93 lines
2.4 KiB
Dart
93 lines
2.4 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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class AdaptedListItem extends StatelessWidget {
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const AdaptedListItem({super.key, required this.name});
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final String name;
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@override
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Widget build(BuildContext context) {
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return Row(
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children: <Widget>[
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Container(
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width: 32.0,
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height: 32.0,
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margin: const EdgeInsets.all(8.0),
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color: Colors.lightBlueAccent.shade100,
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),
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Text(name),
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],
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);
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}
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}
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class AdaptedGridItem extends StatelessWidget {
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const AdaptedGridItem({super.key, required this.name});
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final String name;
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@override
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Widget build(BuildContext context) {
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return Card(
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child: Column(
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children: <Widget>[
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Expanded(child: Container(color: Colors.lightBlueAccent.shade100)),
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Container(
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margin: const EdgeInsets.only(left: 8.0),
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child: Row(
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children: <Widget>[
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Expanded(child: Text(name)),
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const IconButton(icon: Icon(Icons.more_vert), onPressed: null),
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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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}
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const double _kListItemExtent = 50.0;
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const double _kMaxTileWidth = 150.0;
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const double _kGridViewBreakpoint = 450.0;
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class AdaptiveContainer extends StatelessWidget {
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const AdaptiveContainer({super.key, required this.names});
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final List<String> names;
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@override
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Widget build(BuildContext context) {
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if (MediaQuery.of(context).size.width < _kGridViewBreakpoint) {
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return ListView(
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itemExtent: _kListItemExtent,
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children: names.map<Widget>((String name) => AdaptedListItem(name: name)).toList(),
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);
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} else {
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return GridView.extent(
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maxCrossAxisExtent: _kMaxTileWidth,
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children: names.map<Widget>((String name) => AdaptedGridItem(name: name)).toList(),
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);
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}
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}
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}
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List<String> _initNames() => List<String>.generate(30, (int i) => 'Item $i');
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final List<String> _kNames = _initNames();
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void main() {
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runApp(
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MaterialApp(
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title: 'Media Query Example',
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home: Scaffold(
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appBar: AppBar(title: const Text('Media Query Example')),
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body: Material(child: AdaptiveContainer(names: _kNames)),
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),
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),
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);
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}
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