Probleme de récupération de mon JSON dans mon java

catch

e.getMessage()

onCreate()

is.toString()

is

is=null;

null

toString()

null

package com.example.tantine1.housefindpro;

import android.app.Activity;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;

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.JSONException;
import org.json.JSONObject;


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by Tantine1 on 4/28/2016.
 */
public class ajoutBail extends AppCompatActivity {

    //     définition de la variable de l'id du bayeur
    private String idBayeur;
    private Spinner spin_type, spin_ville;
    //private static final String URLV = "http://192.168.10.113:80/client/recupVille.php";

    private String data;
    List<String> list1 = new ArrayList<String>();
    //declation test
    InputStream is;
    String result = null;
    String line = null;
    HttpResponse response;
    BufferedReader reader;


    Spinner spinner_ville;


    void spinner_fn(String[] ville) {
        Log.i("AjoutBail", ville.toString());
        ArrayAdapter<String> dataAdapter1 = new ArrayAdapter<String>(ajoutBail.this, R.layout.support_simple_spinner_dropdown_item, ville);
        spinner_ville.setAdapter(dataAdapter1);
        spin_ville.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
                spin_ville.setSelection(position);
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {

            }
        });
    }

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ajoutbail);

        spinner_ville = (Spinner) findViewById(R.id.spin_ville);

        Toast.makeText(getApplicationContext(), "avant le try dans ajout ", Toast.LENGTH_LONG).show();


          NomDeLaVille nV= (NomDeLaVille) new NomDeLaVille(this).execute((Void[]) null);

        // Toast.makeText(getApplicationContext()," test de is "+is.toString(),Toast.LENGTH_LONG).show();

       /* try{

             reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);
            Log.e("CA","apres le reader");
            StringBuilder sb = new StringBuilder();
            Toast.makeText(this,"Result : "+result,Toast.LENGTH_LONG).show();
            while ((line = reader.readLine()) != null) {

                sb.append(line+"\n");
            }
            is.close();
           // result=sb.toString();
            if(result == null)
                Log.i("RESULT", "Result == null");
            else
                Log.i("RESULT", "Result n'est pas null, c'est donc un problème sur le PHP");
        }catch (Exception e){
            e.getMessage();
           Log.i("Invalid"," buffered error "+e+" Result : "+line   );
        }
        try{
            JSONArray JA = new JSONArray(result);
            JSONObject json=null;
            ville = new String[JA.length()];
            for(int i=0;i<JA.length();i++){
                json = JA.getJSONObject(i);
                ville[i]=json.getString("nom_ville");
            }
            Toast.makeText(getApplicationContext(),"sss",Toast.LENGTH_LONG).show();
          /*  for(int i=0;i<ville.length;i++){
                list1.add(ville[i]);
            }
            Toast.makeText(getApplicationContext(),"len",Toast.LENGTH_LONG).show();
            spinner_fn();
        }catch (Exception e){
            Log.e("Fail 3 ",e.toString());
        }*/


    }


}

package com.example.tantine1.housefindpro;

import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.Toast;

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;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by Tantine1 on 5/10/2016.
 */
class NomDeLaVille extends AsyncTask<Void, Void, Boolean>
{
    String[] ville;
    Spinner spin_vill;

    List<String> list1 = new ArrayList<String>();
    JSONObject json = null;

    protected ajoutBail activity ;

    public NomDeLaVille(AppCompatActivity activ)
    {

        this.activity = (ajoutBail) activ;
    }

    @Override
    protected Boolean doInBackground(Void... params)
    {
        //Ton code permettant l'appel à ton webservice ici
        HttpResponse response = null;
        InputStream is = null;
        String result = null;

        //Envoi de la requête HTTP, et réception de la réponse
        try
        {
          //  Log.i("Info","Connetion");
            HttpClient httpClient = new DefaultHttpClient();
            HttpPost httpPost = new HttpPost("http://192.168.1.2:80/client/recupVille.php");
            response = httpClient.execute(httpPost);

            HttpEntity entity = response.getEntity();
            is = entity.getContent();
        }
        catch (Exception e)
        {
            Log.i("CATCH 1","Erreur : " + e.getMessage());
            return false;
        }

        //Conversion en String (au format JSON)
        try
        {
            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();
            // Log.i("CATCH 1","Result : "+result.equals("nom_ville"));
        }
        catch (Exception e)
        {
            Log.i("CATCH 2","Erreur : " + e.getMessage());
            return false;
        }

        //Lecture de ton String (format JSON)
        try
        {
            JSONArray JA = new JSONArray(result);

            ville = new String[JA.length()];

            for(int i = 0; i < JA.length(); i++)
            {
                json = JA.getJSONObject(i);

                list1.add(json.getString("nom_ville"));
                ville[i] = json.getString("nom_ville");
                Log.i("Ville ",json.getString("nom_ville"));
            }



            // Toast.makeText(getApplicationContext(),"len",Toast.LENGTH_LONG).show();
            //  spinner_fn();
        }
        catch (Exception e)
        {
            Log.i("CATCH 3","Erreur : " + e.getMessage());
        }

        return true;
    }

    @Override
    protected void onPostExecute(Boolean result)
    {
        if(result)
        {
            Log.i("TAG",ville.toString());
            //Mis à jour de la liste

            activity.spinner_fn(ville);
        }
        else
            Log.i("TAG","Ca ne fonctionnne pas....");
    }



}