OnItemClick из ListView

Question

Я хочу, чтобы появиться новый вид деятельности, когда я нажимаю на ListItem, это весь мой код:

Это код в ListViewActivity в:

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

import json.JSONParser; 

import org.apache.http.NameValuePair; 
import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import android.app.ListActivity; 
import android.app.ProgressDialog; 
import android.content.Intent; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.ListAdapter; 
import android.widget.ListView; 
import android.widget.SimpleAdapter; 
import android.widget.TextView; 

public class IntervActivity extends ListActivity implements OnItemClickListener 
{ 
    //private static final String TAG_PID = "ID"; 
    private static final String TAG_NAME = "name"; 
    ArrayList<HashMap<String, String>> actList; 
    private ProgressDialog progressMessage; 
    private static String url_act= "http://10.0.2.2/Scripts/liste_interventions.php"; 
    //private static String url_act= "http://192.168.43.95/android_Web_Service/actualite.php"; 
    JSONParser jParser = new JSONParser(); 
    JSONArray act = null; 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.interv_list); 
     actList = new ArrayList<HashMap<String, String>>(); 
     new LoadAllact().execute(); 

      // Get listview 
     ListView lv = getListView(); 
     lv.setOnItemClickListener(new OnItemClickListener() { 

      @Override 
      public void onItemClick(AdapterView<?> parent, View view, 
        int position, long id) { 
       // getting values from selected ListItem 
       String name= ((TextView) view.findViewById(R.id.name)).getText().toString(); 

       // Starting new intent 
       Intent in = new Intent(IntervActivity.this, 
         DetailsActivity.class); 
       // sending pid to next activity 
       in.putExtra(TAG_NAME, name); 
       startActivity(in); 
      } 
     }); 



    } 


    class LoadAllact extends AsyncTask<String,String,String> 
    { 

     @Override 
     protected void onPreExecute() { 
      super.onPreExecute(); 
      progressMessage = new ProgressDialog(IntervActivity.this); 
      progressMessage.setMessage("chargement actualité..."); 
      progressMessage.setIndeterminate(false); 
      progressMessage.setCancelable(false); 
      progressMessage.show(); 
     } 

     protected String doInBackground(String... args) { 
     List<NameValuePair> params = new ArrayList<NameValuePair>(); 
     JSONObject json = jParser.makeHttpRequest(url_act, "GET", params); 
     Log.d("actualite: ", json.toString()); 
     try { 
      int success = json.getInt("success"); 

      if (success == 1) 
      { 
       act = json.getJSONArray("act"); 
       for (int i = 0; i < act.length(); i++) 
       { 
        JSONObject c = act.getJSONObject(i); 
        // String id = c.getString("id"); 
        String name = c.getString("name"); 

        // creating new HashMap 
        HashMap<String, String> map = new HashMap<String, String>(); 

        // adding each child node to HashMap key => value 
        //map.put("Int_id", id); 
        map.put("Int_name", name); 
        actList.add(map); 
       } 
      } 
     } catch (JSONException e) {e.printStackTrace();} 
     return null; 
     } 
     protected void onPostExecute(String file_url) 
     { 
      progressMessage.dismiss(); 
      runOnUiThread(new Runnable() 
      { 
       public void run() { 
       ListAdapter adapter = new SimpleAdapter(
         IntervActivity.this, actList, 
       R.layout.interv_list_item, new String[] {"Int_name"}, 
       new int[]{ R.id.name }); 
       setListAdapter(adapter); 
       } 
      }); 

     } 

    } 


    @Override 
    public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) { 
     // TODO Auto-generated method stub 

    } 
    } 

и это код DetailsActivity, что я хочу, чтобы появиться, когда я нажимаю на любом из пунктов ListView:

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

import json.JSONParser; 

import org.apache.http.NameValuePair; 
import org.apache.http.message.BasicNameValuePair; 
import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import android.app.Activity; 
import android.app.ProgressDialog; 
import android.content.Intent; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.MenuItem; 
import android.widget.EditText; 
import android.widget.TextView; 

public class DetailsActivity extends Activity { 
    private static final String TAG_NAME = "name"; 
    public String name; 
     private static final String TAG_SUCCESS = "success"; 
    ArrayList<HashMap<String, String>> actList; 
     private ProgressDialog pDialog; 
     private static String url_int_details= "http://10.0.2.2/Scripts/details_intervention.php"; 
     //private static String url_act= "http://192.168.43.95/android_Web_Service/actualite.php"; 
     JSONParser jParser = new JSONParser(); 

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

     Intent i = getIntent(); 

     // getting product id (pid) from intent 
     String name = i.getStringExtra("name"); 

     // Getting complete product details in background thread 
     new GetProductDetails().execute(); 




