public class NotificationItem extends BaseNotificationItem {

        PendingIntent pendingIntent;
        NotificationCompat.Builder builder;
        private NotificationManager notificationManager;

        private NotificationItem(int id, String title, String desc) {
            super(id, title, desc);
            notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
            Intent cancelIntent = new Intent(getContext(), CancelReceiver.class);
            Intent pauseIntent = new Intent(getContext(), PauseReceiver.class);
            cancelIntent.putExtra("url", data.getVideo().getFiles().getOffline().getSd().getFile());
            cancelIntent.putExtra("id", getId());
            pauseIntent.putExtra("id", getId());

            PendingIntent pendingCancel = PendingIntent.getBroadcast(getContext(), 0,
                    cancelIntent, PendingIntent.FLAG_UPDATE_CURRENT);
            PendingIntent pendingPause = PendingIntent.getBroadcast(getContext(), 0,
                    pauseIntent, PendingIntent.FLAG_UPDATE_CURRENT);

            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
                NotificationChannel notificationChannel = new NotificationChannel("channelid", "Notification", NotificationManager.IMPORTANCE_LOW);

                notificationChannel.setDescription("Notification");
                notificationChannel.setSound(null, null);
                notificationChannel.enableLights(false);
                notificationChannel.setLightColor(Color.BLUE);
                notificationChannel.enableVibration(false);
                notificationManager.createNotificationChannel(notificationChannel);
            }

            builder = new NotificationCompat.
                    Builder(FileDownloadHelper.getAppContext(), "channelid")
                    .setDefaults(Notification.DEFAULT_LIGHTS)
                    .setOngoing(true)
                    .setPriority(NotificationCompat.PRIORITY_MIN)
                    .setContentTitle(getTitle())
                    .setContentText(desc)
                    .addAction(R.drawable.exo_controls_play, "PAUSE", pendingPause)
                    .addAction(R.drawable.exo_controls_play, "CANCEL", pendingCancel)
                    .setContentIntent(pendingIntent)
                    .setSmallIcon(R.drawable.exo_controls_play);

        }

        @Override
        public void show(boolean statusChanged, int status, boolean isShowProgress) {

            String desc = getDesc();
            switch (status) {
                case FileDownloadStatus.pending:
                    desc += " pending";
                    Log.e("status", "FileDownloadStatus.pending");
                    break;
                case FileDownloadStatus.started:
                    desc += " started";
                    Log.e("status", "FileDownloadStatus.started");
                    break;
                case FileDownloadStatus.progress:
                    desc += " progress";
                    Log.e("status", "FileDownloadStatus.progress");
                    break;
                case FileDownloadStatus.retry:
                    desc += " retry";
                    Log.e("status", "FileDownloadStatus.retry");
                    break;
                case FileDownloadStatus.error:
                    desc += " error";
                    Log.e("status", "FileDownloadStatus.error");
                    break;
                case FileDownloadStatus.paused:
                    desc += " paused";
                    Log.e("status", "FileDownloadStatus.paused");
                    break;
                case FileDownloadStatus.completed:
                    desc += " completed";
                    Log.e("status", "FileDownloadStatus.completed");
                    break;
                case FileDownloadStatus.warn:
                    desc += " warn";
                    Log.e("status", "FileDownloadStatus.warn");
                    break;
            }

            builder.setContentTitle(getTitle())
                    .setContentText(desc);


            if (statusChanged) {
                builder.setTicker(desc);
            }

            builder.setProgress(getTotal(), getSofar(), !isShowProgress);
            Log.e("tagg", ""+getSofar());
            fileDownloader.startForeground(data.getId(), builder.build());
        }
    }