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lib/13/01___/main.dart

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+import 'package:flutter/material.dart';
+import 'package:url_strategy/url_strategy.dart';
+
+import 'pages/app.dart';
+
+
+
+void main() {
+  setHashUrlStrategy();
+  runApp(const App());
+}
+
+
+
+

lib/13/01___/pages/app.dart

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+import 'package:flutter/material.dart';
+import '../route/parser.dart';
+import '../route/route_state.dart';
+
+class App extends StatefulWidget {
+  const App({super.key});
+
+  @override
+  State<App> createState() => _AppState();
+}
+
+AppRouteParser parser = AppRouteParser();
+AppRouterDelegate routerDelegate = AppRouterDelegate();
+
+class _AppState extends State<App> {
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp.router(
+      routerDelegate: routerDelegate,
+      routeInformationParser: parser,
+      // backButtonDispatcher: RootBackButtonDispatcher(),
+      theme: ThemeData(
+          useMaterial3: true,
+          appBarTheme: const AppBarTheme(
+              elevation: 0,
+              iconTheme: IconThemeData(color: Colors.black),
+              titleTextStyle: TextStyle(
+                color: Colors.black,
+                fontSize: 18,
+                fontWeight: FontWeight.bold,
+              ))),
+      debugShowCheckedModeBanner: false,
+    );
+  }
+}

lib/13/01___/pages/color_add_page.dart

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+import 'dart:math';
+
+import 'package:flutter/material.dart';
+
+class ColorAddPage extends StatefulWidget {
+  const ColorAddPage({super.key});
+
+  @override
+  State<ColorAddPage> createState() => _ColorAddPageState();
+}
+
+class _ColorAddPageState extends State<ColorAddPage> {
+  late Color _color;
+
+  @override
+  void initState() {
+    super.initState();
+    _color = randomColor;
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    String text = '# ${_color.value.toRadixString(16)}';
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('添加颜色'),
+        actions: [IconButton(onPressed: _selectColor, icon: Icon(Icons.check ))],
+      ),
+      body: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 16.0,vertical: 20),
+        child: Row(
+          children: [
+            Expanded(child: Text(text,style: TextStyle(color: _color,fontSize: 24,letterSpacing: 4),)),
+            Container(
+              margin: EdgeInsets.only(left: 10),
+              width: 40,
+              height: 40,
+              child: Icon(
+                Icons.sell_outlined,
+                color: Colors.white,
+              ),
+              decoration: BoxDecoration(
+                color: _color,
+                borderRadius: BorderRadius.circular(8),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Random _random = Random();
+
+  Color get randomColor {
+    return Color.fromARGB(
+      255,
+      _random.nextInt(256),
+      _random.nextInt(256),
+      _random.nextInt(256),
+    );
+  }
+
+  void _selectColor() {
+    Navigator.of(context).pop(_color);
+  }
+}

lib/13/01___/pages/home_page.dart

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+import 'package:flutter/material.dart';
+import '../route/route_state.dart';
+import 'app.dart';
+import 'color_add_page.dart';
+
+import '../../../common/components/colors_panel.dart';
+import '../../../common/pages/stl_color_page.dart';
+
+class HomePage extends StatefulWidget {
+  const HomePage({super.key});
+
+  @override
+  State<HomePage> createState() => _HomePageState();
+}
+
+class _HomePageState extends State<HomePage> {
+  final List<Color> _colors = [
+    Colors.red, Colors.black, Colors.blue, Colors.green, Colors.orange,
+    Colors.pink, Colors.purple, Colors.indigo, Colors.amber, Colors.cyan,
+    Colors.redAccent, Colors.grey, Colors.blueAccent, Colors.greenAccent, Colors.orangeAccent,
+    Colors.pinkAccent, Colors.purpleAccent, Colors.indigoAccent, Colors.amberAccent, Colors.cyanAccent,
+  ];
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title:const Text('颜色主页')),
+      floatingActionButton: FloatingActionButton(
+        onPressed: _toAddPage,
+        child: const Icon(Icons.add),
+      ),
+      body: ColorsPanel(
+        colors: _colors,
+        onSelect: _selectColor,
+      ),
+    );
+  }
+
+  void _selectColor(Color color){
+    String value = color.value.toRadixString(16);
+    routerDelegate.go('/color/detail?color=$value');
+  }
+
+  void _toAddPage() async {
+    routerDelegate.go('/color/add');
+  }
+}

lib/13/01___/route/parsed_route.dart

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+// Copyright 2021, the Flutter project authors. Please see the AUTHORS file
+// for details. 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:collection/collection.dart';
+import 'package:equatable/equatable.dart';
+import 'package:quiver/core.dart';
+
+/// A route path that has been parsed by [TemplateRouteParser].
+class ParsedRoute extends Equatable{
+  /// The current path location without query parameters. (/book/123)
+  final String path;
+
+  /// The query parameters ({search: abc})
+  final Map<String, String> queryParameters;
+
+  const ParsedRoute(this.path,  this.queryParameters);
+
+  @override
+  List<Object?> get props => [path,queryParameters];
+}

