Почему я получаю эту ошибку в своем ListFragment?

Это конкретная ошибка, о которой мне интересно.Почему я получаю эту ошибку в своем ListFragment?

02-14 00:54:41.993: E/AndroidRuntime(2000): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.thesis.menubook/com.thesis.menubook.MenuMain}: java.lang.RuntimeException: Your content must have a ListView whose id attribute is 'android.R.id.list'

Я исследовал и положил ListView в моей XML в android:id = "@android:id/list", но все же, ошибка не будет устранена.

Вот мой .java файл

package com.thesis.menubook; 

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

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

import android.annotation.TargetApi; 
import android.app.ListFragment; 
import android.app.ProgressDialog; 
import android.os.AsyncTask; 
import android.os.Build; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 

@TargetApi(Build.VERSION_CODES.HONEYCOMB) 
public class MenuCategory extends ListFragment { 
    JSONParser jsonParser = new JSONParser(); 
    ArrayList<HashMap<String, String>> categoryList = new ArrayList<HashMap<String, String>>(); 
    private ProgressDialog pDialog; 

    @Override 
    public void onActivityCreated(Bundle savedInstanceState) { 
     super.onActivityCreated(savedInstanceState); 
     new GetCategories().execute(); 
    } 


    @Override 
    public void onResume() { 
     //onResume happens after onStart and onActivityCreate 
     new GetCategories().execute(); 
     super.onResume() ; 
    } 

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

     /** 
     * Before starting background thread Show Progress Dialog 
     * */ 
     @Override 
     protected void onPreExecute() { 
      super.onPreExecute(); 
      pDialog = new ProgressDialog(getActivity().getApplicationContext()); 
      Log.d("Activity Context", getActivity().getApplicationContext().toString() + ""); 
      pDialog.setMessage("Loading Categories. Please wait..."); 
      pDialog.setIndeterminate(false); 
      pDialog.setCancelable(false); 
      pDialog.show(); 
     } 

     /** 
     * Getting product details in background thread 
     * */ 
     protected String doInBackground(String... param) { 
      Bundle b = getActivity().getIntent().getExtras(); 
      String ipaddress = b.getString("IPAddress"); 

      List<NameValuePair> params = new ArrayList<NameValuePair>(); 
      Log.d("IP ADDRESS", ipaddress +" "); 

      JSONObject json = jsonParser.makeHttpRequest("http://"+ipaddress+"/MenuBook/selectCategories.php", "GET", params); 

      // Check your log cat for JSON reponse 
      Log.d("All Categories: ", json.toString() + " "); 
      int num = 1; 
      try { 
       // Checking for SUCCESS TAG 
       int success = json.getInt("success"); 

       if (success == 1) { 
        // products found 
        // Getting Array of Products 

        JSONArray category_list = json.getJSONArray("category_list"); 
        Log.d("Category List JSON Array", category_list.toString() + ""); 
        // looping through All Products 
        for (int j = 1; j < category_list.length(); j++) { 
         JSONObject c = category_list.getJSONObject(j); 

         // Storing each json item in variable 
         String category = c.getString("category"); 

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

         // adding each child node to HashMap key => value 
         map.put("category", category); 

         Log.d("category #"+num+"", category + " "); 
         num = num + 1; 
         // adding HashList to ArrayList 
         if(categoryList.contains(map) != true) 
         { 
          categoryList.add(map); 
         } 
         Log.d("Category List", categoryList.toString() + " "); 
        } 
       } 
      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 

      return null; 
     } 

     /** 
     * After completing background task Dismiss the progress dialog 
     * **/ 
     @Override 
     protected void onPostExecute(String result) { 
      pDialog.dismiss(); 

      ArrayAdapter<ArrayList<HashMap<String, String>>> arrayAdapter = new ArrayAdapter<ArrayList<HashMap<String, String>>> 
      (getActivity().getApplicationContext(), 
        R.layout.activity_menu_category); 
      arrayAdapter.add(categoryList); 
      Log.d("Category List", categoryList.toString() + ""); 
      setListAdapter(arrayAdapter); 

     } 

    } 
}

А вот XML-

<?xml version="1.0" encoding="utf-8"?> 
<ListView xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id="@android:id/list" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" > 


</ListView>

ОБНОВЛЕНО JAVA FILE

package com.thesis.menubook; 

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

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

import android.annotation.TargetApi; 
import android.app.ListFragment; 
import android.app.ProgressDialog; 
import android.os.AsyncTask; 
import android.os.Build; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.ListAdapter; 

