我有这样一个模型：

import 'package:uuid/uuid.dart';
import 'package:hive/hive.dart';

part 'config_item.g.dart';

@HiveType()
class ConfigItem {
  @HiveField(0)
  String _id; // this can be a uuid or a MongoDB ObjectID
  @HiveField(1)
  final String deviceName;
....
}

我想生成适配器文件，但它不想这样做！当我调用flutter packages pub run build_runner build --delete-conflicting-outputs时，我得到以下输出：

flutter packages pub run build_runner build  --delete-conflicting-outputs                main  ✭ ✈
[INFO] Generating build script...
[INFO] Generating build script completed, took 399ms

[SEVERE] Nothing can be built, yet a build was requested.
[INFO] Initializing inputs
[INFO] Reading cached asset graph...
[INFO] Reading cached asset graph completed, took 45ms

[INFO] Checking for updates since last build...
[INFO] Checking for updates since last build completed, took 399ms

[INFO] Running build...
[INFO] Running build completed, took 3ms

[INFO] Caching finalized dependency graph...
[INFO] Caching finalized dependency graph completed, took 35ms

[INFO] Succeeded after 53ms with 0 outputs (0 actions)

在我的pubspec.yaml中，我有：

environment:
  sdk: ">=2.12.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.2
  bottom_navy_bar: ^6.0.0
  get_it: ^7.2.0
  get_it_mixin: ^3.1.3
  servicestack: ^2.0.0
  font_awesome_flutter: ^9.1.0
  hive: ^2.0.4
  hive_flutter: ^1.1.0
  path_provider: ^2.0.3
  uuid: ^3.0.4

dev_dependencies:
  flutter_test:
    sdk: flutter
  build_runner:

我试过各种方法

• 删除.dart_tool文件夹
• 将*.g.dart添加到.gitignore
• flutter clean
• 还有很多我在网上搜到的。
  但无济于事知道少了什么吗？

我正在使用flutter、dart SDK和AndroidStudio的最新（稳定）版本。