    } 
    @Override 
    public boolean onOptionsItemSelected(MenuItem item) { 
     // Handle action bar item clicks here. The action bar will 
     // automatically handle clicks on the Home/Up button, so long 
     // as you specify a parent activity in AndroidManifest.xml. 
     int id = item.getItemId(); 



     return super.onOptionsItemSelected(item); 
    } 
    class GetProductDetails extends AsyncTask<String, String, String> { 

     /** 
     * Before starting background thread Show Progress Dialog 
     * */ 
     @Override 
     protected void onPreExecute() { 
      super.onPreExecute(); 
      pDialog = new ProgressDialog(DetailsActivity.this); 
      pDialog.setMessage("Loading product details. Please wait..."); 
      pDialog.setIndeterminate(false); 
      pDialog.setCancelable(true); 
      pDialog.show(); 
     } 

     /** 
     * Getting product details in background thread 
     * */ 
     protected String doInBackground(String... params) { 


      // updating UI from Background Thread 
      runOnUiThread(new Runnable() { 
       public void run() { 
        // Check for success tag 
        int success; 
        try { 
         // Building Parameters 
         List<NameValuePair> params = new ArrayList<NameValuePair>(); 
         params.add(new BasicNameValuePair("name", name)); 

         // getting product details by making HTTP request 
         // Note that product details url will use GET request 
         JSONObject json = jParser.makeHttpRequest(
           url_int_details, "GET", params); 

         // check your log for json response 
         Log.d("Single Product Details", json.toString()); 

         // json success tag 
         success = json.getInt(TAG_SUCCESS); 
         if (success == 1) { 
          // successfully received product details 
          JSONArray productObj = json 
            .getJSONArray("interv"); // JSON Array 

          // get first product object from JSON Array 
          JSONObject product = productObj.getJSONObject(0); 

          TextView tvLibelle = (TextView) 
            findViewById(R.id.textView1); 
          tvLibelle.setText(product.getString("name")); 
          TextView tvDate= (TextView) 
            findViewById(R.id.textView2); 
          tvDate.setText(product.getString("date")); 
          TextView tvEchéance= (TextView) 
            findViewById(R.id.textView3); 
          tvEchéance.setText(product.getString("date_deadline")); 
          TextView tvPriorité= (TextView) 
            findViewById(R.id.textView4); 
          tvPriorité.setText(product.getString("priority")); 
          TextView tvDescription= (TextView) 
            findViewById(R.id.textView5); 
          tvDescription.setText(product.getString("description")); 
          TextView tvEtat= (TextView) 
            findViewById(R.id.textView6); 
          tvEtat.setText(product.getString("state")); 
         }else{ 
          // product with pid not found 
         } 
        } catch (JSONException e) { 
         e.printStackTrace(); 
        } 
       } 
      }); 

      return null; 
     } 

     /** 
     * After completing background task Dismiss the progress dialog 
     * **/ 
     protected void onPostExecute(String file_url) { 
      // dismiss the dialog once got all details 
      pDialog.dismiss(); 
     } 
    } 
} 

Это DetailsActivity код XML:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:gravity="top" 

    android:background="#99E7E5" 
    tools:context="com.example.mobisav.DetailsActivity" > 

    <TextView 
     android:id="@+id/textView6" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignBaseline="@+id/textView4" 
     android:layout_alignBottom="@+id/textView4" 
     android:layout_alignRight="@+id/textView2" 
     android:hint="@string/Etat" 
     android:textAppearance="?android:attr/textAppearanceSmall" /> 

    <TextView 
     android:id="@+id/textView3" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignLeft="@+id/textView2" 
     android:layout_below="@+id/textView2" 
     android:layout_marginTop="36dp" 
     android:hint="@string/Echeance" 
     android:textAppearance="?android:attr/textAppearanceSmall" /> 

    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentTop="true" 
     android:layout_toRightOf="@+id/textView5" 
     android:hint="@string/Nom_intervention" /> 

    <TextView 
     android:id="@+id/textView4" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignRight="@+id/textView1" 
     android:layout_centerVertical="true" 
     android:hint="@string/Priority" 
     android:textAppearance="?android:attr/textAppearanceSmall" /> 

    <TextView 
     android:id="@+id/textView5" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_above="@+id/button1" 
     android:layout_alignLeft="@+id/textView6" 
     android:layout_marginBottom="33dp" 
     android:hint="@string/Description" 
     android:textAppearance="?android:attr/textAppearanceSmall" /> 

    <TextView 
     android:id="@+id/textView2" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentLeft="true" 
     android:layout_below="@+id/textView1" 
     android:layout_marginTop="28dp" 
     android:hint="@string/Date" 
     android:textAppearance="?android:attr/textAppearanceSmall" /> 

