Implemented structure for push Notifications

lib/notification/notificationService.dart

@@ -0,0 +1,75 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_local_notifications/flutter_local_notifications.dart';
+import 'package:fluttertoast/fluttertoast.dart';
+import 'package:provider/provider.dart';
+
+import '../model/chatList/chatListProps.dart';
+import '../model/message/messageProps.dart';
+
+class NotificationService {
+  static final NotificationService _instance = NotificationService._internal();
+
+  factory NotificationService() {
+    return _instance;
+  }
+
+  NotificationService._internal();
+
+  FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
+
+  Future<void> initializeNotifications() async {
+    const AndroidInitializationSettings androidSettings = AndroidInitializationSettings(
+        '@mipmap/ic_launcher'
+    );
+
+    final DarwinInitializationSettings iosSettings = DarwinInitializationSettings(
+      onDidReceiveLocalNotification: (id, title, body, payload) {
+        // TODO Navigate to Talk section (This runs when an Notification is tapped)
+      },
+    );
+
+
+    final InitializationSettings initializationSettings = InitializationSettings(
+      android: androidSettings,
+      iOS: iosSettings,
+    );
+
+    await flutterLocalNotificationsPlugin.initialize(
+      initializationSettings,
+    );
+  }
+
+  Future<void> showNotification({required String title, required String body}) async {
+    const AndroidNotificationDetails androidPlatformChannelSpecifics =
+    AndroidNotificationDetails(
+      'your_channel_id',
+      'Your Channel Name',
+      importance: Importance.defaultImportance,
+      priority: Priority.defaultPriority,
+      ticker: 'ticker',
+    );
+
+    const NotificationDetails platformChannelSpecifics = NotificationDetails(android: androidPlatformChannelSpecifics);
+
+    await flutterLocalNotificationsPlugin.show(
+      0,
+      title,
+      body,
+      platformChannelSpecifics,
+    );
+  }
+
+  void showToast({required String message, required BuildContext context, ToastGravity gravity = ToastGravity.BOTTOM}) {
+    Fluttertoast.showToast(
+      msg: message,
+      gravity: gravity,
+      toastLength: Toast.LENGTH_SHORT,
+      backgroundColor: Theme.of(context).primaryColor,
+      textColor: Colors.white,
+      fontSize: 13.0,
+    );
+
+    Provider.of<ChatListProps>(context, listen: false).run(renew: true);
+    Provider.of<MessageProps>(context, listen: false).run(renew: true);
+  }
+}