Two or more Foreground Notification with Progress is replacing each other while updating its progress

Question

I have a service that will run a upload task in foreground then showing a progress in the notification. Since a user may upload multiple times with different id request then the

Answer 1

At last I figure it out how to do it. First I needed to run it inside a onCreate with a little delay.

 @Override
public void onCreate (){
    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
                startForeground(requestCode, getMyActivityNotification("",completedParts,totalSize));
        }
    },500);

}

Then create a notification provider method.

//Notification provider
private Notification getMyActivityNotification(String caption, long completedUnits, long totalUnits){

    int percentComplete = 0;
    if (totalUnits > 0) {
        percentComplete = (int) (100 * completedUnits / totalUnits);
    }

    //Return the latest progress of task
    return new NotificationCompat.Builder(this, CHANNEL_ID_DEFAULT)
            .setSmallIcon(R.drawable.ic_file_upload_white_24dp)
            .setContentTitle(getString(R.string.app_name))
            .setContentText(caption)
            .setProgress(100, percentComplete, false)
            .setContentInfo(String.valueOf(percentComplete +"%"))
            .setOngoing(true)
            .setAutoCancel(false)
            .build();

}

Then updating notification progress should be separated from calling a foreground.

/**
 * Show notification with a progress bar.
 * Updating the progress happens here
 */
protected void showProgressNotification(String caption, long completedUnits, long totalUnits, int code) {

    createDefaultChannel();
    mCaption = caption;
    requestCode = code;
    completedParts = completedUnits;
    totalSize = totalUnits;

    NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    if (mNotificationManager != null) {
        //Update the notification bar progress
        mNotificationManager.notify(requestCode,  getMyActivityNotification(caption,completedUnits,totalUnits));
    }
}