import 'package:flutter/material.dart';
import 'package:flutter_text_field_fab/flutter_text_field_fab.dart';

class SomeListView extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
        return Scaffold(
            floatingActionButton: TextFieldFloatingActionButton(
                'Search...',
                Icons.gamepad,
                onChange: (String query) => filterList(query),
                onClear: () => clearList(),
            ),
            body: ...);
    }
}