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samples/testing_app/lib/screens/favorites.dart

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// Copyright 2020 The Flutter team. 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';
import 'package:provider/provider.dart';
import 'package:testing_app/models/favorites.dart';
class FavoritesPage extends StatelessWidget {
static String routeName = '/favorites_page';
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Favorites'),
),
body: Consumer<Favorites>(
builder: (context, value, child) => value.items.isNotEmpty
? ListView.builder(
itemCount: value.items.length,
padding: const EdgeInsets.symmetric(vertical: 16),
itemBuilder: (context, index) =>
FavoriteItemTile(value.items[index]),
)
: Center(
child: Text('No favorites added.'),
),
),
);
}
}
class FavoriteItemTile extends StatelessWidget {
final int itemNo;
const FavoriteItemTile(
this.itemNo,
);
@override
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.all(8.0),
child: ListTile(
leading: CircleAvatar(
backgroundColor: Colors.primaries[itemNo % Colors.primaries.length],
),
title: Text(
'Item $itemNo',
key: Key('favorites_text_$itemNo'),
),
trailing: IconButton(
key: Key('remove_icon_$itemNo'),
icon: Icon(Icons.close),
onPressed: () {
Provider.of<Favorites>(context, listen: false).remove(itemNo);
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: Text('Removed from favorites.'),
duration: Duration(seconds: 1),
),
);
},
),
),
);
}
}