two_textWidget.dart

import 'package:flutter/material.dart';

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

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  String nameOne = "";
  String nameTwo = "";

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Column(
        children: <Widget>[
          TextField(
            controller: TextEditingController(text: nameOne),
            decoration: InputDecoration(hintText: 'Name'),
            onSubmitted: (String text) {
              setState(() {
                nameOne = text;
              });
            }
          ),
          TextField(
            controller: TextEditingController(text: nameTwo),
            decoration: InputDecoration(hintText: 'Name'),
            onSubmitted: (String text) {
              setState(() {
                nameTwo = text;
              });
            }
          ),
        ],
      ),
    );
  }
}