在我的提醒应用程序中，当我单击“添加提醒”按钮时，它实际上将提醒添加到了数据库中，然后更新了我的提醒，但提醒列表并未重建。由于某些原因，当我删除提醒时，类似的情况也很好用。

我集团的一部分：

  void _loadReminders() async {
    final reminders = await _repository.getAllReminders();
    reminders.sort((a, b) => a.dateTime.isAfter(b.dateTime) ? 1 : -1);
    if (reminders.isNotEmpty) {
      add(RemindersLoaded(reminders: reminders));
    }
  }

  @override
  Stream<MainState> mapEventToState(MainEvent event) async* {
    if (event is ItemSelected) {
      yield state.copyWith(isSelectedModeActive: true);
    } else if (event is SelectModeDisabled) {
      yield state.copyWith(isSelectedModeActive: false);
    } else if (event is RemindersLoaded) {
      yield state.copyWith(reminders: event.reminders);
    } else if (event is SaveReminderPressed) {
      await _saveReminder(event.reminder);
      _loadReminders();
    } else if (event is DeletePressed) {
      await deleteReminders();
      _loadReminders();
      add(SelectModeDisabled());
    }
  }

小部件：

  Widget _remindersList(BuildContext context) =>
      BlocBuilder<MainBloc, MainState>(
        builder: (context, state) {
          return ListView.builder(
            itemCount: state.reminders.length,
            itemBuilder: (context, index) {
              return ReminderItem(reminders: state.reminders, index: index);
            },
          );
        },
      );

状态：

class MainState extends Equatable {
  final bool isSelectedModeActive;
  final List<Reminder> reminders;
  final int quantityOfSelectedItems;

  MainState({
    this.isSelectedModeActive = false,
    this.reminders,
  }) : quantityOfSelectedItems =
            reminders.where((reminder) => reminder.isSelected).length;

  MainState copyWith({
    bool isSelectedModeActive,
    List<Reminder> reminders,
  }) =>
      MainState(
        isSelectedModeActive: isSelectedModeActive ?? this.isSelectedModeActive,
        reminders: List<Reminder>()..addAll(reminders ?? this.reminders),
      );

  @override
  List<Object> get props => [
        isSelectedModeActive,
        reminders,
        quantityOfSelectedItems,
      ];
}

浪费了几天，想解决这个问题。有关更多详细信息，你可以在github上查看我的项目：https : //github.com/rockstar4095/reminder_flutter_app/tree/main_screen