showNotification method
Implementation
showNotification(Notif notif) async {
var android = new AndroidNotificationDetails(
CHANNEL_ID_NAME, CHANNEL_ID_NAME,
priority: Priority.high, importance: Importance.max,
);
var iOS = new IOSNotificationDetails();
var platform = new NotificationDetails(android: android, iOS: iOS);
await flutterLocalNotificationsPlugin.show(
random.nextInt(1000), notif.title, notif.content,
platform, payload: getNotifJson(notif)
);
}