Flutter迁移AndroidX后运行报错：ProcessException异常解决求助

我之前也踩过类似的坑，先帮你梳理问题和解决步骤：

你遇到的报错信息 #

• Error running Gradle: ProcessException: Process "E:\Flutter\myapp\android\gradlew.bat" exited abnormally:
  Command: E:\Flutter\myapp\android\gradlew.bat app:properties
  Finished with error: Please review your Gradle project setup in the android/ folder.

你的项目配置文件 #

gradle-wrapper.properties

#Mon Jul 29 22:33:03 ICT 2019
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip

android/build.gradle

buildscript {
    repositories {
        google()
        jcenter()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.4.2'
        classpath 'com.google.gms:google-services:4.3.0'
    }
}

allprojects {
    repositories {
        google()
        jcenter()
    }
}

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

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

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

android {
    compileSdkVersion 28

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.visionelectronics.smart_rolling_door"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode flutterVersionCode.toInteger()
        versionName flutterVer sionName
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    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 {
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'androidx.test:runner:1.1.0'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
}

apply plugin: 'com.google.gms.google-services'

具体解决步骤 #

1. 先修复低级拼写错误
   看你app/build.gradle的defaultConfig块里，versionName flutterVer sionName这里多了个空格，应该改成versionName flutterVersionName。这个小错误会直接导致Gradle解析失败，是最优先要解决的问题。

2. 补全AndroidX核心配置
   迁移AndroidX必须在android/gradle.properties文件里添加以下两行（如果还没加的话）：

   android.useAndroidX=true
   android.enableJetifier=true
   

   这两行是告诉Gradle启用AndroidX，并自动将第三方依赖迁移到AndroidX版本，缺一不可。

3. 清理缓存重新构建
   改完配置后，缓存可能残留旧数据，执行以下操作：

   • 删除项目根目录下的.gradle文件夹，以及android目录下的.gradle文件夹
   • 在终端运行flutter clean
   • 接着运行flutter pub get
   • 最后尝试重新运行项目

4. 版本兼容性检查（备选方案）
   你的Gradle 5.1.1和AGP 3.4.2版本是兼容的，但如果前面的步骤都没用，可以试试升级版本：

   • 把gradle-wrapper.properties里的distributionUrl改成https\://services.gradle.org/distributions/gradle-5.4.1-all.zip
   • 把android/build.gradle里的AGP版本改成classpath 'com.android.tools.build:gradle:3.5.3'
     升级后重复步骤3清理缓存再尝试运行。

按照这个流程走，应该能解决你遇到的Gradle错误。

内容的提问来源于stack exchange，提问作者NamCao