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This auto-formats all *.dart files in the repository outside of the `engine` subdirectory and enforces that these files stay formatted with a presubmit check. **Reviewers:** Please carefully review all the commits except for the one titled "formatted". The "formatted" commit was auto-generated by running `dev/tools/format.sh -a -f`. The other commits were hand-crafted to prepare the repo for the formatting change. I recommend reviewing the commits one-by-one via the "Commits" tab and avoiding Github's "Files changed" tab as it will likely slow down your browser because of the size of this PR. --------- Co-authored-by: Kate Lovett <katelovett@google.com> Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
76 lines
2.3 KiB
Dart
76 lines
2.3 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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/// Flutter code sample for [CustomScrollView].
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void main() => runApp(const CustomScrollViewExampleApp());
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class CustomScrollViewExampleApp extends StatelessWidget {
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const CustomScrollViewExampleApp({super.key});
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@override
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Widget build(BuildContext context) {
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return const MaterialApp(home: CustomScrollViewExample());
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}
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}
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class CustomScrollViewExample extends StatefulWidget {
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const CustomScrollViewExample({super.key});
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@override
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State<CustomScrollViewExample> createState() => _CustomScrollViewExampleState();
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}
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class _CustomScrollViewExampleState extends State<CustomScrollViewExample> {
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List<int> top = <int>[];
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List<int> bottom = <int>[0];
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@override
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Widget build(BuildContext context) {
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const Key centerKey = ValueKey<String>('bottom-sliver-list');
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return Scaffold(
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appBar: AppBar(
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title: const Text('Press on the plus to add items above and below'),
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leading: IconButton(
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icon: const Icon(Icons.add),
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onPressed: () {
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setState(() {
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top.add(-top.length - 1);
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bottom.add(bottom.length);
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});
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},
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),
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),
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body: CustomScrollView(
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center: centerKey,
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slivers: <Widget>[
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SliverList(
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delegate: SliverChildBuilderDelegate((BuildContext context, int index) {
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return Container(
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alignment: Alignment.center,
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color: Colors.blue[200 + top[index] % 4 * 100],
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height: 100 + top[index] % 4 * 20.0,
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child: Text('Item: ${top[index]}'),
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);
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}, childCount: top.length),
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),
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SliverList(
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key: centerKey,
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delegate: SliverChildBuilderDelegate((BuildContext context, int index) {
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return Container(
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alignment: Alignment.center,
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color: Colors.blue[200 + bottom[index] % 4 * 100],
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height: 100 + bottom[index] % 4 * 20.0,
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child: Text('Item: ${bottom[index]}'),
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);
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}, childCount: bottom.length),
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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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