| // Copyright 2014 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| import 'package:flutter/cupertino.dart'; |
| import 'package:flutter/material.dart'; |
| import '../../gallery_localizations.dart'; |
| |
| // BEGIN cupertinoSearchTextFieldDemo |
| |
| class CupertinoSearchTextFieldDemo extends StatefulWidget { |
| const CupertinoSearchTextFieldDemo({super.key}); |
| |
| @override |
| State<CupertinoSearchTextFieldDemo> createState() => |
| _CupertinoSearchTextFieldDemoState(); |
| } |
| |
| class _CupertinoSearchTextFieldDemoState |
| extends State<CupertinoSearchTextFieldDemo> { |
| final List<String> platforms = <String>[ |
| 'Android', |
| 'iOS', |
| 'Windows', |
| 'Linux', |
| 'MacOS', |
| 'Web' |
| ]; |
| |
| final TextEditingController _queryTextController = TextEditingController(); |
| String _searchPlatform = ''; |
| List<String> filteredPlatforms = <String>[]; |
| |
| @override |
| void initState() { |
| super.initState(); |
| filteredPlatforms = platforms; |
| _queryTextController.addListener(() { |
| if (_queryTextController.text.isEmpty) { |
| setState(() { |
| _searchPlatform = ''; |
| filteredPlatforms = platforms; |
| }); |
| } else { |
| setState(() { |
| _searchPlatform = _queryTextController.text; |
| }); |
| } |
| }); |
| } |
| |
| @override |
| Widget build(BuildContext context) { |
| final GalleryLocalizations localizations = GalleryLocalizations.of(context)!; |
| return CupertinoPageScaffold( |
| navigationBar: CupertinoNavigationBar( |
| automaticallyImplyLeading: false, |
| middle: Text(localizations.demoCupertinoSearchTextFieldTitle), |
| ), |
| child: SafeArea( |
| child: Column( |
| children: <Widget>[ |
| CupertinoSearchTextField( |
| controller: _queryTextController, |
| restorationId: 'search_text_field', |
| padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 12), |
| decoration: const BoxDecoration( |
| border: Border( |
| bottom: BorderSide( |
| width: 0, |
| color: CupertinoColors.inactiveGray, |
| ), |
| ), |
| ), |
| placeholder: |
| localizations.demoCupertinoSearchTextFieldPlaceholder, |
| ), |
| _buildPlatformList(), |
| ], |
| ), |
| ), |
| ); |
| } |
| |
| Widget _buildPlatformList() { |
| if (_searchPlatform.isNotEmpty) { |
| final String search = _searchPlatform.toLowerCase(); |
| filteredPlatforms = <String>[ |
| for (final String platform in filteredPlatforms) |
| if (platform.toLowerCase().contains(search)) platform |
| ]; |
| } |
| return ListView.builder( |
| itemCount: filteredPlatforms.length, |
| shrinkWrap: true, |
| itemBuilder: (BuildContext context, int index) { |
| return ListTile(title: Text(filteredPlatforms[index])); |
| }, |
| ); |
| } |
| } |
| |
| // END |