blob: a578a832e926c299054d6550b1c48703202b51e7 [file] [log] [blame]
// Copyright 2013 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';
import 'package:go_router/go_router.dart';
void main() => runApp(App());
/// The main app.
class App extends StatelessWidget {
/// Creates an [App].
App({Key? key}) : super(key: key);
/// The title of the app.
static const String title = 'GoRouter Example: Custom Error Screen';
@override
Widget build(BuildContext context) => MaterialApp.router(
routeInformationProvider: _router.routeInformationProvider,
routeInformationParser: _router.routeInformationParser,
routerDelegate: _router.routerDelegate,
title: title,
);
final GoRouter _router = GoRouter(
routes: <GoRoute>[
GoRoute(
path: '/',
builder: (BuildContext context, GoRouterState state) =>
const Page1Screen(),
),
GoRoute(
path: '/page2',
builder: (BuildContext context, GoRouterState state) =>
const Page2Screen(),
),
],
errorBuilder: (BuildContext context, GoRouterState state) =>
ErrorScreen(state.error!),
);
}
/// The screen of the first page.
class Page1Screen extends StatelessWidget {
/// Creates a [Page1Screen].
const Page1Screen({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) => Scaffold(
appBar: AppBar(title: const Text(App.title)),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
onPressed: () => context.go('/page2'),
child: const Text('Go to page 2'),
),
],
),
),
);
}
/// The screen of the second page.
class Page2Screen extends StatelessWidget {
/// Creates a [Page2Screen].
const Page2Screen({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) => Scaffold(
appBar: AppBar(title: const Text(App.title)),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
ElevatedButton(
onPressed: () => context.go('/'),
child: const Text('Go to home page'),
),
],
),
),
);
}
/// The screen of the error page
class ErrorScreen extends StatelessWidget {
/// Creates an [ErrorScreen].
const ErrorScreen(this.error, {Key? key}) : super(key: key);
/// The error to display.
final Exception error;
@override
Widget build(BuildContext context) => Scaffold(
appBar: AppBar(title: const Text('My "Page Not Found" Screen')),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
SelectableText(error.toString()),
TextButton(
onPressed: () => context.go('/'),
child: const Text('Home'),
),
],
),
),
);
}