Android项目build.gradle报错：设置applicationId时机过晚求助

问题详情 #

配置Android项目时出现报错，抛出com.android.build.gradle.internal.dsl.AgpDslLockedException异常，提示信息：

It is too late to set applicationId

原因是设置applicationId的时机过晚，该参数已被读取用于项目配置。

用户提供的app/build.gradle代码如下：

def localProperties =  new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw newGradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}


apply plugin: 'com.android.application'
// START: FlutterFire Configuration
apply plugin: 'com.google.gms.google-services'
// END: FlutterFire Configuration
apply plugin: 'kotlin-android'

apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    namespace "com.example.moto_park"
    compileSdkVersion 33
    ndkVersion flutter.ndkVersion
    buildFeatures {
        viewBinding true
    }
    defaultConfig {
        multiDexEnabled true
    }
    compileOptions {
        coreLibraryDesugaringEnabled true
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    kotlinOptions {
        jvmTarget = '1.8'
    }

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    configurations.all {
        resolutionStrategy {
            force 'androidx.core:core-ktx:1.10.0'
        }
        defaultConfig {
            // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
            applicationId "com.example.moto_park"
            // 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.
            minSdkVersion 21
            targetSdkVersion 33
            versionCode flutterVersionCode.toInteger()
            versionName flutterVersionName
            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 {
        implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
        coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.1.2'
        implementation 'com.google.firebase:firebase-analytics'
    }
}

解决方案 #

问题核心是错误地将defaultConfig和buildTypes嵌套在了configurations.all块内部。configurations.all是用于配置依赖解析策略的代码块，此时Android Gradle插件已经完成了项目基础配置的初始化，再在这里设置applicationId会触发时机过晚的报错。

修正步骤：

• 将configurations.all里的defaultConfig块移到android块的直接子层级，和compileSdkVersion、compileOptions等同级，合并原有重复的multiDexEnabled配置。
• 移除configurations.all内部的buildTypes块，将其移到android块的直接子层级。
• 保留configurations.all里的resolutionStrategy配置，其他内容调整到正确层级。

修正后的代码如下：

def localProperties =  new Properties()
def localPropertiesFile = rootProject.file('local.properties')
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader('UTF-8') { reader ->
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty('flutter.sdk')
if (flutterRoot == null) {
    throw newGradleException("Flutter SDK not found. Define location with flutter.sdk in the local.properties file.")
}

def flutterVersionCode = localProperties.getProperty('flutter.versionCode')
if (flutterVersionCode == null) {
    flutterVersionCode = '1'
}

def flutterVersionName = localProperties.getProperty('flutter.versionName')
if (flutterVersionName == null) {
    flutterVersionName = '1.0'
}


apply plugin: 'com.android.application'
// START: FlutterFire Configuration
apply plugin: 'com.google.gms.google-services'
// END: FlutterFire Configuration
apply plugin: 'kotlin-android'

apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    namespace "com.example.moto_park"
    compileSdkVersion 33
    ndkVersion flutter.ndkVersion
    buildFeatures {
        viewBinding true
    }
    // 正确层级的defaultConfig，合并所有配置项
    defaultConfig {
        applicationId "com.example.moto_park"
        minSdkVersion 21
        targetSdkVersion 33
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        multiDexEnabled true
    }
    compileOptions {
        coreLibraryDesugaringEnabled true
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    kotlinOptions {
        jvmTarget = '1.8'
    }

    sourceSets {
        main.java.srcDirs += 'src/main/kotlin'
    }

    configurations.all {
        resolutionStrategy {
            force 'androidx.core:core-ktx:1.10.0'
        }
    }

    // 正确层级的buildTypes
    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 {
        implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
        coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:2.1.2'
        implementation 'com.google.firebase:firebase-analytics'
    }
}

内容的提问来源于stack exchange，提问作者Devesh Tiwari