sqlite Flutter get_it工厂尚未准备就绪[Flutter get_it库与Floor数据库初始化]

mcdcgff0 于 2023-01-31 发布在 SQLite

关注(0)|答案(1)|浏览(156)

我正在尝试使用floor库和get_it库来简化调用
这个库简单实现是：

final sl = GetIt.instance;

Future<void> init() async {
  /// database
  sl.registerLazySingletonAsync<AppDatabase>(
      () => $FloorAppDatabase.databaseBuilder('app_database.db').build());

  /// http client
  sl.registerLazySingleton<ApiService>(
      () => NetworkModule().getHttpProvider().getService());

  /// call dao
  sl.registerLazySingletonAsync<UserDao>(
      () async => (await sl.getAsync<AppDatabase>()).userDao);

在main（）函数中，我调用：
等待sl.初始化（）;
但我得到错误：

You tried to access an instance of UserDao that is not ready yet
'package:get_it/get_it_impl.dart':
package:get_it/get_it_impl.dart:1
Failed assertion: line 404 pos 9: 'instanceFactory.isReady'

我的代码有什么问题？？谢谢
我已将答案引用到此https://stackoverflow.com/questions/56497896/make-a-simple-single-instanse-class-as-database-helper

sqlite

来源：https://stackoverflow.com/questions/74558194/flutter-get-it-factory-not-ready-yet-flutter-get-it-library-with-floor-database

1条答案

按热度按时间

r7xajy2e1#

使用dependsOn参考www.example.com并链接其每个模块。https://pub.dev/packages/get_it#automatic-using-dependson and chaining that its each module.
例如：

getIt.registerSingletonAsync<AppDatabase>(() async => $FloorAppDatabase
      .databaseBuilder('app_database.db')
      .addCallback(callback)
      .build());

getIt.registerSingletonWithDependencies<UserDao>(
      () => getIt<AppDatabase>().userDao,
      dependsOn: [AppDatabase]);

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sqlite Flutter get_it工厂尚未准备就绪[Flutter get_it库与Floor数据库初始化]

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