public static void CancelAll()
 {
     char[]   separator = new char[] { ';' };
     string[] strArray  = PlayerPrefs.GetString("area730_notification_ids").Split(separator);
     for (int i = 0; i < (strArray.Length - 1); i++)
     {
         AndroidNotifications.cancelNotification(Convert.ToInt32(strArray[i]));
     }
     PlayerPrefs.DeleteKey("area730_notification_ids");
 }
        /// <summary>
        /// Cancels all schedules notifications tracked with NotificationTracker.TrackId(int id) method. By default all notifications are tracked
        /// </summary>
        public static void CancelAll()
        {
            string keys = PlayerPrefs.GetString(IDS_KEY);

            string[] ids = keys.Split(';');

            for (int i = 0; i < ids.Length - 1; ++i)
            {
                int id = System.Convert.ToInt32(ids[i]);
                AndroidNotifications.cancelNotification(id);
            }

            PlayerPrefs.DeleteKey(IDS_KEY);
        }