我想把数据从服务器解析到 spinner 中。现在我想从spinner中删除一些值。

JSONObject taxes = returnTaxlist.getJSONObject(TAG_TAXES);
        Object tax ;
        if (taxes.optJSONArray("tax") != null){
                //The result isn't null so it is a JSONArray
                tax = taxes.optJSONArray("tax");
                }
                else
                {
                //The result is null so it isn't a JSONArray
                tax = taxes.optJSONObject("tax");
                }
                if (tax instanceof JSONObject){
                // The object is a JSONObject
                    tax =  taxes.getJSONObject(TAG_TAX);
                }
                    else
                     {
                // The object is a JSONArray
                   tax = taxes.getJSONArray(TAG_TAX);
                    mytaxList = new ArrayList<TaxList>();
                    for(int i = 0; i <=((JSONArray)tax).length(); i++)
                         {
                        if(i==0){
                            TaxList iTaxClass = new TaxList();
                             iTaxClass.setTaxId("");
                             iTaxClass.setTaxName("--Select--");
                             iTaxClass.setTaxType("");
                             iTaxClass.setTaxvalue("");
                             mytaxList.add(iTaxClass);
                           continue;
                      }
                         JSONObject taxlist = ((JSONArray)tax).getJSONObject(i-1);
                          TaxList iTaxClass = new TaxList();

                               //***** Storing each JSON item in variable
                         iTaxClass.setTaxId(taxlist.getString(TAG_TAX_ID));
                         iTaxClass.setTaxName(taxlist.getString(TAG_TAX_NAME));
                         iTaxClass.setTaxType(taxlist.getString(TAG_TAX_TYPE));
                         iTaxClass.setTaxvalue(taxlist.getString(TAG_TAX_VALUE));

                         mytaxList.add(iTaxClass);
                      } 
                          tax1 = (Spinner)findViewById(R.id.item1);
                            tax1.setAdapter(new TaxListAdapter(mytaxList,this));

                            tax1.setOnItemSelectedListener(new Spinner.OnItemSelectedListener() {

                             public void onItemSelected(AdapterView<?> parent, View selectedItemView, int position, long id) 
                             {
                                    TaxListAdapter taxlistvalue = (TaxListAdapter)parent.getAdapter();
                                    taxlistvalue.getItemId(position);

                        }
                        public void onNothingSelected(AdapterView<?> arg0) {

                        }
                    });

taxList 中包含所有的值。现在我想检查 TaxType 是否删除了 spinner 中的 TaxName 和TaxValue 类型。事实上我不想在 spinner 中显示cound type tax。
我想从 ArrayList mytaxList 中把compound type tax 删除。 如何实现呢？