Last項目在清單<Object>在RecyclerView項目

Question

的特定文本視圖中重複我正在使用對象類（public static List<Restaurant> res;）來設置我從服務器獲取json數據的數據。該應用程序的流程如下。

步驟1：（MainActivity.class）從服務器

獲取數據

步驟2：

所有JSON數據設置成List<Object>類。並宣佈List<Object>在MainActivity一個公共靜態

第3步：

在這裏，我需要填充List<Object>類值到Recyclerview.Due聲明爲公共靜態，我稱這種直接而設定以MainActivity作爲父項的片段中的適配器。

adapter = new CardAdapter(MainActivity.res, context); 
    recyclerView.setAdapter(adapter); 
    adapter.notifyDataSetChanged(); 

但問題是，在填充RecyclerView，我只得到重複的高達List<Restaurant>大小的最後一個項目。

MainActivity（的AsyncTask方法）：

private class TabNameSync extends AsyncTask<Void, Void, String> { 
     String BASE_URL = Config.DATA_URL; 
     ProgressDialog nDialog; 
     HashMap<String, String> hashMapPost = new HashMap<>(); 

     @Override 
     protected void onPreExecute() { 
      nDialog = new ProgressDialog(MainActivity.this); 
      nDialog.setMessage("Loading..."); 
      nDialog.setIndeterminate(true); 
      nDialog.setCancelable(true); 
      nDialog.show(); 
     } 

     @Override 

     protected String doInBackground(Void... params) { 

      HttpURLConnection con = null; 
      InputStream is = null; 

      StringBuffer buffer; 
      String bufferVariable = null; 

      hashMapPost.put("tag", "onload"); 
      hashMapPost.put("lat", "18.71851808"); 
      hashMapPost.put("log", "97.74131474"); 

      try { 
       con = (HttpURLConnection) (new URL(BASE_URL)).openConnection(); 
       con.setDoInput(true); 
       con.setDoOutput(true); 
       con.setRequestMethod("POST"); 
       con.connect(); 
       OutputStream os = con.getOutputStream(); 
       BufferedWriter writer = new BufferedWriter(
         new OutputStreamWriter(os, "UTF-8")); 
       writer.write(commonUtil.getPostDataString(hashMapPost)); 

       writer.flush(); 
       writer.close(); 
       os.close(); 

       buffer = new StringBuffer(); 
       int responseCode = con.getResponseCode(); 
       if (responseCode == HttpsURLConnection.HTTP_OK) { 
        is = con.getInputStream(); 
        BufferedReader br = new BufferedReader(new InputStreamReader(is)); 
        String line; 
        while ((line = br.readLine()) != null) 
         buffer.append(line).append("\r\n"); 
        is.close(); 
       } 
       con.disconnect(); 
       bufferVariable = buffer.toString(); 
       return buffer.toString(); 
      } catch (Throwable t) { 
       t.printStackTrace(); 
      } finally { 
       try { 
        if (is != null) { 
         is.close(); 
        } 
       } catch (Throwable t) { 
       } 
       try { 
        if (con != null) { 
         con.disconnect(); 
        } 
       } catch (Throwable t) { 
       } 
       if (!bufferVariable.equalsIgnoreCase(" ")) { 
        try { 

         JSONArray jArray = new JSONArray(bufferVariable); 
         int jsonLength = jArray.length(); 

         for (int j = 0; j < jArray.length(); j++) { 

          Restaurant_Beam item; 
          JSONObject jsonObj = jArray.getJSONObject(j); 
          item = new Restaurant_Beam(); 
          item.setIG_LIKECOUNT(jsonObj.getInt(Config.LIKE)); 
          item.setIG_DELIVERY(jsonObj.getInt(Config.DELIVERYTIME)); 
          item.setIG_PRODUCTID(jsonObj.getString(Config.PRODUCTID)); 
          item.setIG_SALES_PRICE(jsonObj.getString(Config.SALESPRICE)); 
          item.setIG_VOUCHER_ID(jsonObj.getString(Config.VOUCHERID)); 
          item.setIG_VOUCHEROFFER(jsonObj.getString(Config.VOUCHEROFFER)); 
          item.setIG_CATEGORY_ID(jsonObj.getString(Config.CATEID)); 
          item.setIG_IMAGEURL(jsonObj.getString(Config.IMGID)); 
          item.setIG_PRODUCTNAME(jsonObj.getString(Config.PRODUCTNAME)); 
          item.setIG_CATEGORYNAME(jsonObj.getString(Config.CATENAME)); 

          Restaurant.add(item); 

          listSuperHeroes = Restaurant; 

          strTabName = jsonObj.getString("Cate Name"); 
          String strProductID = jsonObj.getString("Pro_Id"); 
          String strProductName = jsonObj.getString("Product_Name"); 
          String strSalesPrice = jsonObj.getString("Sales Price"); 
          String strVoucherId = jsonObj.getString("Voucher Id"); 
          String strVoucherOffer = jsonObj.getString("voucher Offer"); 
          String strCatId = jsonObj.getString("Cat Id"); 
          String strImage = jsonObj.getString("Image"); 
          String strLikes = jsonObj.getString("likes"); 
          String strDeliveryTime = jsonObj.getString("deliverytime"); 
          strDbName = jsonObj.getString("dbname"); 


          tabName.add(strTabName); 

          DbName.add(strDbName); 

          if (jsonLength == jArray.length()) { 
           JSONObject jsonObj2 = jArray.getJSONObject(jsonLength - 1); 
           Config.IMAGE_URL = jsonObj2.getString("url"); 
          } 
         } 


        } catch (JSONException e) { 
         e.printStackTrace(); 
        } 
       } 
      } 
      return null; 
     } 

     @Override 
     protected void onPostExecute(String result) { 
      super.onPostExecute(result); 

      final TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs); 
      tabLayout.setTabMode(TabLayout.MODE_SCROLLABLE); 

      values = new ArrayList<String>(); 
      values = tabName; 
      HashSet<String> hashSet = new HashSet<String>(); 
      hashSet.addAll(values); 
      values.clear(); 
      values.addAll(hashSet); 

      nDialog.dismiss(); 

      // setTime_ToSlide(); 
      viewPager.setAdapter(new ViewPagerAdapter(getSupportFragmentManager())); 
      tabLayout.post(new Runnable() { 
       @Override 
       public void run() { 
        tabLayout.setupWithViewPager(viewPager); 
       } 
      }); 
      SharedPreferences.Editor editor = pref.edit(); 
      editor.putString("FIRST_TAB", values.get(1)); 
      editor.putString("SECOND_TAB", values.get(0)); 
      editor.putString("THIRD_TAB", values.get(2)); 
      editor.commit(); 

     } 
    } 

這裏只重複RED rounderd數據和其他數據相關的正確的數據。

我也發佈了我的代碼too.Please檢查它。與CardAdapter構造

Answer 1

發送列表對象

new CardAdapter(MainActivity.res, context, List<object> abc); 

然後使用它。