Configure routes in example project.

example/lib/routes/app_routes.dart

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+import 'routes.dart';
+import 'package:flutter/material.dart';
+import '../choose_user_page.dart';
+import '../advanced_options_page.dart';
+import 'package:stream_chat_flutter/stream_chat_flutter.dart';
+import '../main.dart';
+import '../group_chat_details_screen.dart';
+import '../new_group_chat_screen.dart';
+import '../new_chat_screen.dart';
+
+class AppRoutes {
+  /// Add entry for new route here
+  static Route<dynamic> generateRoute(RouteSettings settings) {
+    final args = settings.arguments;
+    switch (settings.name) {
+      case Routes.CHANNEL_LIST:
+        return MaterialPageRoute(
+            settings: const RouteSettings(name: Routes.CHANNEL_LIST),
+            builder: (_) {
+              return ChannelListPage();
+            });
+      case Routes.CHOOSE_USER:
+        return MaterialPageRoute(
+            settings: const RouteSettings(name: Routes.CHOOSE_USER),
+            builder: (_) {
+              return ChooseUserPage();
+            });
+      case Routes.ADVANCED_OPTIONS:
+        return MaterialPageRoute(
+          settings: const RouteSettings(name: Routes.ADVANCED_OPTIONS),
+          builder: (_) => AdvancedOptionsPage(),
+        );
+      case Routes.CHANNEL_PAGE:
+        return MaterialPageRoute(
+            settings: const RouteSettings(name: Routes.CHANNEL_PAGE),
+            builder: (_) {
+              return StreamChannel(
+                channel: args as Channel,
+                child: ChannelPage(),
+              );
+            });
+      case Routes.NEW_CHAT:
+        return MaterialPageRoute(
+            settings: const RouteSettings(name: Routes.NEW_CHAT),
+            builder: (_) {
+              return NewChatScreen();
+            });
+      case Routes.NEW_GROUP_CHAT:
+        return MaterialPageRoute(
+            settings: const RouteSettings(name: Routes.NEW_GROUP_CHAT),
+            builder: (_) {
+              return NewGroupChatScreen();
+            });
+      case Routes.NEW_GROUP_CHAT_DETAILS:
+        return MaterialPageRoute(
+            settings: const RouteSettings(name: Routes.NEW_GROUP_CHAT_DETAILS),
+            builder: (_) {
+              return GroupChatDetailsScreen(
+                selectedUsers: args,
+              );
+            });
+    }
+  }
+}

example/lib/routes/routes.dart

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+/// Define all the route names here
+class Routes {
+  static const String CHANNEL_LIST = '/channel_list';
+  static const String CHOOSE_USER = '/choose_user';
+  static const String ADVANCED_OPTIONS = '/advance_options';
+  static const String CHANNEL_PAGE = '/channel_page';
+  static const String NEW_CHAT = '/new_chat';
+  static const String NEW_GROUP_CHAT = '/new_group_chat';
+  static const String NEW_GROUP_CHAT_DETAILS = '/new_group_chat_details';
+}