dbExtension.java

package none.treego;


import android.content.Context;
import android.os.AsyncTask;
import android.renderscript.ScriptGroup;
import android.widget.Toast;

import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.ProtocolException;
import java.net.URL;
import java.net.URLEncoder;

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

    Context ctx;
    dbExtension(Context ctx) {
        this.ctx = ctx;
    }

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }

    @Override
    protected String doInBackground(String... params) {
        String DBLink = "http://localhost/Calculate.php";
        String Action = params[0];
        String Num1 = params[1];
        String Num2 = params[2];
        String Result = params[3];
        if (Action.equals("Calculate")) {
            try {
                URL url = new URL(DBLink);
                HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                conn.setRequestMethod("POST");
                conn.setDoOutput(true);
                OutputStream OS = conn.getOutputStream();
                BufferedWriter bWriter = new BufferedWriter(new OutputStreamWriter(OS, "UTF-8"));
                String data =
                        URLEncoder.encode("Num1", "UTF-8") + "=" + URLEncoder.encode(Num1, "UTF-8") + "&" +
                                URLEncoder.encode("Num2", "UTF-8") + "=" + URLEncoder.encode(Num2, "UTF-8") + "&" +
                                URLEncoder.encode("Result", "UTF-8") + "=" + URLEncoder.encode(Result, "UTF-8");
                bWriter.write(data);
                bWriter.flush();
                bWriter.close();
                OS.close();
                InputStream IS = conn.getInputStream();
                IS.close();
                return "Calculado com sucesso! "  + Num1 + " + " + Num2 + " = " + Result;
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return null;
    }

    @Override
    protected void onProgressUpdate(Void... values) {
        super.onProgressUpdate(values);
    }

    @Override
    protected void onPostExecute(String result) {
        Toast.makeText(ctx, result, Toast.LENGTH_LONG).show();
    }
}