Ejemplo: buscar en la vista de lista de flutter
import 'package:flutter/material.dart';void main() => runApp(new MyApp());class MyApp extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext context) { return new MaterialApp( title: 'Flutter Demo', theme: new ThemeData( primarySwatch: Colors.blue, ), home: new MyHomePage(title: 'ListView with Search), ); }}class MyHomePage extends StatefulWidget { MyHomePage({Key key, this.title}) : super(key: key); final String title; @override _MyHomePageState createState() => new _MyHomePageState();}class _MyHomePageState extends State<MyHomePage> { TextEditingController editingController = TextEditingController(); final duplicateItems = List<String>.generate(10000, (i) => "Item $i"); var items = List<String>(); @override void initState() { items.addAll(duplicateItems); super.initState(); } void filterSearchResults(String query) { List<String> dummySearchList = List<String>(); dummySearchList.addAll(duplicateItems); if(query.isNotEmpty) { List<String> dummyListData = List<String>(); dummySearchList.forEach((item) { if(item.contains(query)) { dummyListData.add(item); } }); setState(() { items.clear(); items.addAll(dummyListData); }); return; } else { setState(() { items.clear(); items.addAll(duplicateItems); }); } } @override Widget build(BuildContext context) { return new Scaffold( appBar: new AppBar( title: new Text(widget.title), ), body: Container( child: Column( children: <Widget>[ Padding( padding: const EdgeInsets.all(8.0), child: TextField( onChanged: (value) { filterSearchResults(value); }, controller: editingController, decoration: InputDecoration( labelText: "Search", hintText: "Search", prefixIcon: Icon(Icons.search), border: OutlineInputBorder( borderRadius: BorderRadius.all(Radius.circular(25.0)))), ), ), Expanded( child: ListView.builder( shrinkWrap: true, itemCount: items.length, itemBuilder: (context, index) { return ListTile( title: Text('${items[index]}'), ); }, ), ), ], ), ), ); }}¡Haz clic para puntuar esta entrada!
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