomkov]

Huawei plugins don't seem to work with the new gradle connection scheme. I haven't found a working example either.

[KonstantenKomkov]

I found a working way.

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:1.9.1.304")
            }
        }
    }
}

plugins {
    id "dev.flutter.flutter-plugin-loader" version "1.0.0"
    id "com.android.application" version "8.1.0" apply false
    id "com.google.gms.google-services" version "4.4.2" apply false
    id "org.jetbrains.kotlin.android" version "1.9.24" apply false
    id "com.huawei.agconnect" version "1.9.1.304" apply false
}

include ":app"

android/build.gradle

buildscript {
    repositories {
        mavenCentral()
        google()
        maven { url "https://developer.huawei.com/repo/" }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:8.1.0'
        classpath 'com.huawei.agconnect:agcp:1.9.1.304'
    }
}

allprojects {
    repositories {
        google()
        mavenCentral()
        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
}

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.huawei.agconnect"
}

def keystorePropertiesFile = rootProject.file("keystore.properties")
def keystoreProperties = new Properties()
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))

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 {
    namespace = "com.foodriver.game"
    compileSdk = flutter.compileSdkVersion
    ndkVersion = flutter.ndkVersion

    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_17
        targetCompatibility = JavaVersion.VERSION_17
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        targetSdkVersion 34
        applicationId = "com.foodriver.game"
        // 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.
        minSdk = flutter.minSdkVersion
        targetSdk = flutter.targetSdkVersion
        versionCode = flutterVersionCode.toInteger()
        versionName = flutterVersionName
    }

    signingConfigs {
        release {
            keyAlias keystoreProperties['keyAlias']
            keyPassword keystoreProperties['keyPassword']
            storeFile keystoreProperties['storeFile'] ? file(keystoreProperties['storeFile']) : null
            storePassword keystoreProperties['storePassword']
        }
    }

    buildTypes {
        release {
            signingConfig = signingConfigs.release
        }
    }

    flavorDimensions "default"
    productFlavors {
        dev {
            dimension "default"
            resValue "string", "food_driver_dev", "dev flavor"
            applicationIdSuffix ".prod"
        }
        prod {
            dimension "default"
            resValue "string", "food_driver", "prod flavor"
            applicationIdSuffix ".prod"
        }
        prodForSite {
            dimension "default"
            resValue "string", "food_driver", "prodForSite flavor"
            applicationIdSuffix ".prod"
        }
        google {
            dimension "default"
            resValue "string", "food_driver", "google flavor"
            applicationIdSuffix ".prod"
        }
        huawei {
            dimension "default"
            resValue "string", "food_driver", "huawei flavor"
            applicationIdSuffix ".prod"
        }
    }
}

flutter {
    source = "../.."
}

[justforworkandstuff]

I nearly decided to revert back the migration of Flutter Gradle Plugin DSL to its legacy format, until i found this solution.

A very grateful appreciation to @KonstantenKomkov!

I can confirm that the solution works.

[sswedan]

@KonstantenKomkov Thank you very much for your solution. I hope Huawei take this issue seriously and upgrade their plugins