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