Java.lang.IllegalArgumentException: view not bound to window manager

I am using the following code. When I change the orientation from portrait to landscape, and then back to portrait. it throws an Exception "not bound to the window manager." How to solve this problem. thank.

public class Search_List_Activity extends Activity{
public static String keyword=null, category_get_id;
public static ArrayList<String> type= new ArrayList<String>();
public static ArrayList<String> title= new ArrayList<String>();
public static ArrayList<String> des= new ArrayList<String>();
public static ArrayList<String> manu= new ArrayList<String>();
public static ArrayList<String> urls= new ArrayList<String>();
public static ArrayList<String> image_sm= new ArrayList<String>();
public static ArrayList<String> image_me= new ArrayList<String>();
public static ArrayList<String> image_la= new ArrayList<String>();
public static ArrayList<String> image_ex= new ArrayList<String>();
public static ArrayList<String> rel= new ArrayList<String>();
public static ArrayList<String> id= new ArrayList<String>();
public static ArrayList<String> cat_id= new ArrayList<String>();
public static ArrayList<String> min_price= new ArrayList<String>();
public static ArrayList<String> max_price= new ArrayList<String>();
public static ArrayList<String> stores= new ArrayList<String>();

public static ArrayList<String> offer_sku = new ArrayList<String>();
public static ArrayList<String> offer_detailurl = new ArrayList<String>();
public static ArrayList<String> offer_price = new ArrayList<String>();
public static ArrayList<String> offer_ori_price = new ArrayList<String>();
public static ArrayList<String> offer_markdownperct = new ArrayList<String>();
public static ArrayList<String> offer_shipcost = new ArrayList<String>();
public static ArrayList<String> offer_tax = new ArrayList<String>();
public static ArrayList<String> offer_total_price = new ArrayList<String>();
public static ArrayList<String> offer_bidded = new ArrayList<String>();
public static ArrayList<String> offer_merchant_prod_id = new ArrayList<String>();
public static ArrayList<String> offer_merchant_name = new ArrayList<String>();
public static ArrayList<String> offer_merchant_rating_img = new ArrayList<String>();
public static ArrayList<String> offer_merchant_logo = new ArrayList<String>();
public static ArrayList<String> offer_condition = new ArrayList<String>();
public static ArrayList<String> offer_stock = new ArrayList<String>();
public static ArrayList<String> offer_ship_amt = new ArrayList<String>();
public static ArrayList<String> offer_ship_type = new ArrayList<String>();
public static ArrayList<String> offer_id = new ArrayList<String>();
public static ArrayList<String> offer_cat_id = new ArrayList<String>();
public static ArrayList<String> offer_merchant_id = new ArrayList<String>();
public static ArrayList<String> category_id = new ArrayList<String>();
public static ArrayList<String> category_name = new ArrayList<String>();
public static ArrayList<String> offer_rating = new ArrayList<String>();
public static ArrayList<HashMap<String, Object>> mylist;
public static URL url1, url2;
public static JSONObject price;
public static String prod_type;
public static Boolean type_po;
public static Bitmap bmp;
 public static String prod_id;
 public static Boolean cat_flag;
static final int CATEGORIES_PRODUCE_ID = 0;
Dialog dialog_category;
 Bundle bundle;
 SQLiteDatabase db;
// TextView txt_search;
 private String lv_arr[]={"Cell Phone Cases","NCAA Shop","MLB Shop","NBA Shop","NFL Shop","MP3 Player Cases and Skins","iPhone Cases and Skins"};
 //ListView lv;
 public static Boolean flag=true; 
 Boolean flagValue = true;
@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);


     //Getting the resolution of Tablet
    Display display = getWindowManager().getDefaultDisplay();
    int width = display.getWidth();
    int height = display.getHeight();
    System.out.println("Width:"+width);
    System.out.println("Height:"+height);

    //setContentView(R.layout.search_catagories);
        if(width==600 && height==1024)
               {
                   setContentView(R.layout.search_catagories);

                      System.out.println("HIiiiiiiiiiiiiii");


               }
        else{
                    flag = false;
                    setContentView(R.layout.search_categories_ls);
            }

        arraylists_clear();

    TextView txt_search = (TextView)findViewById(R.id.editText1);
    if(flagValue){
    if(SearchRefine.checkflag){
    bundle = getIntent().getExtras();
    keyword = bundle.getString("keyword");
    }
    image_sm.clear();
    title.clear();
    min_price.clear();
     //Opens or Create a database and Table
    db = openOrCreateDatabase("recentsearches1.db",SQLiteDatabase.CREATE_IF_NECESSARY,null);
    db.setVersion(1);
    db.setLocale(Locale.getDefault());
    db.setLockingEnabled(true);



    final String DATA="create table if not exists new_searchtab1("+"id INTEGER PRIMARY KEY AUTOINCREMENT,"+"search TEXT UNIQUE);";
    db.execSQL(DATA);
    //=================End

