Sorry for the question, seems to be easy... I think that something wrong on json parse or php response (i do not know yet).
I spent the day searching here on the site and some tutorials. Already evolved enough, but still missing a little.
The problem is: I am trying to get a result from a SELECT COUNT... and when I see the result on my device screen, it is look like json object
[{"count":"1"}] .
Java code is below:
package com.clubee.vote;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ImageButton;
import android.widget.RelativeLayout;
import android.widget.TextView;
import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.List;
public class ResultadoFalho extends Activity {
private static final String TAG_SUCCESS = "success";
//Acessa contador de votos
private static String url_count_votos = "http://dev.clubee.com.br/dbvote/ContaVoto.php";
JSONParser jsonParser = new JSONParser();
private ProgressDialog pDialog;
public String tipoVoto="SIM";
TextView tv;
String contador;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.resultadofalho);
RelativeLayout layout = new RelativeLayout(this);
Bitmap bitmapTop = BitmapFactory.decodeResource(getResources(),R.drawable.sharing);
ImageButton sharingComp = new ImageButton(this);
sharingComp.setImageBitmap(bitmapTop);
tv = (TextView)findViewById(R.id.resultadoSim);
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.FILL_PARENT,
RelativeLayout.LayoutParams.WRAP_CONTENT);
lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
sharingComp.setLayoutParams(lp);
layout.addView(sharingComp);
this.addContentView(layout,lp);
sharingComp.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
shareIt();
}
});
new retornacontador().execute();
}
private void shareIt() {
Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
sharingIntent.setType("text/plain");
String shareBody = "Eu votei! E você, já opinou sobre a atual gestão da presidente do Brasil?";
sharingIntent.putExtra(android.content.Intent.EXTRA_SUBJECT, "Vote, Opine, Compartilhe");
sharingIntent.putExtra(android.content.Intent.EXTRA_TEXT, shareBody);
startActivity(Intent.createChooser(sharingIntent, "Compartilhar"));
}
class retornacontador extends AsyncTask<String, String, String> {
/**
* Antes de inserir e iniciar as açoes de background essa thread mostra o progresso
* */
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(ResultadoFalho.this);
pDialog.setMessage("Buscando Votos..");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("tipoVoto", tipoVoto));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_count_votos, "GET", params);
// check log cat from response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
contador = json.getString("voto");
} else {
// Voto não registrado
}
} catch (JSONException e) {
e.printStackTrace();
}
return contador;
}
protected void onPostExecute(String file_url) {
tv.setText(contador);
pDialog.dismiss();
}
}
}
And PHP is:
<?php
// array for JSON response
$response = array();
// include db connect class
require_once 'db_connect.php';
// connecting to db
$db = new DB_CONNECT();
// check for post data
if (isset($_GET["tipoVoto"])) {
$tipoVoto = $_GET['tipoVoto'];
// get a product from products table
$result = mysql_query("SELECT COUNT(*) as count FROM tbVotacao WHERE tipoVoto = '$tipoVoto'");
$result = mysql_fetch_array($result);
$voto = array();
$voto["count"] = $result["count"];
// success
$response["success"] = 1;
// user node
$response["voto"] = array();
array_push($response["voto"], $voto);
// echoing JSON response
echo json_encode($response);
}
?>
Tks in advance!!
The JSON object created by the PHP code will look like this: {success:1,voto:[{count:1}]}
. You can change it to something like this:
$result = mysql_fetch_array($result);
$response["success"] = 1;
$response["voto"] = $result["count"];
echo json_encode($response);
or change the Java code to read the voto
element as a JSON array and get the count
from that array.
contador = json.getJSONArray("voto").getJSONObject(0).getString("count");
Also, in the onPostExecute(...)
method you should get the result of the doInBackground(...)
method like this:
protected void onPostExecute(String result) {
tv.setText(result);
pDialog.dismiss();
}
You should consider using a prepared statement to perform the database query because as it is now your PHP function is vulnerable to SQL Injection
JSONObject json = jsonParser.makeHttpRequest(url_count_votos, "GET", params);
// check log cat from response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
JSONArray votoArray=json.getJSONArray("voto");
String contador = votoArray.getJSONObject(0).getString("count");
} else {
// Voto não registrado
}
Thanks a lot, Shanmugapriyan and Titus.
My code was a little different, but with your help, solved this problem.
protected String doInBackground(String... args) {
// Building Parameters
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("tipoVoto", tipoVoto));
// getting JSON Object
// Note that create product url accepts POST method
JSONObject json = jsonParser.makeHttpRequest(url_count_votos, "GET", params);
// check log cat from response
Log.d("Create Response", json.toString());
// check for success tag
try {
int success = json.getInt(TAG_SUCCESS);
if (success == 1) {
JSONArray votoArray=json.getJSONArray("voto");
String contaVotos = votoArray.getJSONObject(0).getString("count");
contador = contaVotos;
} else {
// Voto não registrado
}
} catch (JSONException e) {
e.printStackTrace();
}
return contador;
}
protected void onPostExecute(String file_url) {
tv.setText(contador);
pDialog.dismiss();
}
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