Flutter项目真机编译失败：找不到gradle:7.3.0依赖

错误详情 #

FAILURE: Build failed with an exception.
* Where:
Build file 'C:\Users\PcMax\development\projects\shop_appre\android\app\build.gradle' line: 26

* What went wrong:
A problem occurred evaluating project ':app'.
> Could not resolve all files for configuration 'classpath'.
   > Could not find com.android.tools.build:gradle:7.3.0.
     Searched in the following locations:
       - https://dl.google.com/dl/android/maven2/com/android/tools/build/gradle/7.3.0/gradle-7.3.0.pom
       - https://repo.maven.apache.org/maven2/com/android/tools/build/gradle/7.3.0/gradle-7.3.0.pom
     Required by:
         unspecified:unspecified:unspecified

项目配置文件 #

android/app/build.gradle #

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 new GradleException("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'
apply plugin: 'kotlin-android'
apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"

android {
    compileSdkVersion flutter.compileSdkVersion
    ndkVersion flutter.ndkVersion

    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }

    kotlinOptions {
        jvmTarget = '1.8'
    }

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

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.example.shop_app"
        // You can update the following values to match your application needs.
        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-build-configuration.
        minSdkVersion flutter.minSdkVersion
        targetSdkVersion flutter.targetSdkVersion
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

    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"
}

android/build.gradle #

buildscript {
    ext.kotlin_version = '1.6.10'
    repositories {
        google()
        mavenCentral()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:7.1.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

allprojects {
    repositories {
        google()
        mavenCentral()
    }
}

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

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

解决方案 #

1. 同步Android Gradle Plugin版本 #

错误提示找不到7.3.0版本的AGP，但你的android/build.gradle里配置的是7.1.2。这是因为你使用的最新版Flutter SDK，其内置的flutter.gradle脚本依赖了更高版本的AGP。

修改android/build.gradle中的AGP版本为7.3.0：

dependencies {
    classpath 'com.android.tools.build:gradle:7.3.0' // 替换原来的7.1.2
    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
}

2. 匹配Gradle Wrapper版本 #

AGP 7.3.0需要搭配Gradle 7.4及以上版本使用，因此需要修改gradle/wrapper/gradle-wrapper.properties中的distributionUrl：

distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip

3. 清理并重新构建 #

执行以下命令清理缓存并重新构建：

flutter clean
flutter pub get
flutter run

补充说明 #

如果修改后仍无法下载，检查网络是否能访问Google Maven仓库，或者可以尝试在buildscript和allprojects的repositories中添加国内镜像作为备选：

repositories {
    google()
    mavenCentral()
    maven { url 'https://maven.aliyun.com/repository/google' }
    maven { url 'https://maven.aliyun.com/repository/public' }
}

内容的提问来源于stack exchange，提问作者Anas Fayad