인프런 커뮤니티 질문&답변

버전을 최신으로 마춰도 에러나는 경우 해결방법 공유합니다.

일단 선생님 환경은 현재 할수 없으므로 최신버전으로 마춰주시고 최신버전 의존성도 전부 완료되었는데도 안되는 경우는 아래 부분을 해보세요.

환경 샘플 플러터 3버전

• dependencies:

  • provider: ^6.1.4

  • sqflite: ^2.0.0+4

  • json_annotation: ^4.9.0 →json 직렬화

  • freezed_annotation: ^3.0.0 →불변 코드 생성

• dev_dependencies:

  • json_serializable: ^6.9.3 → JSON 직렬화 및 역직렬화 자동 생성

  • freezed: ^3.0.6 → 불변 객체 생성

  • build_runner: ^2.4.15 → 코드 생성 도구 생성 패키지 실행

• 첫번째 방법

1.컴퓨터 off on

2.flutter clean

3.flutter pub run build_runner build

4.flutter pub run build_runner build --delete-conflicting-outputs

4단계까지 안되면...

5.신규 프로젝트 생성...

• 2번째 방법

• dependencies:

  • provider: ^6.1.4

  • sqflite: ^2.0.0+4

  • json_annotation: ^4.9.0 →json 직렬화

  • freezed_annotation: ^3.0.0 →불변 코드 생성

  • analyzer: ^6.0.0

• dev_dependencies:

  • json_serializable: ^6.9.3 → JSON 직렬화 및 역직렬화 자동 생성

  • freezed: ^3.0.6 → 불변 객체 생성

  • build_runner: ^2.4.15 → 코드 생성 도구 생성 패키지 실행

낮은 버전으로 진행 후에 높은버전으로 진행했을때

json_serializable에서 analyzer가 삭제가 제대로 안되서 문제가 되는 경우가 있는것 같습니다.

억지로 analyzer 맞추고 진행하고 되었을대

analyzer을 제거하면 잘되었습니다.

flutter 환경 세팅은 어렵군요...

시간 낭비 안되도록 공유해봅니다.

에러내용:

C:\project\flutter_cleancode\flutter_note_app> flutter pub run build_runner build

Deprecated. Use dart run instead.

[INFO] Generating build script completed, took 326ms

[WARNING] /C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/json_serializable-6.9.4/lib/src/field_helpers.dart:84:52: Error: The argument type 'ClassElement' can't be assigned to the parameter type 'InterfaceElementImpl'.

- 'ClassElement' is from 'package:analyzer/dart/element/element.dart' ('/C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/analyzer-7.4.0/lib/dart/element/element.dart').

- 'InterfaceElementImpl' is from 'package:analyzer/src/dart/element/element.dart' ('/C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/analyzer-7.4.0/lib/src/dart/element/element.dart').

for (final v in manager.getInheritedConcreteMap2(element).values) {

^

/C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/json_serializable-6.9.4/lib/src/field_helpers.dart:90:43: Error: The getter 'isGetter' isn't defined for the class 'ExecutableElementOrMember'.

- 'ExecutableElementOrMember' is from 'package:analyzer/src/dart/element/element.dart' ('/C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/analyzer-7.4.0/lib/src/dart/element/element.dart').

Try correcting the name to the name of an existing getter, or defining a getter or field named 'isGetter'.

if (v is PropertyAccessorElement && v.isGetter) {

^^^^^^^^

/C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/json_serializable-6.9.4/lib/src/field_helpers.dart:91:16: Error: The getter 'variable2' isn't defined for the class 'ExecutableElementOrMember'.

- 'ExecutableElementOrMember' is from 'package:analyzer/src/dart/element/element.dart' ('/C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/analyzer-7.4.0/lib/src/dart/element/element.dart').

Try correcting the name to the name of an existing getter, or defining a getter or field named 'variable2'.

assert(v.variable2 is FieldElement);

^^^^^^^^^

/C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/json_serializable-6.9.4/lib/src/field_helpers.dart:92:26: Error: The getter 'variable2' isn't defined for the class 'ExecutableElementOrMember'.

- 'ExecutableElementOrMember' is from 'package:analyzer/src/dart/element/element.dart' ('/C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/analyzer-7.4.0/lib/src/dart/element/element.dart').

Try correcting the name to the name of an existing getter, or defining a getter or field named 'variable2'.

final variable = v.variable2 as FieldElement;

^^^^^^^^^

/C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/json_serializable-6.9.4/lib/src/decode_helper.dart:65:23: Error: The getter 'augmented' isn't defined for the class 'ClassElement'.

- 'ClassElement' is from 'package:analyzer/dart/element/element.dart' ('/C:/Users/karyo/AppData/Local/Pub/Cache/hosted/pub.dev/analyzer-7.4.0/lib/dart/element/element.dart').

Try correcting the name to the name of an existing getter, or defining a getter or field named 'augmented'.

element.augmented

^^^^^^^^^

[INFO] Precompiling build script... completed, took 880ms

[SEVERE] Failed to precompile build script .dart_tool/build/entrypoint/build.dart.

This is likely caused by a misconfigured builder definition.