TextField class - material library - Dart API
API docs for the TextField class from the material library, for the Dart programming language.
lib/my_app.dart
import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';
import 'package:my_app_01/my_first_page.dart';
import 'package:my_app_01/my_home_page.dart';
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
localizationsDelegates: AppLocalizations.localizationsDelegates,
supportedLocales: AppLocalizations.supportedLocales,
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: DefaultTabController(
length: 3,
child: Scaffold(
appBar: AppBar(
bottom: const TabBar(
tabs: [
Tab(icon: Icon(Icons.looks_one)),
Tab(icon: Icon(Icons.looks_two)),
Tab(icon: Icon(Icons.looks_3)),
],
),
title: const Text('Tabs Demo'),
),
body: const TabBarView(
children: [
MyFirstPage(),
Icon(Icons.looks_two),
MyHomePage(title: 'Flutter Demo Home Page'),
],
),
),
),
);
}
}
lib/my_first_page.dart
import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/app_localizations.dart';
class MyFirstPage extends StatefulWidget {
const MyFirstPage({Key? key}) : super(key: key);
@override
State<MyFirstPage> createState() => _MyFirstPageState();
}
class _MyFirstPageState extends State<MyFirstPage> {
late TextEditingController _controller;
@override
void initState() {
super.initState();
_controller = TextEditingController();
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(AppLocalizations.of(context)!.firstPage),
),
body: Container(
padding: const EdgeInsets.all(8),
child: Column(
children: <Widget>[
const Text('First Page'),
TextField(
controller: _controller,
onSubmitted: (String value) async {
await showDialog<void>(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: const Text('Title'),
content: Text(
'"$value", which has length ${value.characters.length}.'),
actions: <Widget>[
TextButton(
onPressed: () {
Navigator.pop(context);
},
child: const Text('OK'),
),
],
);
},
);
},
),
],
),
),
);
}
}
lib/l10n/app_en.arb
{
"helloWorld": "Hello World!",
"@helloWorld": {
"description": "The conventional newborn programmer greeting"
},
"firstPage": "First Page","@firstPage": {"description": "First Page Title"}
}
lib/l10n/app_ja.arb
{
"helloWorld": "こんにちは。",
"firstPage": "最初のページ"
}
