このコードをGsonに書き込む方法は？

Question

このコードでは、JSONを解析し、ArrayListを検索可能なスピナーに表示しています。このコードは完全に機能しますが、大きなJSONを解析するときは、モバイルデータに時間とメモリが必要です。

大規模なJSONを解析するための優れたアイデアを提案できますか、またはGsonと解析して検索可能なスピナーに読み込む方法を教えてもらえますか？

try { 
     if (response.has("products_data")) { 
      jsonArray = new JSONArray(); 
       jsonArray = response.getJSONArray("products_data"); 
      for (int t = 0; t < jsonArray.length(); t++) { 
       object = jsonArray.getJSONObject(t); 
       retailer_id = object.getString("retailer_id"); 
       retailer_name = object.getString("retailer_name"); 
       product_code = object.getString("product_code"); 
       product_name = object.getString("product_name"); 
       pro_packing = object.getString("pro_packing"); 
       pro_company=object.getString("pro_company"); 
       pro_generic_code=object.getString("pro_generic_code"); 
       pro_generic_name=object.getString("pro_generic_name"); 
       pro_stock = object.getInt("product_stock"); 
       product_MRP=object.getDouble("product_MRP"); 
       p = new Product(); 
       p.setRetailer_id(retailer_id); 
       p.setRetailer_name(retailer_name); 
       p.setProduct_code(product_code); 
       p.setProduct_name(product_name); 
       p.setPro_packing(pro_packing); 
       p.setPro_company(pro_company); 
       p.setPro_generic_code(pro_generic_code); 
       p.setPro_generic_name(pro_generic_name); 
       p.setPro_stock(pro_stock); 
       p.setProduct_MRP(product_MRP); 
       productlist.add(p); 
       } 
       progressDialog.dismiss(); 

     final List<String> pname = new ArrayList<String>(); 
     final List<String> pcode = new ArrayList<String>(); 
     pname.clear(); 
     pname.add(0,"Select Products"); 
     for (int i = 0; i < productlist.size(); i++) { 
             pname.add(productlist.get(i).getProduct_name()); 
           } 
       // Creating adapter for spinner 
     final ArrayAdapter<String> spinnerAdapter = new ArrayAdapter<String>(getApplicationContext(),R.layout.custom_spinnertxt, pname); 

           spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); 
      runOnUiThread(new Runnable() { 
        @Override 
       public void run() { 
         // attaching data adapter to spinner 

    autoCompleteTextView.setAdapter(spinnerAdapter); 
             autoCompleteTextView.setSelection(0); 
            } 
           }); 
            autoCompleteTextView.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() { 
      @Override 
     public void onItemSelected(AdapterView<?> parent, View view, int i, long id) { 
      if(i>0) { 
     p_id = productlist.get(i - 1).getProduct_code(); 
     p_stock = productlist.get(i - 1).getPro_stock(); 
     ppack = productlist.get(i - 1).getPro_packing(); 
     pcomp = productlist.get(i - 1).getPro_company(); 
     mrp = productlist.get(i - 1).getProduct_MRP(); 
     pseller = productlist.get(i - 1).getRetailer_name(); 
     // Log.i("pID:", p_id); 
     //Log.i("pStock:", String.valueOf(p_stock)); 
     //Log.i("PMRP:", String.valueOf(mrp)); 
             } 
            } 

            @Override 
    public void onNothingSelected(AdapterView<?> parent) { 

            } 
           }); 

          } 

         } 

これは私のJSONレスポンスです： ：

"products_data": [ 
{ 
    "retailer_id": "mum0022", 
    "retailer_name": "SAKTI MEDICO", 
    "product_code": "6474", 
    "product_name": "EPISOFT CLEANSING LOTION", 
    "pro_packing": "125ML", 
    "pro_company": "GLENMARK-GRACEWELLSPECIALITY", 
    "pro_generic_code": "", 
    "pro_generic_name": "", 
    "product_stock": "7", 
    "product_MRP": "209" 
}, 
{ 
    "retailer_id": "mum0022", 
    "retailer_name": "SAKTI MEDICO", 
    "product_code": "8403", 
    "product_name": "ELOVERA LOTION 150ML (BIG)", 
    "pro_packing": "150ML", 
    "pro_company": "GLENMARK (DERMAX)", 
    "pro_generic_code": "", 
    "pro_generic_name": "", 
    "product_stock": "3", 
    "product_MRP": "324.5" 
}, 
... 

Answer 1

が

gson.fromJson(json, Products_data.class);