■ TextEditingController 클래스를 사용하는 방법을 보여준다.
▶ main.dart
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import 'package:flutter/material.dart'; void main() => runApp(TestApplication()); class TestApplication extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( title: 'Test Application', home: MainPage(), ); } } class MainPage extends StatefulWidget { @override _MainPageState createState() => _MainPageState(); } class _MainPageState extends State<MainPage> { final controller = TextEditingController(); @override void initState() { super.initState(); controller.addListener(_printLatestValue); } @override void dispose() { controller.dispose(); super.dispose(); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: Text('Test Application'), ), body: Padding( padding: const EdgeInsets.all(16.0), child: Column( children: <Widget>[ TextField( onChanged: (text) { print("첫 번째 텍스트 필드 : $text"); }, ), TextField( controller: controller, ), ], ), ), ); } _printLatestValue() { print("두 번째 텍스트 필드 : ${controller.text}"); } } |
