5fad2bea2a
Adds usage of SystemChrome.setAPplicationSwitcherDescription to update the page title for the AutoComplete demo page. [Before screenshot: example AutoComplete](https://screenshot.googleplex.com/8DpESj4QrQA2YrW) [After screenshot: example AutoComplete](https://screenshot.googleplex.com/6AdfSA8a8VwUaXM) Fixes b/338056490 *Replace this paragraph with a description of what this PR is changing or adding, and why. Consider including before/after screenshots.* *List which issues are fixed by this PR. You must list at least one issue. An issue is not required if the PR fixes something trivial like a typo.* *If you had to change anything in the [flutter/tests] repo, include a link to the migration guide as per the [breaking change policy].*
80 lines
2.1 KiB
Dart
80 lines
2.1 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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import '../utils.dart';
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import 'use_cases.dart';
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class AutoCompleteUseCase extends UseCase {
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@override
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String get name => 'AutoComplete';
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@override
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String get route => '/auto-complete';
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@override
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Widget build(BuildContext context) => const _MainWidget();
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}
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class _MainWidget extends StatefulWidget {
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const _MainWidget();
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@override
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State<_MainWidget> createState() => _MainWidgetState();
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}
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class _MainWidgetState extends State<_MainWidget> {
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static const List<String> _kOptions = <String>[
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'apple',
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'banana',
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'lemon',
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];
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static Widget _fieldViewBuilder(
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BuildContext context,
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TextEditingController textEditingController,
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FocusNode focusNode,
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VoidCallback onFieldSubmitted) {
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return TextFormField(
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focusNode: focusNode,
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controller: textEditingController,
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onFieldSubmitted: (String value) {
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onFieldSubmitted();
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},
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);
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}
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String pageTitle = getUseCaseName(AutoCompleteUseCase());
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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backgroundColor: Theme.of(context).colorScheme.inversePrimary,
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title: Semantics(headingLevel: 1, child: Text('$pageTitle Demo')),
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),
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body: Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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Text(
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'Type below to autocomplete the following possible results: $_kOptions.'),
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Autocomplete<String>(
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optionsBuilder: (TextEditingValue textEditingValue) {
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if (textEditingValue.text == '') {
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return const Iterable<String>.empty();
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}
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return _kOptions.where((String option) {
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return option.contains(textEditingValue.text.toLowerCase());
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});
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},
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fieldViewBuilder: _fieldViewBuilder,
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),
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],
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),
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),
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);
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}
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}
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