Flutter Statefull小部件状态在按下后重建

我有一个奇怪的问题： 我有一个像这样的小部件

class ActionDetailView extends StatefulWidget {
  static const routeName = '/actionDetails';

  @override
  _ActionDetailViewState createState() {
    print("Create state");
    return _ActionDetailViewState();
  }
}

class _ActionDetailViewState extends State<ActionDetailView>
  with WidgetsBindingObserver {
  ActionDetailBloc _bloc = ActionDetailBloc();

  _ActionDetailViewState() {
    print("ActionDetailViewState constructed");
  }

  @override
  void didChangeDependencies() {
      print("DidChangeDependencicse");
      final String actionUID = ModalRoute.of(context).settings.arguments;
    _bloc.init(actionUID);
    super.didChangeDependencies();
  }

  @override
  Widget build(BuildContext context) {
    return StreamBuilder(...)
  }

所以从日志来看，小部件的状态似乎是在未收到任何新路由的情况下重建的，所以它会造成问题，因为调用了dispose（），并且BLoC中的所有流都已关闭。StreamBuilder根据流数据和体内多个小部件或无状态小部件以两种状态之一返回Scaffold。没有任何地方被称为setState（）。导航器通过pushRouteName（）打开了小部件

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我的问题是：是什么导致了这种奇怪的行为以及如何防止它？想法是在每次推送route创建小部件时创建bloc（它包含上下文数据，所以singleton不太好）

是的，目前他们正在修复它。这是颤振

链接中还提到了一个解决方法

副本：

============= Enter to view first time =======
2020-01-08 09:53:36.760 5960-5987/ I/flutter: View action //pushed route from another place in code
2020-01-08 09:53:36.808 5960-5987/ I/flutter: Create state //constructor of State is called
2020-01-08 09:53:36.810 5960-5987/ I/flutter: ActionDetailViewState constructed //confirmation of above
2020-01-08 09:53:36.811 5960-5987/ I/flutter: DidChangeDependencicse
2020-01-08 09:53:36.812 5960-5987/ I/flutter: init actionDetailBloc //bloc init method for fill streams
2020-01-08 09:53:36.864 5960-5987/ I/flutter: LoadingUsers //loading state
2020-01-08 09:53:38.253 5960-5987/ I/flutter: pushing to stream
2020-01-08 09:53:38.276 5960-5987/ I/flutter: ReceivedList //data received
=============== Back pressed ====
2020-01-08 09:53:40.870 5960-5987/ I/flutter: DidChangeDependencicse //suddenly it is rebuilt despite not visible
2020-01-08 09:53:40.870 5960-5987/ I/flutter: init actionDetailBloc
2020-01-08 09:53:40.884 5960-5987/ I/flutter: ReceivedList
2020-01-08 09:53:42.160 5960-5987/ I/flutter: pushing to stream