change date format in notification screen

lib/screens/notification_screen.dart

@@ -1,5 +1,4 @@
 import 'package:cheminova/models/notification_list_response.dart';
-import 'package:cheminova/models/rejected_applicaton_response.dart';
 import 'package:cheminova/provider/notification_provider.dart';
 import 'package:flutter/material.dart';
 import 'package:cheminova/widgets/common_background.dart';
@@ -8,7 +7,6 @@ import 'package:cheminova/widgets/common_app_bar.dart';
 import 'package:cheminova/widgets/common_elevated_button.dart';
 import 'package:intl/intl.dart';
 import 'package:provider/provider.dart';
-import '../provider/rejected_provider.dart';
 
 class NotificationScreen extends StatefulWidget {
   const NotificationScreen({super.key});
@@ -59,7 +57,8 @@ class NotificationScreenState extends State<NotificationScreen> {
                 : MyListView(value: value),
           ),
         ),
-        ));
+      ),
+    );
   }
 }
 
@@ -87,13 +86,40 @@ class MyListView extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    // Group notifications by date
+    Map<String, List<Notifications>> groupedNotifications = {};
+
+    for (var notification in value.notificationList) {
+      String date = DateFormat("dd MMM yyyy").format(DateTime.parse(notification.createdAt ?? ''));
+      if (!groupedNotifications.containsKey(date)) {
+        groupedNotifications[date] = [];
+      }
+      groupedNotifications[date]!.add(notification);
+    }
+
     return ListView.builder(
       padding: const EdgeInsets.only(top: 15),
-      itemCount: value.notificationList.length,
+      itemCount: groupedNotifications.length,
       itemBuilder: (context, index) {
-        Notifications item = value.notificationList[index];
+        String date = groupedNotifications.keys.elementAt(index);
+        List<Notifications> notificationsForDate = groupedNotifications[date]!;
+
         return Padding(
           padding: const EdgeInsets.only(bottom: 10, left: 10, right: 10),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              // Display the date once
+              Padding(
+                padding: const EdgeInsets.only(bottom: 8.0),
+                child: Text(
+                  date,
+                  style: const TextStyle(fontSize: 16, fontWeight: FontWeight.bold),
+                ),
+              ),
+              // Display notifications for the date
+              ...notificationsForDate.map((item) => Padding(
+                padding: const EdgeInsets.only(bottom: 10),
                 child: ExpansionTile(
                   collapsedBackgroundColor: Colors.white,
                   backgroundColor: Colors.white,
@@ -102,14 +128,10 @@ class MyListView extends StatelessWidget {
                     item.title ?? '',
                     style: const TextStyle(fontSize: 17, fontWeight: FontWeight.w500),
                   ),
-            subtitle: Column(
+                  subtitle: Text(item.msg ?? ''),
-              crossAxisAlignment: CrossAxisAlignment.start,
-              children: [
-                Text((DateFormat("dd/MMM/yyyy")
-                    .format(DateTime.parse(item.createdAt ?? '')))),
-                Text(item.msg ?? ''),
-              ],
                 ),
+              )),
+            ],
           ),
         );
       },