How To Retrieve Text Input Using Flutter Android Dart

import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Retrieve Text Input',
      home: MyCustomForm(),
    );
  }
}

class MyCustomForm extends StatefulWidget {
  @override
  _MyCustomFormState createState() => _MyCustomFormState();
}


class _MyCustomFormState extends State<MyCustomForm> {
  final myController = TextEditingController();
  @override
  void dispose() {
    myController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Colors.indigo,
        title: Text('Retrieve Text Input'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: TextField(
          controller: myController,
        ),
      ),
      floatingActionButton: FloatingActionButton(
        backgroundColor: Colors.indigo,
        onPressed: () {
          return showDialog(
            context: context,
            builder: (context) {
              return AlertDialog(
                content: Text(myController.text),
              );
            },
          );
        },
        tooltip: 'Show me the value!',
        child: Icon(Icons.text_fields),
      ),
    );
  }
}