سوال در مورد پروژه Note استاد

من خیلی خیلی وقت پیش اینجوری حلش کردم. ولی اینم بگم از نظر بهینه بودن و ... تضمینی ندارم چرا که خیلی وقت پیش اینجوریش کردم.

public class Commands extends AsyncTask<Void, Void, Boolean> {

	

	LinearLayout layout = (LinearLayout) NewsFragment.rootView.findViewById(R.id.progressbar_view);
	ListView lstContent  = (ListView) NewsFragment.rootView.findViewById(R.id.lstContent);
	public static void readData() {
		
		
		new Commands().execute();
		

	}

    public static  void updateData(final ArrayList<NameValuePair> params){
    	Thread thread = new Thread(new Runnable() {
			
			@Override
			public void run() {
				WebService.readUrl("null",params);
				
			}
		});
    	 
    	thread.start();
    } 
    public static  void removeData(final ArrayList<NameValuePair> params){
    	Thread thread = new Thread(new Runnable() {
			
			@Override
			public void run() {
			   	 WebService.readUrl("null",params);
				
			}
		});
    		thread.start();
   	
   }

	public static void insertData(final ArrayList<NameValuePair> params) {
    	Thread thread = new Thread(new Runnable() {
			
			@Override
			public void run() {
				WebService.readUrl("null",params);
				
			}
		});

		thread.start();
	}
	
	@Override
	protected Boolean doInBackground(Void... params) {
		DoRead();
		return true;
	}
	
	@Override
	protected void onPreExecute() {
		lstContent.setVisibility(View.INVISIBLE);
		layout.setVisibility(View.VISIBLE);
		super.onPreExecute();
		 
	}
	@Override
	protected void onPostExecute(Boolean result) {
		lstContent.setVisibility(View.VISIBLE);
		layout.setVisibility(View.GONE);
		super.onPostExecute(result);
		
		result =true;
	}
	
	
	
	
	
	private void DoRead() {
		String result = WebService.readUrl("http:..",null);
		   if(result != null){
			   try {
				    G.tasks.clear();
				    JSONArray tasks = new JSONArray(result); 
				    for(int i = tasks.length()-1 ; i>=0;i--){                    
					JSONObject object  = tasks.getJSONObject(i);
					StructTask task = new StructTask();
					task.id = object.getLong("task_id");
					task.title = object.getString("task_title");
					task.desc = object.getString("task_desc");
					task.done = object.getInt("task_done") == 1 ?true:false;
					G.tasks.add(task);
				
				}
			} catch (JSONException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			   
		   }
	}
	

  }

 LinearLayout layout = (LinearLayout) NewsFragment.rootView.findViewById(R.id.progressbar_view);
	ListView lstContent  = (ListView) NewsFragment.rootView.findViewById(R.id.lstContent);