    ContentValues values = new ContentValues();
       values.put("search", keyword);
       long id1 = db.insert("new_searchtab1", null, values);

       db.close();

    }   
    //ArrayList<HashMap<String, Object>> mylist = new ArrayList<HashMap<String, Object>>();

    final ListView lv = (ListView)findViewById(R.id.search_listView);

    final ProgressDialog dialog = ProgressDialog.show(this, "BIZRATE", 



            "Loading....", true);
            final Handler handler = new Handler() {



               public void handleMessage(Message msg) {


                   //LoadEffAdapter();
                   lv.setAdapter(new EfficientAdapter(Search_List_Activity.this));
                   dialog.dismiss();
                  }
               };



            Thread checkUpdate = new Thread() {  



               public void run() {
            //
            // YOUR LONG CALCULATION (OR OTHER) GOES HERE
            //
                   SearchResult_Json.json_parsing();
                  handler.sendEmptyMessage(0);



                  }
               };
            checkUpdate.start();
    //final SearchResult_Json obj = new SearchResult_Json();
    ImageButton grid_view_btn = (ImageButton)findViewById(R.id.gridview_bttn);


    //Categories button
    Button categories_btn = (Button)findViewById(R.id.categories_bttn);
    categories_btn.setOnClickListener(new View.OnClickListener() {


        public void onClick(View v) {
            // TODO Auto-generated method stub
            Category_Search_Json.Json_parsing();
            showDialog(CATEGORIES_PRODUCE_ID);
        }
    });

    //Refine Button
    Button btn_refine = (Button)findViewById(R.id.refine_bttn);

    btn_refine.setOnClickListener(new View.OnClickListener() {



        public void onClick(View arg0) {


            //showDialog(SearchRefine.DIALOG_PRODUCE_ID);
            // TODO Auto-generated method stub
        Intent intent = new Intent(Search_List_Activity.this,SearchRefine.class);
        intent.putExtra("keyword",keyword);//Loads Refine Search Screen
        startActivity(intent);
        }

    });

    //Grid Button
    grid_view_btn.setOnClickListener(new View.OnClickListener() {

        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            //obj.json_parse();
            Intent intent = new Intent(Search_List_Activity.this,Search_GridView_Activity.class);
            intent.putExtra("keyword", bundle.getString("keyword"));
            startActivity(intent);
        }
    });


    txt_search.setText(keyword);
    keyword = keyword.replaceAll(" ", "+");
    System.out.println("The String:"+keyword);



    lv.setBackgroundColor(Color.WHITE);
    lv.setCacheColorHint(Color.WHITE); 


//List View On item click
    lv.setOnItemClickListener(new OnItemClickListener() {


        public void onItemClick(AdapterView<?> parent,View view,int position,long idddd)
        {

            //To check the offer and products
            if(type.get(position).equals("OFFER"))
            {
                prod_id = offer_id.get(position);
            Intent intent = new Intent(Search_List_Activity.this,Compare_Product_Activity.class);
            intent.putExtra("productType", "SZOID");
            startActivity(intent);
            }
            else
            {

                prod_id = offer_id.get(position);
                Intent intent = new Intent(Search_List_Activity.this,Compare_Product_Activity.class);
                intent.putExtra("productType", "SZPID");
                startActivity(intent);
            }

        }
    });
}



private void arraylists_clear() {
    // TODO Auto-generated method stub
    type.clear();
    image_sm.clear();
    title.clear();
    min_price.clear();
    des.clear();
    manu.clear();
    urls.clear();
    image_me.clear();
    image_la.clear();
    image_ex.clear();
    rel.clear();
    id.clear();
    cat_id.clear();
    min_price.clear();
    max_price.clear();
    stores.clear();
    offer_sku.clear();
    offer_detailurl.clear();
    offer_price.clear();
    offer_ori_price.clear();
    offer_markdownperct.clear();
    offer_shipcost.clear();
    offer_tax.clear();
    offer_total_price.clear();
    offer_bidded.clear();
    offer_merchant_prod_id.clear();
    offer_merchant_name.clear();
    offer_merchant_rating_img.clear();
    offer_merchant_logo.clear();
    offer_condition.clear();
    offer_stock.clear();
    offer_ship_amt.clear();
    offer_ship_type.clear();
    offer_id.clear();
    offer_cat_id.clear();
    offer_merchant_id.clear();
    category_id.clear();
    category_name.clear();
    offer_rating.clear();


