title: Cannot declare dynamic buttons in existing code
body: <p>When I declare a gridview in the class below, I get a range of errors.</p>
  
  <pre><code>class LoadAllProducts extends Activity //get call on dynamic btn action 
  {
      public void onCreate() {
          System.out.println("I have enterd in external class");
          // ***GridView gridView3 = (GridView) findViewById(R.id.gridview3);***//cant declare getting error  
          ArrayList mButtons3 = new ArrayList(); //to print button dynamically on gridview 
          Button cb3; //=new Button(this); if do so getting error 
          JSONObject json2 = null;
          json2 = jParser.makeHttpRequest(url_all_products, "GET", params);
  
          //  System.out.println("success to get json object for all products/t"+json2);// getting data from php an mysql database   
  
          JSONArray products2 = null;
          String[] Itemname = null;
          String[] rcatacode = null;
          try {
              int success2 = json2.getInt(TAG_ALLPRODUCT_SUCCESS);
              products2 = json2.getJSONArray(TAG_ALLPRODUCT_PRODUCTS);
  
              Itemname = new String[products2.length()];
              rcatacode = new String[products2.length()];
              if (success2 == 1) {
                  cb3 = new Button(this);
                  for (int i = 0; i &lt; products2.length(); i++) {
                      JSONObject c = products2.getJSONObject(i);
                      // Storing each json item in variable 
                      String itemcode = c.getString(TAG_ALLPRODUCT_MCODE); //to store data from database 
                      String itemname = c.getString(TAG_ALLPRODUCT_ITEM_NAME);
                      String item_rate = c.getString(TAG_ALLPRODUCT_RATE);
                      String r_cata = c.getString(TAG_ALLPRODUCT_RCATA);
                      Itemname[i] = itemname;
                      rcatacode[i] = r_cata;
  
                  }
              }
          } // try closed 
          catch (JSONException e) {
              e.printStackTrace();
          }
  
          for (int i = 0; i &lt; 20; i++) {
              // Button b=new Button(this); //getting error on here also 
  
              System.out.println(Itemname[i]);
          }
      }
  }
  </code></pre>