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 /**

     * send it to notification bar

     * This can be override by subclass to provide customer implementation

     * @param message

     */

    protected void sendNotification(EMMessage message, boolean isForeground, boolean numIncrease) {

        String username = message.getFrom();

        try {

            String notifyText = username + " ";

            switch (message.getType()) {

                case TXT:

                    notifyText += msgs[0];

                    break;

                case IMAGE:

                    notifyText += msgs[1];

                    break;

                case VOICE:



                    notifyText += msgs[2];

                    break;

                case LOCATION:

                    notifyText += msgs[3];

                    break;

                case VIDEO:

                    notifyText += msgs[4];

                    break;

                case FILE:

                    notifyText += msgs[5];

                    break;

            }



            PackageManager packageManager = appContext.getPackageManager();

            String appname = (String) packageManager.getApplicationLabel(appContext.getApplicationInfo());



            // notification title

            String contentTitle = appname;

            if (notificationInfoProvider != null) {

                String customNotifyText = notificationInfoProvider.getDisplayedText(message);

                String customCotentTitle = notificationInfoProvider.getTitle(message);

                if (customNotifyText != null) {

                    notifyText = customNotifyText;

                }



                if (customCotentTitle != null) {

                    contentTitle = customCotentTitle;

                }

            }



            // create and send notificaiton

            NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(appContext)

                    .setSmallIcon(appContext.getApplicationInfo().icon)

                    .setWhen(System.currentTimeMillis())

                    .setAutoCancel(true);



            Intent msgIntent = appContext.getPackageManager().getLaunchIntentForPackage(packageName);

            if (notificationInfoProvider != null) {

                msgIntent = notificationInfoProvider.getLaunchIntent(message);

            }



            PendingIntent pendingIntent = PendingIntent.getActivity(appContext, notifyID, msgIntent, PendingIntent.FLAG_UPDATE_CURRENT);



            if (numIncrease) {

                // prepare latest event info section

                if (!isForeground) {

                    notificationNum++;

                    fromUsers.add(message.getFrom());

                }

            }



            int fromUsersNum = fromUsers.size();

            String summaryBody = msgs[6].replaceFirst("%1", Integer.toString(fromUsersNum)).replaceFirst("%2", Integer.toString(notificationNum));



            if (notificationInfoProvider != null) {

                // lastest text

                String customSummaryBody = notificationInfoProvider.getLatestText(message, fromUsersNum, notificationNum);

                if (customSummaryBody != null) {

                    summaryBody = customSummaryBody;

                }



                // small icon

                int smallIcon = notificationInfoProvider.getSmallIcon(message);

                if (smallIcon != 0) {

                    mBuilder.setSmallIcon(smallIcon);

                }

            }



            mBuilder.setContentTitle(contentTitle);

            mBuilder.setTicker(notifyText);

            mBuilder.setContentText(summaryBody);

            mBuilder.setContentIntent(pendingIntent);

            // mBuilder.setNumber(notificationNum);

            Notification notification = mBuilder.build();



            if (isForeground) {

                notificationManager.notify(foregroundNotifyID, notification);

                notificationManager.cancel(foregroundNotifyID);

            } else {

                notificationManager.notify(notifyID, notification);

            }



        } catch (Exception e) {

            e.printStackTrace();

        }

    }