Dialog kemajuan tidak muncul

Saya memiliki dua pemintal, satu bernama masakan dan area lainnya. Saya memanggil Thetask().execute baru pada beban aktivitas dengan "init" sebagai argumen. Dan pemintal harus diatur dari layanan web dengan masakan yang tersedia dan daftar area. (metode untuk itu tidak termasuk di sini). Dan awalnya pemintal akan memilih "Semua" sehingga tampilan daftar "daftar restoran" harus memiliki semua restoran. Dan ketika pengguna mengubah masakan atau area dari spinners, tampilan daftar restoran harus diperbarui dengan dialog kemajuan yang telah ditampilkan. Sekarang masalah saya adalah semua kode berfungsi tetapi dialog kemajuan mulai ditampilkan setelah tampilan daftar diisi dan dialog kemajuan tidak pernah berhenti sampai tombol kembali ditekan. Solusi apa pun untuk ini akan sangat membantu. Terima kasih sebelumnya.

kelas publik Thetask memperluas AsyncTask {

     String flagdopost="",x,y;       
     @Override 
     public void onPreExecute() 
     {   
        pg =new ProgressDialog(Restaurantlistdisplay.this);
        pg.setMessage("fetching info....");
        pg.setIndeterminate(true);
        pg.setCancelable(true);
        Log.i("inside preexecute","in pre execute");
        pg.show();

     }   

     public Void doInBackground(String... params)
     {          
        if(params[0].equalsIgnoreCase("init"))
        {
            tempcuisinenamelist = getCuisines();    
            tempcuisinenamelist.add(0,"All");

            tempareanamelist=getAreanames(cid, sid, cityid);
            tempareanamelist.add(0,"All");

            flagdopost="init";  
            Log.i("inside doinbackground 1st",flagdopost);
        }

        else if(params[0].equalsIgnoreCase(""))
        {
            firequery();
            flagdopost="itemselected";
            Log.i("inside doinbackground 2nd",flagdopost);
        }
        else if(params[0].equalsIgnoreCase("itemclick"))
        {
            //sendid=getRestaurantId(params[1],params[2]);  
            x=params[1];
            y=params[2];
            Log.i("in do in backgroung idforbundle is", Integer.toString(sendid));
            flagdopost="itemclicked";
        }
        return null;                     
     } 

    public void onPostExecute(Void result)
     {       
        if(flagdopost.equalsIgnoreCase("init"))
        {
            ArrayAdapter<String> adaptercuisine=new                           ArrayAdapter<String> (Restaurantlistdisplay.this,android.R.layout.simple_spinner_item,tempcuisinenamelist);
            adaptercuisine.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

            ArrayAdapter<String> adapterarea=new ArrayAdapter<String>(Restaurantlistdisplay.this,android.R.layout.simple_spinner_item,tempareanamelist);
            adapterarea.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

            area.setAdapter(adapterarea); 
            area.setSelection(0);
            area.setOnItemSelectedListener(Restaurantlistdisplay.this);
            cuisine.setAdapter(adaptercuisine); 
            cuisine.setSelection(0);
            cuisine.setOnItemSelectedListener(Restaurantlistdisplay.this);

        }
        else if(flagdopost.equalsIgnoreCase("itemselected"))
        {
            getResult(str);
            customlist.clear();
            populateReslist();
            //Log.i("inside 1st firequery","list populated"+customlist.toString());

            restaurant.invalidateViews();
            restaurant.setAdapter(new SimpleAdapter(Restaurantlistdisplay.this,customlist,R.layout.customlistrow,new String[] {"Restaurant Name","Area Name"},
                    new int[] {R.id.tvresname,R.id.tvareaname})
                    {
                   @Override      
                   public View getView(int position, View convertView,ViewGroup parent)
                   {           
                       View view =super.getView(position, convertView, parent); 
                       return view;       
                   }  
                 });

         }
        else if(flagdopost.equalsIgnoreCase("itemclicked"))
        {               
            sendid=getRestaurantId(x,y);
            Bundle bundle=new Bundle();
            bundle.putInt("locid",sendid);
            Toast.makeText(getBaseContext(), "locId in dopost new one"+sendid, 10).show();

            Intent resdetail = new Intent(Restaurantlistdisplay.this,Restaurantdetail.class);
            resdetail.putExtras(bundle);
            startActivity(resdetail);

        }   
         pg.dismiss();
     }  
 }

public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2,
        long arg3) 
{
    switch(arg0.getId())
    {
        case R.id.spncuisine:                                           asynctaskflag="";
                if(cuisine.getSelectedItem().toString()!="All")
                                {
                            cuisineval=cuisine.getSelectedItem().toString();
                        }
                else
                {
                    cuisineval="*";
                }
                new Thetask().execute(asynctaskflag,null,null);
                break;

        case R.id.spnarea:                  
                asynctaskflag="";
                if(area.getSelectedItem().toString()!="All")
                {
                    areaval=area.getSelectedItem().toString();
                }
                else
                {
                    areaval="*";
                }
                new Thetask().execute(asynctaskflag,null,null);
                break;
    }   

}
public void onNothingSelected(AdapterView<?> arg0) {
    // TODO Auto-generated method stub

}
}

//Kode getCuisines() di bawah ini sesuai permintaan Anda semua. C jika itu dapat membantu

public List<String> getCuisines()
 {
        String list = null;
        cuisinelist=new ArrayList<String>();
    try
    {
       SoapObject request = new SoapObject(NAMESPACE, METHOD_NAME); 
       request.addProperty("str", //here goes query to fetch data from table of </br>cuisines);   
       SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
    envelope.setOutputSoapObject(request);      
    HttpTransportSE aht = new HttpTransportSE(URL);     
    aht.debug = true;
    aht.call(SOAP_ACTION, envelope);
    SoapPrimitive results = (SoapPrimitive)envelope.getResponse();
        list=results.toString();
      }
      catch (SocketException ex)
      {  
    ex.printStackTrace();
      }
     catch (Exception e)
     {         
    e.printStackTrace(); 
      } 
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setNamespaceAware(true);
try
{
    DocumentBuilder builder = factory.newDocumentBuilder();
    Document dom = builder.parse(new InputSource(new StringReader(list))); 
    Element root = dom.getDocumentElement();
    NodeList items = root.getElementsByTagName("row");
    for (int i=0;i<items.getLength();i++)
    {
       Node item = items.item(i);
       NodeList properties = item.getChildNodes();
       for (int j=0;j<properties.getLength();j++)
       {
            Node property = properties.item(j);
        String name = property.getNodeName();
        if (name.equalsIgnoreCase("typeName"))
        {
                   cuisinelist.add(property.getFirstChild().getNodeValue());
        }                       
        }
    }
    return cuisinelist;         
  }
  catch (Exception e) 
  {
    throw new RuntimeException(e);
      } 

}