package com.android;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnKeyListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
public class Inicio extends Activity {
EditText user;
EditText pass;
Button validar;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login);
user = (EditText) findViewById(R.id.txtUsuario);
pass = (EditText) findViewById(R.id.txtPass);
validar = (Button) findViewById(R.id.btnValidar);
validar.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
ArrayList parametros = new ArrayList();
parametros.add("Usuario");
parametros.add(user.getText().toString());
parametros.add("Contrasena");
parametros.add(pass.getText().toString());
// Llamada a Servidor Web PHP
try {
Post post = new Post();
JSONArray datos = post.getServerData(parametros,
"http://95.234.67.44/login.php");
// No se puede poner localhost, carga la consola de Windows
// y escribe ipconfig/all para ver tu IP
if (datos != null && datos.length() > 0) {
JSONObject json_data = datos.getJSONObject(0);
int numRegistrados = json_data.getInt("ID_USUARIO");
if (numRegistrados > 0) {
Toast.makeText(getBaseContext(),
"Usuario correcto. ", Toast.LENGTH_SHORT)
.show();
}
} else {
Toast.makeText(getBaseContext(),
"Usuario incorrecto. ", Toast.LENGTH_SHORT)
.show();
}
} catch (Exception e) {
Toast.makeText(getBaseContext(),
"Error al conectar con el servidor. ",
Toast.LENGTH_SHORT).show();
}
// FIN Llamada a Servidor Web PHP
}
});
}
class Post {
private InputStream is = null;
private String respuesta = "";
private void conectaPost(ArrayList parametros, String URL) {
ArrayList nameValuePairs;
try {
HttpClient httpclient = new DefaultHttpClient();
HttpPost httppost = new HttpPost(URL);
nameValuePairs = new ArrayList();
if (parametros != null) {
for (int i = 0; i < parametros.size() - 1; i += 2) {
nameValuePairs.add(new BasicNameValuePair((String)parametros.get(i),(String)parametros.get(i + 1)));
}
httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
}
HttpResponse response = httpclient.execute(httppost);
HttpEntity entity = response.getEntity();
is = entity.getContent();
} catch (Exception e) {
Log.e("log_tag", "Error in http connection " + e.toString());
} finally {
}
}
private void getRespuestaPost() {
try {
BufferedReader reader = new BufferedReader(
new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
is.close();
respuesta = sb.toString();
Log.e("log_tag", "Cadena JSon " + respuesta);
} catch (Exception e) {
Log.e("log_tag", "Error converting result " + e.toString());
}
}
@SuppressWarnings("finally")
private JSONArray getJsonArray() {
JSONArray jArray = null;
try {
jArray = new JSONArray(respuesta);
} catch (Exception e) {
} finally {
return jArray;
}
}
public JSONArray getServerData(ArrayList parametros, String URL) {
conectaPost(parametros, URL);
if (is != null) {
getRespuestaPost();
}
if (respuesta != null && respuesta.trim() != "") {
return getJsonArray();
} else {
return null;
}
}
}
}
