JsonはRunハンドラに動的に負荷をかけるDuration

Question

私はサーバーからjsonをリクエストしてハンドラの持続時間50000で処理しています。 いつかはまだロードされていないjsonをロードしていました。 私はJsonロードに対してHandlerを動的に実行します。すべてのJSONがロードされた場合、私は0

public void onLoadMore() { 
     Log.d("MainActivity_","onLoadMore"); 
     mAdapter.setProgressMore(true); 
     new Handler().postDelayed(new Runnable() { 
      @Override 
      public void run() { 
       itemList.clear(); 
       mAdapter.setProgressMore(false); 
       int start = mAdapter.getItemCount(); 
       final int end = start + 5; 


       RequestQueue queue = Volley.newRequestQueue(context); 
       HttpsTrustManager.allowAllSSL(); 
       final String url = "https://www.iknow.com.kh/api/business/get_business_home_latest.php"; 

       StringRequest stringRequest = new StringRequest(context, Request.Method.GET,url, new Response.Listener<String>() { 
        @Override 
        public void onResponse(String response) { 
         Log.d("JsonBusiness ", response); 
         JSONObject business; 
         JSONObject data; 

         JSONArray operator; 
         try { 
          data = new JSONObject(response); 
          business = data.getJSONObject("business"); 
          operator = business.getJSONArray("content"); 
          for (int i = 0; i < operator.length(); i++) { 
           JSONObject each_report = new JSONObject(operator.get(i).toString()); 
           Log.d("cat _ ID:", each_report.getString("business_name")); 
           String desc, phone, subaddress, category, businessname; 

           if(each_report.getString("business_name").length()>25){ 
            businessname=each_report.getString("business_name").substring(0,25)+"..."; 
           }else { 
            businessname=each_report.getString("business_name"); 
           } 

           if(each_report.getString("description").length()>35){ 
            desc=each_report.getString("description").substring(0,35)+"..."; 
           }else 
           { 
            desc=each_report.getString("description")+"..."; 
           } 

           if(each_report.getString("phone").length()>35){ 
            phone=each_report.getString("phone").substring(0, 35)+"..."; 
           }else { 
            phone=each_report.getString("phone"); 
           } 

           String address=each_report.getString("house") + ", " + each_report.getString("street") + ", " + each_report.getString("pro"); 
           if(address.length()>35){ 
            subaddress=address.substring(0,35)+"..."; 
           }else { 
            subaddress=address; 
           } 
           category="Category: " + each_report.getString("cate_name"); 

           itemList.add(new BusinessEntity(each_report.getString("first_letter"), businessname, desc ,phone,subaddress,category,each_report.getString("bussID"),each_report.getString("CID"),each_report.getString("PID"))); 
//      bcontractor.add(b_list); 
          } 
          mAdapter.addAll(itemList); 
         } catch (JSONException e) { 
          e.printStackTrace(); 
         } 
         mAdapter.notifyDataSetChanged(); 
        } 

       }, new Response.ErrorListener() { 
        @Override 
        public void onErrorResponse(VolleyError volleyError) { 
         Toast.makeText(context, "Login Error", Toast.LENGTH_SHORT).show(); 
        } 
       }){ 
        @Override 
        public String getUrl() { 
         Map<String, String> params = new HashMap<>(); 
         params.put("api_key", "iknow@ApIKeY"); 
         params.put("search_letter", ""); 
         params.put("offset", ""+end); 
         params.put("limit", "15"); 

         Log.d("Url with Param___", SetUrl(url, params)); 
         return SetUrl(url, params); 
        } 
       }; 
       queue.add(stringRequest); 


//    for (int i = start + 1; i <= end; i++) { 
//     itemList.add(new BusinessEntity("F","Item " + i,"","","","","","","")); 
//    } 
       mAdapter.addItemMore(itemList); 
       mAdapter.setMoreLoading(false); 
      } 
     },50000); 
    } 

Answer 1

に等しい実行時間をしたいあなたはimmidiatelyあなたのタスクを実行することができ、データをロードした後、あなたが別の適切な遅延を設定することができ、初めて

// Create handler 
Handler mHandler = new Handler(); 

// Create Runnable task 
Runnable runnable = new Runnable() { 
    @Override 
    public void run() { 
     ... 
     StringRequest stringRequest = new StringRequest(context, Request.Method.GET,url, new Response.Listener<String>() { 
      @Override 
      public void onResponse(String response) { 
       ... 
       mAdapter.notifyDataSetChanged(); 

       // data has been loaded, call onLoadMore again 
       onLoadMore(); 
      } 

     }); 
     queue.add(stringRequest); 
     ... 
    } 
}; 

public void onLoadMore() { 
    Log.d("MainActivity_","onLoadMore"); 
    mAdapter.setProgressMore(true); 

    // Reducing the time to 2 seconds. Just an arbitrary value 
    mHandler.postDelayed(runnable, 2000); 
} 

Answer 2

これを試してみてくださいしばらくしてから実行してください。以下のコードを参照してください

// Create handler 
Handler mHandler = new Handler(); 

// Create Runnable task 
Runnable runnable = new Runnable() { 
    @Override 
    public void run() { 
     ... 
      } 

     }); 
     queue.add(stringRequest); 

     mAdapter.addItemMore(itemList); 
     mAdapter.setMoreLoading(false); 
     mHandler.postDelayed(runnable, 4000); // now register to run after 4 secs 
    } 
}; 

public void onLoadMore() { 
    Log.d("MainActivity_","onLoadMore"); 
    mAdapter.setProgressMore(true); 

    // Run immediately at the start 
    mHandler.post(runnable); 
}