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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.
/// Flutter code sample for [IndexedStack.].
import 'package:flutter/material.dart';
void main() => runApp(const MyApp());
class MyApp extends StatelessWidget {
const MyApp({super.key});
static const String _title = 'Flutter Code Sample';
@override
Widget build(BuildContext context) {
return MaterialApp(
title: _title,
home: Scaffold(
appBar: AppBar(title: const Text(_title)),
body: const MyStatefulWidget(),
),
);
}
}
class MyStatefulWidget extends StatefulWidget {
const MyStatefulWidget({super.key});
@override
State<MyStatefulWidget> createState() => _MyStatefulWidgetState();
}
class _MyStatefulWidgetState extends State<MyStatefulWidget> {
List<String> names = <String>['Dash', 'John', 'Mary'];
int index = 0;
final TextEditingController fieldText = TextEditingController();
@override
Widget build(BuildContext context) {
return Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
SizedBox(
width: 300,
child: TextField(
decoration: const InputDecoration(
border: OutlineInputBorder(),
hintText: 'Enter the name for a person to track',
),
onSubmitted: (String value) {
setState(() {
names.add(value);
});
fieldText.clear();
},
controller: fieldText,
),
),
const SizedBox(height: 50),
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
GestureDetector(
onTap: () {
setState(() {
if (index == 0) {
index = names.length - 1;
} else {
index -= 1;
}
});
},
child: const Icon(Icons.chevron_left, key: Key('gesture1')),
),
Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
IndexedStack(
index: index,
children: <Widget>[
for (String name in names) PersonTracker(name: name)
],
)
],
),
GestureDetector(
onTap: () {
setState(() {
if (index == names.length - 1) {
index = 0;
} else {
index += 1;
}
});
},
child: const Icon(Icons.chevron_right, key: Key('gesture2')),
),
],
)
],
);
}
}
class PersonTracker extends StatefulWidget {
const PersonTracker({super.key, required this.name});
final String name;
@override
State<PersonTracker> createState() => _PersonTrackerState();
}
class _PersonTrackerState extends State<PersonTracker> {
int counter = 0;
@override
Widget build(BuildContext context) {
return Container(
key: Key(widget.name),
decoration: BoxDecoration(
color: const Color.fromARGB(255, 239, 248, 255),
border: Border.all(color: const Color.fromARGB(255, 54, 60, 244)),
borderRadius: const BorderRadius.all(Radius.circular(10)),
),
padding: const EdgeInsets.all(16.0),
child: Column(
children: <Widget>[
Text('Name: ${widget.name}'),
Text('Score: $counter'),
TextButton.icon(
key: Key('increment${widget.name}'),
icon: const Icon(Icons.add),
onPressed: () {
setState(() {
counter += 1;
});
},
label: const Text('Increment'),
)
],
),
);
}
}