In Flutter, if you have a `StatefulWidget` that uses `AutomaticKeepAliveClientMixin` and you want to manually dispose of it, you can do so in the `dispose` method of the widget. However, you should call `super.dispose()` to ensure that the automatic state restoration functionality works correctly. Here's how you can do it:
```dart
import 'package:flutter/material.dart';
class KeepAliveExample extends StatefulWidget {
@override
_KeepAliveExampleState createState() => _KeepAliveExampleState();
}
class _KeepAliveExampleState extends State<KeepAliveExample> with AutomaticKeepAliveClientMixin {
// Override wantKeepAlive to return true so that the state is kept alive.
@override
bool get wantKeepAlive => true;
// Dispose the state when no longer needed.
@override
void dispose() {
super.dispose(); // Call super.dispose() first
// Additional cleanup if needed
}
@override
Widget build(BuildContext context) {
super.build(context); // Call super.build(context) to ensure the state is kept alive.
return Container(
child: Text('Keep Alive Example'),
);
}
}
```
In the code above:
1. We have a `StatefulWidget` named `KeepAliveExample` that uses `AutomaticKeepAliveClientMixin`.
2. We override the `wantKeepAlive` getter to return `true` to indicate that we want to keep the state alive.
3. In the `dispose` method, we call `super.dispose()` first to ensure that the automatic state restoration functionality works correctly. After that, you can perform any additional cleanup or disposal tasks if needed.
By calling `super.dispose()` and implementing your custom disposal logic, you can effectively dispose of a `StatefulWidget` that uses the `AutomaticKeepAliveClientMixin` while ensuring proper behavior when the widget is recreated.