Afficher la Listview

Bonjour, j'essaye de faire afficher des données dans ma ListView depuis ma base de données, tout semble être correct, mais pourtant rien ne s'affiche ...... besoin de votre aide svp !!!

Code:

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package com.ibth.listviewbdd;
 
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
 
import android.app.ProgressDialog;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
 
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
 
import java.util.ArrayList;
import java.util.HashMap;
 
public class MainActivity extends AppCompatActivity {
    ListView ls;
    ProgressDialog dialog;
    JSONParser parser=new JSONParser();
    ArrayList<HashMap<String,String>> values= new ArrayList<HashMap<String, String>>();
 
    int success;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ls=findViewById(R.id.lst);
 
        new All().execute();
 
        ls.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                TextView t=view.findViewById(R.id.id);
 
                Intent i=new Intent(MainActivity.this, DetailActivity.class);
                i.putExtra("id",t.getText().toString());
                startActivity(i);
            }
        });
 
    }
 
 
    class All extends AsyncTask<String,String,String>
    {
 
        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            dialog=new ProgressDialog(MainActivity.this);
            dialog.setMessage("Patientez SVP");
            dialog.show();
 
        }
 
        @Override
        protected String doInBackground(String... strings) {
 
            HashMap<String,String> map = new HashMap<>();
            JSONObject object=parser.makeHttpRequest("http://10.0.2.2/User/all.php","GET",map);
            try {
                success=object.getInt("success");
                if(success==1)
                {
                    JSONArray users= object.getJSONArray("users");
                    for(int i=0;i<users.length();i++)
                    {
                        JSONObject user=users.getJSONObject(i);
                        HashMap<String,String> m= new HashMap<String,String>();
                        m.put("id",user.getString("id"));
                        m.put("nom",user.getString("nom"));
                        m.put("age", user.getString("age"));
 
                        values.add(m);
 
 
                    }
 
 
 
                }
 
 
 
            } catch (JSONException e) {
                e.printStackTrace();
            }
 
 
            return null;
        }
 
 
        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            dialog.cancel();
            Log.e("user",values.toString());
            SimpleAdapter adapter=new SimpleAdapter(MainActivity.this,values,R.layout.item,
                    new String[]{"id","nom","age"}, new int[]{R.id.id, R.id.nom,R.id.age}    );
 
            ls.setAdapter(adapter);
 
        }
    }
 
 
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
 
        menu.add(0,1,0,"Ajouter utilsateur");
 
        return super.onCreateOptionsMenu(menu);
    }
 
    @Override
    public boolean onOptionsItemSelected(@NonNull MenuItem item) {
 
        if(item.getItemId()==1)
        {
            Intent i=new Intent(getApplicationContext(),MainActivity.class);
            startActivity(i);
 
        }
 
 
        return super.onOptionsItemSelected(item);
    }
}

JASONPerson class

Code:

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package com.ibth.listviewbdd;
 
import android.util.Log;
 
import org.json.JSONException;
import org.json.JSONObject;
 
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.ProtocolException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.HashMap;
 
public class JSONParser {
 
    String charset = "UTF-8";
    HttpURLConnection conn;
    DataOutputStream wr;
    StringBuilder result;
    URL urlObj;
    JSONObject jObj = null;
    StringBuilder sbParams;
    String paramsString;
 
    public JSONObject makeHttpRequest(String url, String method,
                                      HashMap<String,String> params) {
 
        sbParams = new StringBuilder();
        int i = 0;
        for (String key : params.keySet()) {
            try {
                if (i != 0){
                    sbParams.append("&");
                }
                sbParams.append(key).append("=")
                        .append(URLEncoder.encode(params.get(key), charset));
 
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            }
            i++;
        }
 
        if (method.equals("POST")) {
            // request method is POST
            try {
                urlObj = new URL(url);
 
                conn = (HttpURLConnection) urlObj.openConnection();
 
                conn.setDoOutput(true);
 
                conn.setRequestMethod("POST");
 
                conn.setRequestProperty("Accept-Charset", charset);
 
                conn.setReadTimeout(10000);
                conn.setConnectTimeout(15000);
 
                conn.connect();
 
                paramsString = sbParams.toString();
 
                wr = new DataOutputStream(conn.getOutputStream());
                wr.writeBytes(paramsString);
                wr.flush();
                wr.close();
 
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        else if(method.equals("GET")){
            // request method is GET
 
            if (sbParams.length() != 0) {
                url += "?" + sbParams.toString();
            }
 
            try {
                urlObj = new URL(url);
 
                conn = (HttpURLConnection) urlObj.openConnection();
 
                conn.setDoOutput(false);
 
                conn.setRequestMethod("GET");
 
                conn.setRequestProperty("Accept-Charset", charset);
 
                conn.setConnectTimeout(15000);
 
                conn.connect();
 
            } catch (IOException e) {
                e.printStackTrace();
            }
 
        }
 
        try {
            //Receive the response from the server
            InputStream in = new BufferedInputStream(conn.getInputStream());
            BufferedReader reader = new BufferedReader(new InputStreamReader(in));
            result = new StringBuilder();
            String line;
            while ((line = reader.readLine()) != null) {
                result.append(line);
            }
 
            Log.d("JSON Parser", "result: " + result.toString());
 
        } catch (IOException e) {
            e.printStackTrace();
        }
 
        conn.disconnect();
 
        // try parse the string to a JSON object
        try {
            jObj = new JSONObject(result.toString());
        } catch (JSONException e) {
            Log.e("JSON Parser", "Error parsing data " + e.toString());
        }
 
        // return JSON Object
        return jObj;
    }
}

fichier xml

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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
 
    <ListView
        android:id="@+id/lst"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
 
 
</LinearLayout>

ma listview en xml

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<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
 
    <ImageView
        android:id="@+id/imageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        app:srcCompat="@mipmap/ic_launcher" />
 
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="3"
        android:orientation="vertical"
        android:padding="10dp">
 
        <TextView
            android:id="@+id/id"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="TextView"
            android:visibility="gone" />
 
        <TextView
            android:id="@+id/nom"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="TextView" />
 
        <TextView
            android:id="@+id/age"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="TextView" />
    </LinearLayout>
</LinearLayout>

Merci pour votre aide