Se connecter a une base de donnée externe

package com.xolider.tof;

import android.app.ProgressDialog;
import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RelativeLayout;
import android.widget.TextView;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;


public class MainActivity extends ActionBarActivity implements View.OnClickListener {

    EditText editText;
    EditText pass;
    Button button;
    RelativeLayout layout;
    TextView text;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        layout = (RelativeLayout)RelativeLayout.inflate(this, R.layout.activity_main, null);
        editText = (EditText)layout.findViewById(R.id.editText);
        editText.setHint("email");
        pass = (EditText)layout.findViewById(R.id.editText2);
        pass.setHint("password");
        button = (Button)layout.findViewById(R.id.button);
        button.setOnClickListener(this);
        text = (TextView)layout.findViewById(R.id.textView);
        setContentView(layout);
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.button:
                String myurl = "http://192.168.1.199/android/connect.php";
                InputStream is;
                String result;
                String re = null;
                try {
                    HttpClient client = new DefaultHttpClient();
                    HttpPost httpPost = new HttpPost(myurl);
                    HttpResponse response = client.execute(httpPost);
                    HttpEntity entity = response.getEntity();
                    is = entity.getContent();
                    BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
                    StringBuilder sb = new StringBuilder();
                    String line;
                    while((line = reader.readLine()) != null) {
                        sb.append(line + "\n");
                    }
                    is.close();
                    result = sb.toString();
                    JSONArray array = new JSONArray(result);
                    for(int i = 0; i < array.length(); i++) {
                        JSONObject object = array.getJSONObject(i);
                        if(object.getString("email").equals(editText.getText().toString())) {
                            if(object.getString("pass").equals(pass.getText().toString())) {
                                Intent intent = new Intent(MainActivity.this, MainActivity2Activity.class);
                                startActivity(intent);
                                this.finish();
                            }
                            else {
                                Log.e("erreur pass", "erreur de password");
                                text.setText("erreur pass");
                            }
                        }
                        else {
                            Log.e("erreur email", "erreur email");
                            text.setText("erreur email");
                        }
                    }
                }
                catch (Exception e) {
                    Log.i("Erreur !", e.getStackTrace().toString());
                }
                break;
        }
    }
}