    <Button 
     android:id="@+id/button1" 
     style="?android:attr/buttonStyleSmall" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:layout_alignParentBottom="true" 
     android:layout_marginBottom="14dp" 
     android:layout_toLeftOf="@+id/textView4" 
     android:hint="@string/Appeler" /> 

</RelativeLayout> 

и, наконец, это файл PHP, который совпадает с базой данных:

<?php 
// array for JSON response 
$response = array(); 
$hostname_localhost ='localhost'; 
$port_localhost =5432; 
$database_localhost ='techmobi'; 
$username_localhost ='openpg'; 
$password_localhost ='openpgpwd'; 
$localhost = "host='$hostname_localhost' port='$port_localhost' dbname='$database_localhost' user='$username_localhost' password='$password_localhost'"; 
// check for post data 
$connexion =pg_connect($localhost) or die ("Erreur de connexion ".pg_last_error()); 
if (isset($_GET["name"])) { 
    $name = $_GET["name"]; 
$query_search = "SELECT id, name, date, priority, state, description, date_deadline FROM crm_helpdesk WHERE name = $name"; 
$query_exec = pg_query($query_search) or die(pg_error()); 
if (!empty($query_exec)) { 
     // check for empty result 
     if (pg_num_rows($result) > 0) { 

      $query_exec = pg_fetch_array($query_exec); 

      $interv = array(); 
      $interv["id"] = $query_exec ["id"]; 
      $interv["name"] = $query_exec ["name"]; 
      $interv["date"] = $query_exec ["date"]; 
      $interv["description"] = $query_exec ["description"]; 
      $interv["priority"] = $query_exec ["priority"]; 
      $interv["state"] = $query_exec ["state"]; 
      $interv["date_deadline"] = $query_exec ["date_deadline"]; 

      // success 
      $response["success"] = 1; 

      // user node 
      $response["interv"] = array(); 

      array_push($response["interv"], $interv); 

      // echoing JSON response 
      echo json_encode($response); 
     } else { 
      // no product found 
      $response["success"] = 0; 
      $response["message"] = "No product found"; 

      // echo no users JSON 
      echo json_encode($response); 
     } 
    } else { 
     // no product found 
     $response["success"] = 0; 
     $response["message"] = "No product found"; 

     // echo no users JSON 
     echo json_encode($response); 
    } 
} else { 
    // required field is missing 
    $response["success"] = 0; 
    $response["message"] = "Required field(s) is missing"; 

    // echoing JSON response 
    echo json_encode($response); 
} 
?> 

Когда я запускаю мое приложение, и я нажимаю любой элемент списка, появляется новый вид деятельности, но нет никаких данных от БД на нем.

Пожалуйста, помогите

Answer 1

хорошо, проблема ваша строка url_int_details в DetailsActivity так же, как url_act. Что я могу увидеть в вашем DetailsActivity: вы используете метод GET из «http://10.0.2.2/Scripts/details_intervention.php». И этот url содержит listView, как вы сказали, но не деталь. Итак, как решить эту проблему. Вы должны создать new_url_int_details так:

http://10.0.2.2/Scripts/details_intervention.php?id=12 

Ваш URL должен содержать идентификатор вашего элемента. Я сделал что-то вроде вашей идеи, вы можете узнать больше из моего проекта. Это мой Detail_Activity:

public class FMovieDetailsActivity extends Activity { 
ArrayList<CinemaItems> cinemaList; 
String id; 
TextView tvNameF; 
TextView tvLengthF; 
TextView tvIMDbF; 
TextView tvStartF; 
TextView tvDescriptionF; 
TextView tvCatF; 
TextView tvTrailer; 
TextView tvLengthTrailer; 
ListView listView; 
Button btnTrailer; 

private Context context; 

ImageView f_imageTrailer; 
ImageView f_imageView; 
private static final String TAG_ID = "id"; 
private static final String TAG_FUTURE_MOVIE = "future_movie"; 
private static final String TAG_NAME_F = "movienameF"; 
private static final String TAG_DESCRIPTION_F = "descriptionF"; 
private static final String TAG_IMDB_F = "imdbF"; 
private static final String TAG_LENGTH_F = "lengthF"; 
private static final String TAG_CAT = "cat_name"; 
private static final String TAG_IMAGE_F = "m_imageF"; 
private static final String TAG_SUCCESS_F = "success"; 
private static final String TAG_START_F = "startdateF"; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.moviedetails); 
    cinemaList = new ArrayList<CinemaItems>(); 

