private class FTPUploader extends AsyncTask<URL, Integer, Long> {


    protected Long doInBackground(URL... urls) {
        String data = "/pathimage/filename.jpg";
        File sourceFile = new File(data);
        FTPClient con = new FTPClient();
        try {

            con.connect("ftp.ftpServer.it", 21);

            if (con.login("user", "password")) {
                con.setFileType(FTP.BINARY_FILE_TYPE);
                con.enterLocalPassiveMode();


                if (sourceFile.exists()) {
                    InputStream input = new FileInputStream(sourceFile);


                    boolean result = con.storeFile("/folder/newfilename.jpg", input);
                    input.close();
                    if (result) {
                        System.out.println(result);
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        try {
            if (sourceFile.exists()) {
                con.logout();
                con.disconnect();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        return null;
    }
}