我有一个小的 Flutter 应用程序和 AndroidStudio（Arctic Fox 2020.3.1 Patch 2）抱怨以下错误
在 android/app/build.gradle 中：
无法解析符号“GradleException”
flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 2.5.1, on macOS 11.6 20G165 darwin-x64, locale en-US)
[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
[✓] Xcode - develop for iOS and macOS
[✓] Chrome - develop for the web
[✓] Android Studio (version 2020.3)
[✓] IntelliJ IDEA Ultimate Edition (version 2021.2.2)
[✓] Connected device (3 available)
• No issues found!
我尝试了到目前为止在网上找到的建议，比如定义 SDK（已经定义，更改或删除它并再次设置它没有帮助）。
偶尔，我也得到
1.在android/app/build.gradle中：
无法解析符号“属性”
2.在android/settings.gradle中：
无法解析符号“文件”无法解析符号“属性”
编辑
这是 build.gradle 的内容。它或多或少是用flutter创建的
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: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
android {
compileSdkVersion 30
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
lintOptions {
abortOnError false
}
sourceSets {
main.java.srcDirs += 'src/main/kotlin'
}
defaultConfig {
// TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
applicationId "org.myorg.myapp"
minSdkVersion 21
targetSdkVersion 30
versionCode flutterVersionCode.toInteger()
versionName flutterVersionName
}
buildTypes {
release {
// TODO: Add your own signing config for the release build.
// Signing with the debug keys for now, so `flutter run --release` works.
signingConfig signingConfigs.debug
}
}
}
flutter {
source '../..'
}
dependencies {
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
// implementation 'com.google.android.gms:play-services-ads:20.4.0'
}
您的问题可以通过导入类
GradleException来解决。只需添加此代码import org.gradle.api.GradleException。如果问题仍然存在，您可能需要重新安装 Gradle。您可以通过以下方式执行此操作：-2.在gradle-wrapper.properties文件中，在distribution URL中，将版本改成最新支持的版本，我用的是7.1.1