}


/*protected void LoadEffAdapter() {
    // TODO Auto-generated method stub
    lv.setAdapter(new EfficientAdapter(this));

}
*/

//Loading of Images, title, min_price

//Efficient Adapter
public static class EfficientAdapter extends BaseAdapter {
    private LayoutInflater mInflater;

    public EfficientAdapter(Context context) {
        mInflater = LayoutInflater.from(context);

    }

    public int getCount() {
        return image_sm.size();
    }


    public Object getItem(int position) {
        return position;
    }

    public long getItemId(int position) {
        return position;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        try {

            url1 = new URL(image_sm.get(position));
            url2 = new URL(image_me.get(position));
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }


        try {


            if(flag){
            bmp = BitmapFactory.decodeStream(url1.openConnection().getInputStream());
            }
            else{
                bmp = BitmapFactory.decodeStream(url2.openConnection().getInputStream());
            }
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        //holder.img.setImageBitmap(bmp);
        if (convertView == null) {


            if(flag){
            convertView = mInflater.inflate( R.layout.search_catagory_row, null);
            System.out.println("WITH PORTRAITTT");
            }
            else{
                convertView = mInflater.inflate( R.layout.search_category_row_land, null);
                System.out.println("WITH LANDSCAPEEE");
            }
            holder = new ViewHolder();
            holder.text = (TextView) convertView
            .findViewById(R.id.search_text);
            holder.text2 = (TextView) convertView
            .findViewById(R.id.text_view_2);
            holder.img = (ImageView) convertView.findViewById(R.id.images);

            convertView.setTag(holder);

        } else {

            holder = (ViewHolder) convertView.getTag();
        }


        holder.text.setText(title.get(position));
        holder.text2.setText(min_price.get(position));
        holder.img.setImageBitmap(bmp);
        final int pos = position;


        return convertView;
    }

    static class ViewHolder {
        TextView text;
        TextView text2;
        ImageView img;

    }
}


 @Override
    protected Dialog onCreateDialog(int id) {

        switch(id) {


       case CATEGORIES_PRODUCE_ID:
          dialog_category = new Dialog(this);
         dialog_category.setContentView(R.layout.category_dialog);
            ListView category_list= (ListView)dialog_category.findViewById(R.id.list_cat);
           category_list.setBackgroundColor(Color.WHITE);
          category_list.setCacheColorHint(Color.WHITE);
            category_list.setAdapter(new ArrayAdapter<String>(this,R.layout.cat_row, R.id.label , category_name));

            // List view click

           category_list.setOnItemClickListener(new OnItemClickListener() {


                public void onItemClick(AdapterView<?> parent,View view,int position,long idddd)
                {

                    //To check the offer and products
                    cat_flag=true;
                    SearchRefine.checkflag=false;
                    Intent intent = new Intent(Search_List_Activity.this,Search_List_Activity.class);
                    intent.putExtra("keyword",keyword);
                    category_get_id=category_id.get(position);
                    System.out.println("CATEGORY NAME-->"+category_get_id);
                    startActivity(intent);

                }
            });

           return dialog_category;  

        }
        return null;
    }    
}

This gives the following exception.

06-07 16:39:12.660: ERROR/AndroidRuntime(986): FATAL EXCEPTION: main
06-07 16:39:12.660: ERROR/AndroidRuntime(986): java.lang.IllegalArgumentException: View not attached to window manager
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at android.view.WindowManagerImpl.findViewLocked(WindowManagerImpl.java:355)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:200)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at android.view.Window$LocalWindowManager.removeView(Window.java:432)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at android.app.Dialog.dismissDialog(Dialog.java:278)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at android.app.Dialog.access$000(Dialog.java:71)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at android.app.Dialog$1.run(Dialog.java:111)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at android.app.Dialog.dismiss(Dialog.java:268)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at org.bizrate.tablet.Search_List_Activity$1.handleMessage(Search_List_Activity.java:174)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at android.os.Looper.loop(Looper.java:123) 
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at android.app.ActivityThread.main(ActivityThread.java:4627)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at java.lang.reflect.Method.invokeNative(Native Method)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at java.lang.reflect.Method.invoke(Method.java:521)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
06-07 16:39:12.660: ERROR/AndroidRuntime(986):     at dalvik.system.NativeStart.main(Native Method)

Hey. All I want to add. One more thing here when I remove the progress bar code from this .it code works fine. But I have to implement with a progress bar. please, help. Thank you all.