Где назвать adapter.notifyDataSetChanged в Async Task?

Question

Я знаю причину, по которой я получаю ошибку, показанную ниже (adapterD.notifyDataSetChanged(); заявление отсутствует в коде), но я точно не знаю, где назвать этот метод?

AsyncTask

public class GetAllCustomerTask2 extends AsyncTask<ApiConnector, Long, Void>{ 
    @Override 
    protected void onPreExecute() { 
     super.onPreExecute(); 
     next.setVisibility(View.GONE); 
     previous.setVisibility(View.GONE); 
    } 
    @Override 
    protected Void doInBackground(ApiConnector... params) { 
     List<NameValuePair> nameValuePairss = new ArrayList<NameValuePair>(1); 
     nameValuePairss.add(new BasicNameValuePair("token",token)); 
     nameValuePairss.add(new BasicNameValuePair("pageSize",pageSize+"")); 
     nameValuePairss.add(new BasicNameValuePair("pageNo",pageNumber+"")); 
     try { 
      if(!isCancelled()) { 
       jsonString = jsonParser.makeHttpRequest(url2+driverId+"/bookings", "GET", nameValuePairss); 
       jsonObject=new JSONObject(jsonString); 
       jsonResponseArray = jsonObject.getJSONArray("response"); 
       if(jsonResponseArray!=null){ 
        DutiesArrayList.clear(); 
        duties.clear(); 
        for (int i = 0; 
        i < jsonResponseArray.length(); 
        i++) { 
         Duties d=new Duties(); 
         JSONObject c = jsonResponseArray.getJSONObject(i); 
         destinationLabel = c.getString("destinationLabel"); 
         if (destinationLabel.length() <= 4) { 
          destinationLabel=""; 
         } 
         // if(destinationLabel.length()==0 || destinationLabel.length()==4){ 
          String iddD = c.getString("id"); 
          d.setid(iddD); 
          String pickupLabelD = c.getString("pickupLabel"); 
          d.setpickupLabel(pickupLabelD); 
          String statusD = c.getString("status"); 
          d.setstatus(statusD); 
          d.setdestinationLabel(destinationLabel); 
          duties.add(d); 
          // destinationLabelD = c.getString("destinationLabel"); 
          // if(statusD!="pending"){ 
           HashMap<String, String> contactD = new HashMap<String, String>(); 
           // contact.put(TAG_ID, Status); 
           contactD.put(D1, iddD); 
           contactD.put(D2, pickupLabelD); 
           contactD.put(D3, statusD); 
           contactD.put(D4, destinationLabel); 
           DutiesArrayList.add(contactD); 
           // Collections.reverse(DutiesArrayList); 
           // 
          } 
          // 
         } 
        } 
        count=DutiesArrayList.size(); 
       } 
       else { 
        Toast.makeText(getActivity(), "No More Duties", Toast.LENGTH_LONG).show(); 
       } 
      } 
      else Toast.makeText(getActivity(), "Cancelled bhai cancelled",Toast.LENGTH_LONG).show(); 
     } 
     catch (JSONException e) { 
      // TODO Auto-generated catch block e.printStackTrace(); 
     } 
     return null; 
    } 
    @Override 
    protected void onPostExecute(Void jsonArray) { 
     if(getActivity()!=null){ 
      if(tap.equals("2")){ 
       tap="1"; 
      } 
      next.setVisibility(View.VISIBLE); 
      previous.setVisibility(View.VISIBLE); 
      if(pageNumber>1){ 
       previous.setVisibility(View.VISIBLE); 
      } 
      else { 
       previous.setVisibility(View.GONE); 
      } 
      if(count<10){ 
       next.setVisibility(View.GONE); 
       previous.setVisibility(View.VISIBLE); 
      } 
      adapterD = new DutiesAdpter(getActivity(), duties); 
      lvDuties.setAdapter(adapterD); 
      adapterD.notifyDataSetChanged(); 
      lvDuties.setEmptyView(getView().findViewById(R.id.emptyElementD)); 
     } 
     else{ 
      gtask2.cancel(true); 
      gtask.cancel(true); 
     } 
    } 
} 

Трассировка стека:

04-24 17:14:11.325: E/AndroidRuntime(8432): FATAL EXCEPTION: main 
04-24 17:14:11.325: E/AndroidRuntime(8432): java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. [in ListView(2131099863, class com.example.driverapp.PullToRefreshListView) with Adapter(class android.widget.HeaderViewListAdapter)] 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.ListView.layoutChildren(ListView.java:1548) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.AbsListView.onLayout(AbsListView.java:2037) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.View.layout(View.java:14118) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewGroup.layout(ViewGroup.java:4467) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.View.layout(View.java:14118) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewGroup.layout(ViewGroup.java:4467) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1670) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1528) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1441) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.View.layout(View.java:14118) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewGroup.layout(ViewGroup.java:4467) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.View.layout(View.java:14118) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewGroup.layout(ViewGroup.java:4467) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.support.v4.view.ViewPager.onLayout(ViewPager.java:1594) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.View.layout(View.java:14118) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewGroup.layout(ViewGroup.java:4467) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1670) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1528) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1441) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.View.layout(View.java:14118) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewGroup.layout(ViewGroup.java:4467) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.View.layout(View.java:14118) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewGroup.layout(ViewGroup.java:4467) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1670) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1528) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.LinearLayout.onLayout(LinearLayout.java:1441) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.View.layout(View.java:14118) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewGroup.layout(ViewGroup.java:4467) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.widget.FrameLayout.onLayout(FrameLayout.java:448) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.View.layout(View.java:14118) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewGroup.layout(ViewGroup.java:4467) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2183) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1947) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1139) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4872) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.Choreographer$CallbackRecord.run(Choreographer.java:776) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.Choreographer.doCallbacks(Choreographer.java:579) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.Choreographer.doFrame(Choreographer.java:548) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:762) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.os.Handler.handleCallback(Handler.java:800) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.os.Handler.dispatchMessage(Handler.java:100) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.os.Looper.loop(Looper.java:194) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at android.app.ActivityThread.main(ActivityThread.java:5371) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at java.lang.reflect.Method.invokeNative(Native Method) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at java.lang.reflect.Method.invoke(Method.java:525) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 
04-24 17:14:11.325: E/AndroidRuntime(8432):  at dalvik.system.NativeStart.main(Native Method) 

пожалуйста Помогите :)

Answer 1

Установить адаптер в список, в котором вы инициализировали свой список, а не в фоновом режиме. Всякий раз, когда ваш набор данных изменяется, обновите адаптер с помощью notifyDataSetChanged() в фоновом потоке.

Answer 2

Попробуйте добавить это. Его следует вызывать из основного потока.

runOnUiThread(new Runnable() { 

    @Override 
    public void run() { 
    lvDuties.setAdapter(adapterD); 
    adapterD.notifyDataSetChanged(); 
    } 
});