Android Fragments İçerik Gösterimi Henüz Oluşturulmadı

Question

Her şey yolunda gidiyordu. Ancak, uygulamamdan bazı testler yapıldıktan sonra. Çöküyor ve Logcat'imde bu "İçerik Görünümü Oluşturulmadı" ifadesini görüyorum. Bazı yayınlardan sonra, listadapter'imi EtkinliğiEn iyi duruma getirmem gerektiğini öğrendim. Kodlarım biraz farklı, bir lazyadapter kullanıyorum, bu yüzden bazı tavsiyeye ihtiyacım var. Lütfen bana yardım et.

public class AndroidFragment extends SherlockListFragment implements  ActionBar.TabListener{ 

      static final String URL = "https://xml.xml"; 
      static final String KEY_SONG = "song"; 
      static final String KEY_ID = "id"; 
      static final String KEY_TITLE = "title"; 
      static final String KEY_CAT_ARTIST = "artistcat"; 
      static final String KEY_DURATION = "duration"; 
      static final String KEY_THUMB_URL = "thumb_url"; 
      static final String KEY_BIG_URL = "big_url"; 
      static final String KEY_CAT_URL = "cat_url"; 
      static final String KEY_DESC = "cat_desc"; 
      ArrayList<HashMap<String, String>> menuItems; 
      ListAdapter adapter; 
      Context appContext; 

      @Override 
      public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){ 
       appContext = inflater.getContext().getApplicationContext(); 

       new loadListView().execute(); 



      return super.onCreateView(inflater, container, savedInstanceState); 
      } 


      public class loadListView extends AsyncTask<Integer, String, String> { 

      @Override 
      protected void onPreExecute() { 
        super.onPreExecute(); 
      } 

      @Override 
      protected String doInBackground(Integer... args) { 
       // updating UI from Background Thread 
      menuItems = new ArrayList<HashMap<String, String>>(); 


      XMLParser parser = new XMLParser(); 
      String xml = parser.getXmlFromUrl(URL); // getting XML 
      Document doc = parser.getDomElement(xml); // getting DOM element 

      NodeList nl = doc.getElementsByTagName(KEY_SONG); 
      // looping through all item nodes <item> 
      for (int i = 0; i < nl.getLength(); i++) { 
      // creating new HashMap 
      HashMap<String, String> map = new HashMap<String, String>(); 
      Element e = (Element) nl.item(i); 
      // adding each child node to HashMap key => value 
      map.put(KEY_ID, parser.getValue(e, KEY_ID)); 
      map.put(KEY_TITLE, parser.getValue(e, KEY_TITLE)); 
      map.put(KEY_CAT_ARTIST, parser.getValue(e, KEY_CAT_ARTIST)); 
      map.put(KEY_DURATION, parser.getValue(e, KEY_DURATION)); 
      map.put(KEY_THUMB_URL, parser.getValue(e, KEY_THUMB_URL)); 
      map.put(KEY_BIG_URL, parser.getValue(e, KEY_BIG_URL)); 
      map.put(KEY_CAT_URL, parser.getValue(e, KEY_CAT_URL)); 
      map.put(KEY_DESC, parser.getValue(e, KEY_DESC)); 
      // adding HashList to ArrayList 
      menuItems.add(map); 
      } 
      return null; 
      } 


      @Override 
      protected void onPostExecute(String args) { 

      if (getActivity() != null) { 
      adapter=new MainPageLazyAdapter(getActivity(), menuItems); 
      setListAdapter(adapter); 


      } 

      } 
      } 


      @Override 
      public void onTabSelected(Tab tab, FragmentTransaction ft) { 
      ft.add(android.R.id.content, this); 
      ft.attach(this); 
      } 

      @Override 
      public void onTabUnselected(Tab tab, FragmentTransaction ft) { 
      ft.detach(this); 

      } 

      @Override 
      public void onTabReselected(Tab tab, FragmentTransaction ft) { 
      } 

     } 

MY LogCat:

10-08 17:29:32.946: E/AndroidRuntime(6376): FATAL EXCEPTION: main 
10-08 17:29:32.946: E/AndroidRuntime(6376): java.lang.IllegalStateException: Content view not yet created 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at android.support.v4.app.ListFragment.ensureList(ListFragment.java:328) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at android.support.v4.app.ListFragment.getListView(ListFragment.java:222) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at in.wptrafficanalyzer.actionbarsherlocknavtab.AndroidFragment$loadListView.onPostExecute(AndroidFragment.java:108) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at in.wptrafficanalyzer.actionbarsherlocknavtab.AndroidFragment$loadListView.onPostExecute(AndroidFragment.java:1) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at android.os.AsyncTask.finish(AsyncTask.java:602) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at android.os.AsyncTask.access$600(AsyncTask.java:156) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:615) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at android.os.Handler.dispatchMessage(Handler.java:99) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at android.os.Looper.loop(Looper.java:137) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at android.app.ActivityThread.main(ActivityThread.java:4512) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at java.lang.reflect.Method.invokeNative(Native Method) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at java.lang.reflect.Method.invoke(Method.java:511) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:982) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:749) 
10-08 17:29:32.946: E/AndroidRuntime(6376):  at dalvik.system.NativeStart.main(Native Method) 

Answer 1

Bu sorunu çözmek gerektiğini düşünüyorum.

@Override 
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){ 
    View view = inflater.inflate(R.layout.layout, null); 
    return view //You must return your view here 
} 

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