flutter项目报错：Could not find method flutter() for arguments

已解决！： flutter项目报错：Could not find method flutter() for arguments

直接进入正题：
第一次使用AS创建flutter项目，运行在夜神模拟器里，但是今天不知道碰到了啥，就报错了
报错内容：

就是这个错误，找不到任何原因！

相关代码：
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"

flutter {
    source '../..'
}
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.example.flutter_app2"
        minSdkVersion 16
        targetSdkVersion 28
        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
        }
    }
}

adroid/build.gradle

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

        maven { url 'https://maven.aliyun.com/repository/jcenter' }

        maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
    }
}

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

        maven { url 'https://maven.aliyun.com/repository/jcenter' }

        maven { url 'http://maven.aliyun.com/nexus/content/groups/public' }
    }
}

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

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

参考了一下俩个博客，解释的原因和我一样，但是解决方法就不会啦

https://stackoverflow.com/questions/57948118/could-not-find-method-flutter-for-arguments-in-visual-studio-code

https://stackoverflow.com/questions/57947444/error-on-build-gradle-in-visual-studio-codeflutter

我把他们的回答粘出来

解决了，重新安装flutter sdk就行啦，真菜，就是本地的那个，我也不知道咋回事，重新装一遍再打开就可以用啦。唉，真鸡儿菜！
参考博客(里面有flutter sdk 的安装过程)：

https://www.cnblogs.com/yangyxd/p/8809512.html