how to clear state of bloc in flutter
In Flutter, when using the BLoC (Business Logic Component) architecture, it's essential to manage the state of your BLoC properly. Here are a few ways to clear the state of a BLoC in Flutter:

**1. Using the `BlocProvider` widget**

When using the `BlocProvider` widget to provide your BLoC to your widgets, you can use the `create` callback to create a new instance of your BLoC. This will reset the state of your BLoC.
```dart
BlocProvider(
  create: (_) => MyBloc(), // Create a new instance of MyBloc
  child: MyWidget(),
);
```
**2. Using the `Bloc` constructor**

You can create a new instance of your BLoC using the `Bloc` constructor and pass it to your widgets. This will also reset the state of your BLoC.
```dart
MyBloc _myBloc = MyBloc(); // Create a new instance of MyBloc

//...

MyWidget(_myBloc); // Pass the new instance to your widget
```
**3. Calling the `close` method**

If you're using a `Bloc` with a `Stream` or `Sink`, you can call the `close` method to close the stream and reset the state of your BLoC.
```dart
_myBloc.close(); // Close the stream and reset the state
```
**4. Using a `ResetEvent`
To clear the state of a Bloc in Flutter, you can use the clear method. For example, to clear the state of a BlocUser, you can call the clear method with no arguments. This will reset the state of the Bloc and all of its children.