为什么我得到这些错误我试图释放apk

我运行“flutter build apk--release”

• 出现问题：配置根项目android_intent时出现问题。

未找到SDK位置。使用local.properties文件中的sdk. dir或ANDROID_HOME环境变量定义位置。

android/app/build. g radle

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 28

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

    lintOptions {
        disable 'InvalidPackage'
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId "com.example.deleviry"

   minSdkVersion 21
        targetSdkVersion 28
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        multiDexEnabled true
    }

    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 'com.google.firebase:firebase-core:17.2.0'
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version" }

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

android/build. gradle

buildscript {
    ext.kotlin_version = '1.3.50'
    repositories {
        google()
        jcenter()
    }

    dependencies {
        classpath 'com.android.tools.build:gradle:3.5.0'
        classpath 'com.google.gms:google-services:4.3.3'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    } }

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 }