颤振当我试着运行这个“flutter build appbundle”时，我得到了这个错误

Question

我正在尝试使用flutter构建一个应用程序。当我尝试运行此推荐“flutter build appbundle”时，我收到以下错误：

失败：构建失败，但有例外。

>

其中：构建文件'F：\azabaza_app\myapp\android\app\build.gradle'行：28

错误：评估项目“app”时出现问题。

无法为FlutterExtension类型的扩展“flutter”获取未知属性“compileSdkVersion”。

>

获取更多帮助https://help.gradle.org

在828ms内运行Gradle任务“bundleRelease”时生成失败
1536ms梯度任务bundleRelease失败，退出代码为1

我的android/app/build.gradle文件：

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"
def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file('key.properties')
if (keystorePropertiesFile.exists()) {
    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}
android {
    compileSdkVersion flutter.compileSdkVersion
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
    defaultConfig {
        applicationId "io.flutter.examples.flutter_view"
        minSdkVersion flutter.minSdkVersion
        targetSdkVersion 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
       }
   }

}
flutter {
    source '../..'
}
dependencies {
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'com.google.android.material:material:1.0.0'
}

Answer 1

您当前正在将android编译版本设置为不存在的变量。编译SDK版本。编译版本通常是硬编码的数字，例如：compileSdkVersion 30

Answer 2

从你的android/app/build。gradle文件中，您需要更改构建中的3个变量。将文件渐变为整数：compileSdkVersion，现在设置为flutter。compileSdkVersion，minSdkVersion现在设置为flutter。MinSDK版本和目标SDK版本现在设置为颤振。targetSdkVersion。它们需要被最新的稳定版本所取代。

android {

    compileSdkVersion 31

    compileOptions {
       ...
    }

   ... ...

    defaultConfig {
        ...
        minSdkVersion 28
        targetSdkVersion 30
       ...
    }
}

编译SdkVersion

进行更改后，运行flutter clean以删除上一个版本。然后再次重建flutter build appbundle-v或flutter build appbundle以反映您的新更改。