I/O

                    InputStream uploadedStream = item.getInputStream();
                    OutputStream storableFile;
                    try
                    {
                        storableFile = new FileOutputStream(filesDir + "/" + username + fileExt);
//                      storableFile = new FileOutputStream(filesDir + AVT_DIR + "/" + username + fileExt);
                        byte[] fileBytes = new byte[BUF_SIZE];
                        while (uploadedStream.read(fileBytes) != -1)
                            storableFile.write(fileBytes);
                        uploadedStream.close();
                        storableFile.close();
                        success = true;
                    }