@TargetApi(Build.VERSION_CODES.HONEYCOMB) 
public class MenuCategory extends ListFragment { 
    JSONParser jsonParser = new JSONParser(); 
    ArrayList<HashMap<String, String>> categoryList = new ArrayList<HashMap<String, String>>(); 
    private ProgressDialog pDialog; 

    @Override 
    public void onActivityCreated(Bundle savedInstanceState) { 
     super.onActivityCreated(savedInstanceState); 
     new GetCategories().execute(); 
    } 


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

     /** 
     * Before starting background thread Show Progress Dialog 
     * */ 
     @Override 
     protected void onPreExecute() { 
      super.onPreExecute(); 
      pDialog = new ProgressDialog(getActivity()); 
      Log.d("Activity Context", getActivity().getApplicationContext().toString() + ""); 
      pDialog.setMessage("Loading Categories. Please wait..."); 
      pDialog.setIndeterminate(false); 
      pDialog.setCancelable(false); 
      pDialog.show(); 
     } 

     /** 
     * Getting product details in background thread 
     * */ 
     protected String doInBackground(String... param) { 
      Bundle b = getActivity().getIntent().getExtras(); 
      String ipaddress = b.getString("IPAddress"); 

      List<NameValuePair> params = new ArrayList<NameValuePair>(); 
      Log.d("IP ADDRESS", ipaddress +" "); 

      JSONObject json = jsonParser.makeHttpRequest("http://"+ipaddress+"/MenuBook/selectCategories.php", "GET", params); 

      // Check your log cat for JSON reponse 
      Log.d("All Categories: ", json.toString() + " "); 
      int num = 1; 
      try { 
       // Checking for SUCCESS TAG 
       int success = json.getInt("success"); 

       if (success == 1) { 
        // products found 
        // Getting Array of Products 

        JSONArray category_list = json.getJSONArray("category_list"); 
        Log.d("Category List JSON Array", category_list.toString() + ""); 
        // looping through All Products 
        for (int j = 1; j < category_list.length(); j++) { 
         JSONObject c = category_list.getJSONObject(j); 

         // Storing each json item in variable 
         String category = c.getString("category"); 

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

         // adding each child node to HashMap key => value 
         map.put("category", category); 

         Log.d("category #"+num+"", category + " "); 
         num = num + 1; 
         // adding HashList to ArrayList 
         if(categoryList.contains(map) != true) 
         { 
          categoryList.add(map); 
         } 
         Log.d("Category List", categoryList.toString() + " "); 
        } 
       } 
      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 

      return null; 
     } 

     /** 
     * After completing background task Dismiss the progress dialog 
     * **/ 
     @Override 
     protected void onPostExecute(String result) { 
      pDialog.dismiss(); 

      ListAdapter arrayAdapter = new ArrayAdapter<ArrayList<HashMap<String, String>>> 
      (getActivity(), 
        R.layout.activity_menu_category, R.id.category); 
      Log.d("Category List", categoryList.toString() + ""); 
      setListAdapter(arrayAdapter); 

     } 

    } 
}

ОБНОВЛЕНО XML FILE

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:id = "@android:id/list" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" > 
    <TextView 
     android:id="@+id/category" 
     android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:paddingTop="6dip" 
     android:paddingLeft="6dip" 
     android:textSize="20sp" 
     android:textStyle="bold" /> 
</LinearLayout>

LogCat после замены getActivity() getApplicationContext() с getActivity() и ArrayAdapter с LsitAdapter и изменения XML-файл:.

