Salut
je suis entrain de developper une application qui permet de se connecter à une base de données
voila le code php
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<?php
mysql_connect("localhost","root","");
mysql_select_db("Deal");
$sql=mysql_query("select * from CITY ");
$output=array();
 
while($row=mysql_fetch_assoc($sql))
$output[]=$row;
print(json_encode($output));
mysql_close();
?>
je veut afficher les données génerer par Json dans l'emulateur de Android
j'ai mit le code suivant :
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package com.base.mysql;
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.JSONException;
import org.json.JSONObject;
 
import android.app.Activity;
import android.net.ParseException;
import android.os.Bundle;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
public class Main extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        InputStream is = null;
        String result="";
 
 
        ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
        nameValuePairs.add(new BasicNameValuePair("year","1980"));
 
      //http post
      try{
           HttpClient httpclient = new DefaultHttpClient();
           HttpPost httppost = new HttpPost("http://127.0.0.1:8888/bd/city.php");
           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());
          }
      //convert response to string
      try{
            BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
            StringBuilder  sb = new StringBuilder();
             sb.append(reader.readLine() + "\n");
             String line="0";
             while ((line = reader.readLine()) != null) {
                            sb.append(line + "\n");
              }
              is.close();
              result=sb.toString();
 
              }catch(Exception e){
                    Log.e("log_tag", "Error converting result "+e.toString());
              }
 
      //paring data
      int ct_id;
      String ct_name;
      try{
    	  JSONArray jArray = new JSONArray(result);
            JSONObject json_data=null;
            for(int i=0;i<jArray.length();i++){
                   json_data = jArray.getJSONObject(i);
                   ct_id=json_data.getInt("CITY_ID");
               	  Toast.makeText(getBaseContext(), ""+ct_id ,Toast.LENGTH_LONG).show();
 
                   ct_name=json_data.getString("CITY_NAME");
 
               }
            }
            catch(JSONException e1){
          	  Toast.makeText(getBaseContext(), "No City Found" ,Toast.LENGTH_LONG).show();
            } catch (ParseException e1) {
      			e1.printStackTrace();
      	}
         // }
    }
}
mais rien afficher
Merci