인프런 커뮤니티 질문&답변

강사님 안녕하세요\

다름이 아니라 flutter_secure_storage를 추가하고 빌드파일에서 minSdkVersion 부분에 18을 추가하고 재시작을 하니 오류가 생겼습니다.

그래서 minSdkVersion에 18을 지우고 재시작을 하니 정상동작하였습니다. 18을 작성하니 오류가 뜨는 이유가 무엇인가요?

Launching lib\main.dart on SM S918N in debug mode...

FAILURE: Build failed with an exception.

* Where:

Build file 'C:\Users\DongHan\AndroidStudioProjects\project\delivery_front\android\app\build.gradle' line: 41

* What went wrong:

A problem occurred evaluating project ':app'.

> Could not find method minSdkVersion() for arguments [18] on extension 'flutter' of type FlutterExtension.

* Try:

> Run with --stacktrace option to get the stack trace.

> Run with --info or --debug option to get more log output.

> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 2s

Running Gradle task 'assembleDebug'... 3.7s

Error: Gradle task assembleDebug failed with exit code 1

minSdkVersion을 18로 설정하고 재실행 했을떄의 오류 로그입니다

plugins {
    id "com.android.application"
    id "kotlin-android"
    // The Flutter Gradle Plugin must be applied after the Android and Kotlin Gradle plugins.
    id "dev.flutter.flutter-gradle-plugin"
}

def localProperties = new Properties()
def localPropertiesFile = rootProject.file("local.properties")
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader("UTF-8") { reader ->
        localProperties.load(reader)
    }
}

def flutterVersionCode = localProperties.getProperty("flutter.versionCode")
if (flutterVersionCode == null) {
    flutterVersionCode = "1"
}

def flutterVersionName = localProperties.getProperty("flutter.versionName")
if (flutterVersionName == null) {
    flutterVersionName = "1.0"
}

android {
    namespace = "com.example.delivery"
    compileSdk = flutter.compileSdkVersion
    ndkVersion = flutter.ndkVersion

    compileOptions {
        sourceCompatibility = JavaVersion.VERSION_1_8
        targetCompatibility = JavaVersion.VERSION_1_8
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId = "com.example.delivery"
        // You can update the following values to match your application needs.
        // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
        minSdk = flutter.minSdkVersion
        targetSdk = flutter.targetSdkVersion
        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 = "../.."
}

위 파일은 android/app/build.gradle 파일입니다.