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 !!!
JASONPerson class
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141 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); } }
fichier xml
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136 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; } }
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15 <?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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40 <?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
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