02-14 01:56:15.382: V/TLINE(2474): new: [email protected] 
02-14 01:56:16.772: V/TLINE(2474): new: [email protected] 
02-14 01:56:47.052: D/dalvikvm(2474): GC_FOR_ALLOC freed 160K, 5% free 6481K/6791K, paused 167ms 
02-14 01:56:47.096: I/dalvikvm-heap(2474): Grow heap (frag case) to 6.927MB for 513744-byte allocation 
02-14 01:56:47.566: D/dalvikvm(2474): GC_CONCURRENT freed 2K, 5% free 6981K/7303K, paused 24ms+26ms 
02-14 01:56:48.123: D/NetWork Info(2474): NetworkInfo: type: mobile[UMTS], state: CONNECTED/CONNECTED, reason: simLoaded, extra: internet, roaming: false, failover: false, isAvailable: true 
02-14 01:56:54.762: D/Response(2474): [email protected] from apache 
02-14 01:56:54.762: D/IP Address(2474): 192.168.10.149:80 
02-14 01:56:54.898: D/NEXT VALUE --in Async on postexecute(2474): true 
02-14 01:56:58.702: D/dalvikvm(2474): GC_CONCURRENT freed 95K, 4% free 7297K/7559K, paused 9ms+21ms 
02-14 01:57:04.461: D/URL(2474): http://192.168.10.149:80/MenuBook/checkTable.php 
02-14 01:57:07.901: D/Check Table(2474): {"success":1,"tabledb":[{"table_location":"UP","table_seat":"5","table_status":"AVAILABLE","table_ID":"001"}]} 
02-14 01:57:08.028: D/Table Status in doinbg(2474): AVAILABLE 
02-14 01:57:08.518: D/Table Status in post execute(2474): AVAILABLE 
02-14 01:57:10.718: D/Activity Context(2474): [email protected] 
02-14 01:57:10.982: D/IP ADDRESS(2474): 192.168.10.149:80 
02-14 01:57:12.905: D/dalvikvm(2474): GC_CONCURRENT freed 267K, 6% free 7451K/7879K, paused 10ms+22ms 
02-14 01:57:17.432: D/All Categories:(2474): {"success":1,"category_list":[{"category":"MAIN DISH"},{"category":"MAIN DISH"},{"category":"DESSERT"}]} 
02-14 01:57:17.572: D/Category List JSON Array(2474): [{"category":"MAIN DISH"},{"category":"MAIN DISH"},{"category":"DESSERT"}] 
02-14 01:57:17.572: D/category #1(2474): MAIN DISH 
02-14 01:57:17.638: D/Category List(2474): [{category=MAIN DISH}] 
02-14 01:57:17.862: D/category #2(2474): DESSERT 
02-14 01:57:18.022: D/Category List(2474): [{category=MAIN DISH}, {category=DESSERT}] 
02-14 01:57:18.672: D/Category List(2474): [{category=MAIN DISH}, {category=DESSERT}] 
02-14 01:57:20.442: D/dalvikvm(2474): GC_CONCURRENT freed 371K, 8% free 7561K/8135K, paused 14ms+14ms 
02-14 01:57:20.632: D/dalvikvm(2474): GC_FOR_ALLOC freed <1K, 8% free 7560K/8135K, paused 174ms 
02-14 01:57:20.652: I/dalvikvm-heap(2474): Grow heap (frag case) to 7.726MB for 246508-byte allocation 
02-14 01:57:20.882: D/dalvikvm(2474): GC_FOR_ALLOC freed 0K, 8% free 7801K/8391K, paused 148ms

источник

2013-02-13 John Ernest Guadalupe

Чтобы было ясно, XML, что вы Размещенное 'Рез/макет/activity_menu_category.xml'? – Sam

Да это на самом деле –

Вы понимаете, что вам не нужно раздувать пользовательский вид? ListFragment предоставляет вам список в отдельности. Просто избавитесь от метода onCreateView – dymmeh

Изменить ListView для этого:

<ListView xmlns:android="http://schemas.android.com/apk/res/android" 
android:id="@id/android:list" 
android:layout_width="match_parent" 
android:layout_height="match_parent" > 
</ListView>

я изменил идентификатор к этому: android:id="@id/android:list"

Согласно this обучающая

источник

2013-02-13 17:00:21

Вы пробовали это? – Sam

К сожалению, я добавил ссылка –

Я попробовал, и у нее все те же ошибки –

Я, наконец, получены данные, и это, заменив определение ArrayAdapter на пункте onPostExecute

 @Override 
     protected void onPostExecute(String result) { 
      pDialog.dismiss(); 

      ArrayAdapter<String> arrayAdapter = new ArrayAdapter<String> 
      (getActivity(), 
        R.layout.activity_menu_category, R.id.category); 
      for(int i = 0; i<= categoryList.size() - 1; i++) 
      { 
       String value = categoryList.get(i).values().toString(); 
       value.replace('[', ' '); 
       value.replace(']', ' '); 
       arrayAdapter.add(value); 
       Log.d("Specific Value Category List", value + ""); 
      } 
      Log.d("Category List", categoryList.toString() + ""); 
      setListAdapter(arrayAdapter); 

     }

источник

2013-02-13 18:28:35

Почему я получаю эту ошибку в своем ListFragment?

ответ

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