String method = params[0];

    if (method.equals("registro")) {

        String nome = params[1];
        String sobre_nome = params[2];
        String login = params[3];
        String senha = params[4];

        try
        {

            URL url = new URL(reg_url);
            HttpURLConnection httpurlconnection = (HttpURLConnection)url.openConnection();
            httpurlconnection.setRequestMethod("POST");
            httpurlconnection.setDoOutput(true);

           // int codigo = httpurlconnection.getResponseCode();

            OutputStream OS = httpurlconnection.getOutputStream();
            BufferedWriter bufferedwriter = new BufferedWriter( new OutputStreamWriter(OS,"UTF-8"));
            String data = URLEncoder.encode("nome","UTF-8") + "=" + URLEncoder.encode(nome,"UTF-8")+"&"+
                    URLEncoder .encode("sobre_nome","UTF-8")+ "=" + URLEncoder.encode(sobre_nome,"UTF-8")+"&"+
                    URLEncoder .encode("login","UTF-8")+ "=" + URLEncoder.encode(login,"UTF-8")+"&"+
                    URLEncoder .encode("senha","UTF-8")+ "=" + URLEncoder.encode(senha,"UTF-8");
                bufferedwriter.write(data);
                bufferedwriter.flush();
                bufferedwriter.close();
                OS.close();
            **InputStream IS = httpurlconnection.getInputStream();**
            IS.close();
            httpurlconnection.disconnect();
            return "Resgistrado com sucesso!";