109 lines
3.4 KiB
Dart
109 lines
3.4 KiB
Dart
// Copyright 2013 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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import 'package:go_router/go_router.dart';
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/// This app shows how to dynamically add more route into routing config
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void main() => runApp(const MyApp());
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/// The main app.
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class MyApp extends StatefulWidget {
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/// Constructs a [MyApp]
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const MyApp({super.key});
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@override
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State<MyApp> createState() => _MyAppState();
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}
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class _MyAppState extends State<MyApp> {
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bool isNewRouteAdded = false;
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late final ValueNotifier<RoutingConfig> myConfig =
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ValueNotifier<RoutingConfig>(_generateRoutingConfig());
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late final GoRouter router = GoRouter.routingConfig(
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routingConfig: myConfig,
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errorBuilder: (_, GoRouterState state) => Scaffold(
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appBar: AppBar(title: const Text('Page not found')),
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body: Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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Text('${state.uri} does not exist'),
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ElevatedButton(
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onPressed: () => router.go('/'),
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child: const Text('Go to home')),
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],
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)),
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));
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RoutingConfig _generateRoutingConfig() {
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return RoutingConfig(
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routes: <RouteBase>[
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GoRoute(
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path: '/',
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builder: (_, __) {
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return Scaffold(
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appBar: AppBar(title: const Text('Home')),
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body: Center(
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child: Row(
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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ElevatedButton(
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onPressed: isNewRouteAdded
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? null
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: () {
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setState(() {
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isNewRouteAdded = true;
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// Modify the routing config.
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myConfig.value = _generateRoutingConfig();
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});
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},
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child: isNewRouteAdded
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? const Text('A route has been added')
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: const Text('Add a new route'),
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),
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ElevatedButton(
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onPressed: () {
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router.go('/new-route');
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},
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child: const Text('Try going to /new-route'),
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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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if (isNewRouteAdded)
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GoRoute(
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path: '/new-route',
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builder: (_, __) {
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return Scaffold(
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appBar: AppBar(title: const Text('A new Route')),
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body: Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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ElevatedButton(
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onPressed: () => router.go('/'),
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child: const Text('Go to home')),
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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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@override
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Widget build(BuildContext context) {
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return MaterialApp.router(
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routerConfig: router,
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);
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}
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}
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