flutter - 类型转换中的“_InternalLinkedHashMap <dynamic，dynamic >' is not a subtype of type ' Map <String，dynamic>”

Question

我有这个通用函数:

  ValueType get<ValueType>(String keyToRead) {
    try {
      return _dataClient.get(keyToRead) as ValueType;
    } on SocketException catch (error) {...

我这样调用它:

  @override
  Map<String, dynamic> getUserRegistration() {
    return dataClient.get<Map<String, dynamic>>(UserRegistrationFieldKeys.self);
  }

但是自从我改变使用 get_storage我的 _dataClient 框到 hive框，我收到此错误:

The following ProviderException was thrown building LoggedOutPageView(dirty, dependencies: [UncontrolledProviderScope], state: _ConsumerState#6c90b):
An exception was thrown while building AutoDisposeProvider<RegisterViewModel>#00006().

Thrown exception:
type '_InternalLinkedHashMap<dynamic, dynamic>' is not a subtype of type 'Map<String, dynamic>' in type cast

Stack trace:
#0      LocalDataClient.get
package:vepo/…/data_clients/local_data_client.dart:51
#1      UserRegistrationLocalDataSource.getUserRegistration
package:vepo/…/user_registration/user_registration_local_data_source.dart:22
#2      UserRegistrationRepository.getUserRegistration
package:vepo/…/user-registration/user_registration_repository.dart:31

Hive 必须将数据存储为不同的格式，这可能是由于加密的原因，但我该如何解释并消除此错误？

Answer 1

尝试使用

Map<String, dynamic>.from(dataClient.get(UserRegistrationFieldKeys.self))`;

如果您使用它，您也可以删除通用函数。