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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].*
82 lines
2.1 KiB
Dart
82 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 MaterialBannerUseCase extends UseCase {
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@override
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String get name => 'MaterialBanner';
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@override
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String get route => '/material_banner';
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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({super.key});
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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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final FocusNode dismissButtonFocusNode = FocusNode();
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final FocusNode showButtonFocusNode = FocusNode();
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String pageTitle = getUseCaseName(MaterialBannerUseCase());
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@override
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void dispose() {
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dismissButtonFocusNode.dispose();
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showButtonFocusNode.dispose();
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super.dispose();
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}
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void hideBanner() {
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ScaffoldMessenger.of(context).hideCurrentMaterialBanner();
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showButtonFocusNode.requestFocus();
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}
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void showBanner() {
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ScaffoldMessenger.of(context).showMaterialBanner(
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MaterialBanner(
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padding: const EdgeInsets.all(20),
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content: const Text('Hello, I am a Material Banner'),
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leading: const Icon(Icons.agriculture_outlined),
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backgroundColor: Colors.yellowAccent,
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actions: <Widget>[
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TextButton(
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focusNode: dismissButtonFocusNode,
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onPressed: hideBanner,
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child: const Text('DISMISS'),
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),
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],
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),
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);
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dismissButtonFocusNode.requestFocus();
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}
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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: ElevatedButton(
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focusNode: showButtonFocusNode,
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onPressed: showBanner,
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child: const Text('Show a MaterialBanner'),
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),
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),
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);
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}
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}
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