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lib/13/02/store/app_state.dart

@@ -0,0 +1,32 @@
+
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/material.dart';
+
+class AppState extends ChangeNotifier{
+  final List<Color> colors;
+
+  AppState({required this.colors,});
+
+  AppState.initial():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,
+  ];
+
+  void addColor(Color color){
+    colors.add(color);
+    notifyListeners();
+  }
+
+}
+
+/// Provides the current [RouteState] to descendant widgets in the tree.
+class AppStateScope extends InheritedNotifier<AppState> {
+  const AppStateScope({super.key, required super.child,  required super.notifier,});
+
+
+
+  static AppState of(BuildContext context) =>
+      context.dependOnInheritedWidgetOfExactType<AppStateScope>()!.notifier!;
+}