Android - Conexión con base de datos mysql

formacion.example;

import java.io.BufferedReader;

import java.io.InputStreamReader;

import java.net.HttpURLConnection;

import java.net.URL;

import java.net.URLEncoder;

import java.util.concurrent.ExecutionException;

import org.json.JSONException;

import org.json.JSONObject;

import android.content.Context;

import android.os.AsyncTask;

import android.widget.Toast;

import android.widget.EditText;

public class Control extends AsyncTask<String, Void, String>  {

	private Context context;

    public Control(Context context) {

        this.context = context;

    }

    protected void onPreExecute() {

    }

    @Override

    protected String doInBackground(String... arg0) {

		// TODO Auto-generated method stub

		String pn = (String)arg0[0];

        String pa = (String)arg0[1];

        String ptutor = (String)arg0[2];

        String pdni = (String)arg0[3];

        String pdir = (String)arg0[4];

        String ptel = (String)arg0[5];

        String link;

        String data;

        BufferedReader bufferedReader;

        String result;

        try {

            data = "?nombre" + URLEncoder.encode(pn, "UTF-8");

            data += "&apellido=" + URLEncoder.encode(pa, "UTF-8");

            data += "&tutor=" + URLEncoder.encode(ptutor, "UTF-8");

            data += "&dni=" + URLEncoder.encode(pdni, "UTF-8");

            data += "&dir=" + URLEncoder.encode(pdir, "UTF-8");

            data += "&tel=" + URLEncoder.encode(ptel, "UTF-8");

            link = "http://127.0.0.1/PutData.php?nombre="+data;

            //+pn+"&apellido="+pa+"&tutor="+ptutor+"&dni="+pdni+"&dir="+pdir+"&tel="+ptel;

            URL url = new URL(link);

            HttpURLConnection con = (HttpURLConnection) url.openConnection();

            bufferedReader = new BufferedReader(new InputStreamReader(con.getInputStream()));

            result = bufferedReader.readLine();

            return result;

        } catch (Exception e) {

            return new String("Exception: " + e.getMessage());

        }

	}

    @Override

	  protected void onPostExecute(String result) {

	        String jsonStr = result;

	        if (jsonStr != null) {

	            try {

	                JSONObject jsonObj = new JSONObject(jsonStr);

	                String query_result = jsonObj.getString("query_result");

	                if (query_result.equals("SUCCESS")) {

	                    Toast.makeText(context, "Data inserted successfully. Signup successfull.", Toast.LENGTH_SHORT).show();

	                } else if (query_result.equals("FAILURE")) {

	                    Toast.makeText(context, "Data could not be inserted. Signup failed.", Toast.LENGTH_SHORT).show();

	                } else {

	                    Toast.makeText(context, "Couldn't connect to remote database.", Toast.LENGTH_SHORT).show();

	                }

	            } catch (JSONException e) {

	                e.printStackTrace();

	                Toast.makeText(context, "Error parsing JSON data.", Toast.LENGTH_SHORT).show();

	            }

	        } else {

	            Toast.makeText(context, "Couldn't get any JSON data.", Toast.LENGTH_SHORT).show();

	        }

	    }

}