How To Create Keyboard Actions Using Flutter Android App

dependencies:
  flutter:
    sdk: flutter
  keyboard_actions: "^3.3.1+1"

flutter pub get

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

final Color darkBlue = Color.fromARGB(255, 18, 32, 47);

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        theme: ThemeData.dark().copyWith(scaffoldBackgroundColor: darkBlue),
        debugShowCheckedModeBanner: false,
        home: Content()
    );
  }
}

class Content extends StatefulWidget {
  const Content({
    Key key,
  }) : super(key: key);

  @override
  _ContentState createState() => _ContentState();
}

class _ContentState extends State<Content> {
  final FocusNode _nodeText1 = FocusNode();
  final FocusNode _nodeText2 = FocusNode();
  final FocusNode _nodeText3 = FocusNode();
  final FocusNode _nodeText4 = FocusNode();
  final FocusNode _nodeText5 = FocusNode();
  final FocusNode _nodeText6 = FocusNode();

  /// Creates the [KeyboardActionsConfig] to hook up the fields
  /// and their focus nodes to our [FormKeyboardActions].
  KeyboardActionsConfig _buildConfig(BuildContext context) {
    return KeyboardActionsConfig(
      keyboardActionsPlatform: KeyboardActionsPlatform.ALL,
      keyboardBarColor: Colors.grey[200],
      nextFocus: true,
      actions: [
        KeyboardActionsItem(
          focusNode: _nodeText1,
        ),
        KeyboardActionsItem(focusNode: _nodeText2, toolbarButtons: [
              (node) {
            return GestureDetector(
              onTap: () => node.unfocus(),
              child: Padding(
                padding: EdgeInsets.all(8.0),
                child: Icon(Icons.close),
              ),
            );
          }
        ]),
        KeyboardActionsItem(
          focusNode: _nodeText3,
          onTapAction: () {
            showDialog(
                context: context,
                builder: (context) {
                  return AlertDialog(
                    content: Text("Custom Action"),
                    actions: <Widget>[
                      FlatButton(
                        child: Text("OK"),
                        onPressed: () => Navigator.of(context).pop(),
                      )
                    ],
                  );
                });
          },
        ),
        KeyboardActionsItem(
          focusNode: _nodeText4,
//          displayCloseWidget: false,
        ),
        KeyboardActionsItem(
          focusNode: _nodeText5,
          toolbarButtons: [
            //button 1
                (node) {
              return GestureDetector(
                onTap: () => node.unfocus(),
                child: Container(
                  color: Colors.white,
                  padding: EdgeInsets.all(8.0),
                  child: Text(
                    "CLOSE",
                    style: TextStyle(color: Colors.black),
                  ),
                ),
              );
            },
            //button 2
                (node) {
              return GestureDetector(
                onTap: () => node.unfocus(),
                child: Container(
                  color: Colors.black,
                  padding: EdgeInsets.all(8.0),
                  child: Text(
                    "DONE",
                    style: TextStyle(color: Colors.white),
                  ),
                ),
              );
            }
          ],
        ),
        KeyboardActionsItem(
          focusNode: _nodeText6,
          footerBuilder: (_) => PreferredSize(
              child: SizedBox(
                  height: 40,
                  child: Center(
                    child: Text('Custom Footer'),
                  )),
              preferredSize: Size.fromHeight(40)),
        ),
      ],
    );
  }

  @override
  Widget build(BuildContext context) {
    return KeyboardActions(
      config: _buildConfig(context),
      child: Center(
        child: Padding(
          padding: const EdgeInsets.all(15.0),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: <Widget>[
              TextField(
                keyboardType: TextInputType.number,
                focusNode: _nodeText1,
                decoration: InputDecoration(
                  hintText: "Input Number",
                ),
              ),
              TextField(
                keyboardType: TextInputType.text,
                focusNode: _nodeText2,
                decoration: InputDecoration(
                  hintText: "Input Text with Custom Done Button",
                ),
              ),
              TextField(
                keyboardType: TextInputType.number,
                focusNode: _nodeText3,
                decoration: InputDecoration(
                  hintText: "Input Number with Custom Action",
                ),
              ),
              TextField(
                keyboardType: TextInputType.text,
                focusNode: _nodeText4,
                decoration: InputDecoration(
                  hintText: "Input Text without Done button",
                ),
              ),
              TextField(
                keyboardType: TextInputType.number,
                focusNode: _nodeText5,
                decoration: InputDecoration(
                  hintText: "Input Number with Toolbar Buttons",
                ),
              ),
              TextField(
                keyboardType: TextInputType.number,
                focusNode: _nodeText6,
                decoration: InputDecoration(
                  hintText: "Input Number with Custom Footer",
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}