lib/13/01___/route/parser.dart

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+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:iroute/common/pages/stl_color_page.dart';
+import 'package:path_to_regexp/path_to_regexp.dart';
+import '../pages/app.dart';
+import '../pages/home_page.dart';
+import '../pages/color_add_page.dart';
+import 'parsed_route.dart';
+import 'route_state.dart';
+
+class AppRouteParser extends RouteInformationParser<ParsedRoute> {
+  @override
+  Future<ParsedRoute> parseRouteInformation(
+      RouteInformation routeInformation) async {
+    print("=======parseRouteInformation:${routeInformation.uri.path}===================");
+
+    final uri = routeInformation.uri;
+    final path = uri.toString();
+    final queryParams = uri.queryParameters;
+
+    return ParsedRoute(path, queryParams);
+  }
+
+  @override
+  RouteInformation? restoreRouteInformation(ParsedRoute configuration) {
+    print("=======restoreRouteInformation:${configuration}===================");
+    return RouteInformation(uri: Uri.parse(configuration.path));
+  }
+}
+
+class AppRouterDelegate extends RouterDelegate<ParsedRoute>
+    with ChangeNotifier, PopNavigatorRouterDelegateMixin {
+
+  AppRouterDelegate({String initial = '/'}) {
+    _routes.add(ParsedRoute(initial, {}));
+  }
+
+   final List<ParsedRoute> _routes = [];
+
+  @override
+  final GlobalKey<NavigatorState> navigatorKey = GlobalKey<NavigatorState>();
+
+  @override
+  ParsedRoute get currentConfiguration {
+    return _routes.last;
+  }
+
+  Future<void> go(String route) async {
+    ParsedRoute _route = await parser.parseRouteInformation(RouteInformation(uri: Uri.parse(route)));
+    if(_route!=_routes.last){
+      _routes.add(_route);
+    }
+    notifyListeners();
+  }
+
+  final _addColorKey = const ValueKey('addColor');
+  final _colorDetailKey = const ValueKey('ColorDetail');
+
+  @override
+  Widget build(BuildContext context) {
+    List<Page> pages = [];
+
+    for (ParsedRoute route in _routes) {
+      Page? page = _buildPageByPath(route);
+      if(page!=null){
+        pages.add(page);
+      }
+    }
+
+    return Navigator(
+      key: navigatorKey,
+      pages: pages,
+      onPopPage: _onPagePop,
+    );
+  }
+
+  Page? _buildPageByPath(ParsedRoute route) {
+    if(route.path == '/'){
+      return MaterialPage(child: HomePage());
+    }
+
+    if(route.path.startsWith('/color/detail')){
+      String? selectedColor = route.queryParameters['color'];
+
+      if (selectedColor != null) {
+        Color color = Color(int.parse(selectedColor, radix: 16));
+        return MaterialPage(key: _colorDetailKey, child: StlColorPage(color: color));
+      }
+    }
+
+    if (route.path == '/color/add') {
+     return MaterialPage(key: _addColorKey, child: ColorAddPage());
+    }
+
+    return null;
+  }
+
+  @override
+  Future<void> setNewRoutePath(ParsedRoute configuration) async {
+    print("===setNewRoutePath===${configuration}=================");
+    if(configuration!=_routes.last){
+      _routes.add(configuration);
+    }
+  }
+
+  bool _onPagePop(Route route, result) {
+    RouteSettings settings = route.settings;
+    if(settings is Page){
+      if(settings.key==_addColorKey){
+        _routes.removeLast();
+        notifyListeners();
+      }
+      if(settings.key==_colorDetailKey){
+        _routes.removeLast();
+        notifyListeners();
+      }
+    }
+    return route.didPop(result);
+  }
+
+
+}

lib/13/01___/route/route_state.dart

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+// Copyright 2021, the Flutter project authors. Please see the AUTHORS file
+// for details. 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/widgets.dart';
+
+import 'parsed_route.dart';
+import 'parser.dart';
+
+/// The current route state. To change the current route, call obtain the state
+/// using `RouteStateScope.of(context)` and call `go()`:
+///
+/// ```
+/// RouteStateScope.of(context).go('/book/2');
+/// ```
+class RouteState extends ChangeNotifier {
+  final AppRouteParser _parser;
+  ParsedRoute _route;
+
+  RouteState(this._parser,{String initial=''}) : _route = ParsedRoute(initial,{});
+
+  ParsedRoute get route => _route;
+
+  set route(ParsedRoute route) {
+    // Don't notify listeners if the path hasn't changed.
+    if (_route == route) return;
+
+    _route = route;
+    notifyListeners();
+  }
+
+  Future<void> go(String route) async {
+    this.route = await _parser
+        .parseRouteInformation(RouteInformation(uri: Uri.parse(route)));
+  }
+}
+
+// /// Provides the current [RouteState] to descendant widgets in the tree.
+// class RouteStateScope extends InheritedNotifier<RouteState> {
+//   const RouteStateScope({
+//     required super.notifier,
+//     required super.child,
+//     super.key,
+//   });
+//
+//   static RouteState of(BuildContext context) =>
+//       context.dependOnInheritedWidgetOfExactType<RouteStateScope>()!.notifier!;
+// }