    Intent i = getIntent(); 
    id = i.getStringExtra(TAG_ID); 
    new JSONAsyncTask().execute(); 

    tvNameF = (TextView) findViewById(R.id.tvMovieName); 
    tvLengthF = (TextView) findViewById(R.id.tvLength); 
    tvIMDbF = (TextView) findViewById(R.id.tvIMdb); 
    tvStartF = (TextView) findViewById(R.id.tvStartDate); 
    tvDescriptionF = (TextView) findViewById(R.id.tvDescription); 
    tvCatF = (TextView) findViewById(R.id.tvCategory); 
    f_imageView = (ImageView) findViewById(R.id.imageMovieDetail); 

    ActionBar actionBar = getActionBar(); 
    actionBar.setDisplayHomeAsUpEnabled(true); 

} 

class JSONAsyncTask extends AsyncTask<String, String, String> { 
    ProgressDialog dialog; 

    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     dialog = new ProgressDialog(FMovieDetailsActivity.this); 
     dialog.setMessage("Loading, please wait"); 
     dialog.setTitle("Connecting server"); 
     dialog.show(); 
     dialog.setCancelable(false); 
    } 

    @Override 
    protected String doInBackground(String... urls) { 
     try { 
      List<NameValuePair> params = new ArrayList<NameValuePair>(); 
      params.add(new BasicNameValuePair(TAG_ID, id)); 
      Log.i("show parse id", id); 
      String paramString = URLEncodedUtils.format(params, "utf-8"); 
      //this is your problem, You lack of this url 
      String url = ServicesConfig.SERVICES_HOST + ServicesConfig.SERVICES_GET_FUTURE_DETAILS + "?" 
        + paramString; 

      Log.i("show url", url); 
      HttpGet httpget = new HttpGet(url); 
      HttpClient httpClient = new DefaultHttpClient(); 
      HttpResponse respone = httpClient.execute(httpget); 
      HttpEntity entity = respone.getEntity(); 
      return EntityUtils.toString(entity, "UTF-8"); 

     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
     return null; 
    } 

    @Override 
    protected void onPostExecute(String respone) { 
     try { 

      JSONObject jsono = new JSONObject(respone); 
      int success = jsono.optInt(TAG_SUCCESS_F, 0); 
      if (success == 1) { 
       JSONObject jsonObject = jsono.getJSONObject(TAG_FUTURE_MOVIE); 
       tvNameF.setText(jsonObject.optString(TAG_NAME_F)); 
       tvIMDbF.setText("IMDb: " + jsonObject.optString(TAG_IMDB_F)); 
       tvLengthF.setText("Duration: " + jsonObject.optString(TAG_LENGTH_F)); 
       tvStartF.setText("Start: " + jsonObject.optString(TAG_START_F)); 
       tvDescriptionF.setText(jsonObject.optString(TAG_DESCRIPTION_F)); 
       tvCatF.setText(jsonObject.optString(TAG_CAT)); 

       Picasso.with(context).load(ServicesConfig.SERVICES_HOST + jsonObject.optString(TAG_IMAGE_F)).fit() 
         .into(f_imageView); 
      } else { 
       Toast.makeText(getBaseContext(), "Unable to fetch data from server", Toast.LENGTH_SHORT).show(); 
      } 

     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
     dialog.dismiss(); 
    } 

} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 

    switch (item.getItemId()) { 
    case android.R.id.home: 

     this.finish(); 
     return true; 

    } 
    return super.onOptionsItemSelected(item); 
} 

}

Это мой PHP-файл:

<?php 
$response = array(); 

require_once __DIR__ . '/db_connect.php'; 

$db = new DB_CONNECT(); 

if (isset($_GET["id"])) { 
$id = $_GET['id']; 

$result = mysql_query("SELECT m.*, c.cat_name FROM future_movie as m inner join category as c on m.cat_id = c.cat_id WHERE m.id = $id"); 
$img = "test_cinema/images/product/"; 
if (!empty($result)) { 

    if (mysql_num_rows($result) > 0) { 

     $result = mysql_fetch_array($result); 

     $movie = array(); 
     $movie["id"] = $result["id"]; 
     $movie["movienameF"] = $result["movienameF"]; 
     $movie["descriptionF"] = $result["descriptionF"]; 
     $movie["imdbF"] = $result["imdbF"]; 
     $movie["lengthF"] = $result["lengthF"]; 
     $movie["startdateF"] = $result["startdateF"]; 
     $movie["cat_name"] = $result["cat_name"]; 
     $movie["m_imageF"] = $img.$result["m_imageF"]; 

     $response["success"] = 1; 


     $response["future_movie"] = $movie; 




     echo json_encode($response); 
    } else { 

     $response["success"] = 0; 
     $response["message"] = "No movie found"; 


     echo json_encode($response); 
    } 
} else { 

    $response["success"] = 0; 
    $response["message"] = "No movie found"; 


    echo json_encode($response); 
}} else { 

$response["success"] = 0; 
$response["message"] = "Required field(s) is missing"; 


echo json_encode($response);}?>