Android Indeterminate Progress Bar (FEATURE_INDETERMINATE_PROGRESS)

package com.myapp;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.os.AsyncTask;
import android.os.Bundle;
import android.os.StrictMode;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.util.Log;
import android.view.View;
import android.view.Menu;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class MainActivity extends Activity {
	
    
    @SuppressLint("NewApi")
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        
        setContentView(R.layout.activity_main);
        
        setProgressBarIndeterminateVisibility(false); 
        
        // Permission StrictMode
        if (android.os.Build.VERSION.SDK_INT > 9) {
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
        }
       
        new  DownloadJSONAsync().execute();
		
    }
    
	public void ShowResult(final ArrayList<HashMap<String, String>> MyArrList)
	{
        // listView1
        final ListView lisView1 = (ListView)findViewById(R.id.listView1); 
        
        SimpleAdapter sAdap;
        sAdap = new SimpleAdapter(MainActivity.this, MyArrList, R.layout.activity_column,
                new String[] {"MemberID", "Name", "Tel"}, new int[] {R.id.ColMemberID, R.id.ColName, R.id.ColTel});      
        lisView1.setAdapter(sAdap);
        
        final AlertDialog.Builder viewDetail = new AlertDialog.Builder(this);
		// OnClick Item
		lisView1.setOnItemClickListener(new OnItemClickListener() {
			public void onItemClick(AdapterView<?> myAdapter, View myView,
					int position, long mylng) {

				String sMemberID = MyArrList.get(position).get("MemberID")
						.toString();
				String sName = MyArrList.get(position).get("Name")
						.toString();
				String sTel = MyArrList.get(position).get("Tel")
						.toString();
				
                //String sMemberID = ((TextView) myView.findViewById(R.id.ColMemberID)).getText().toString();
                // String sName = ((TextView) myView.findViewById(R.id.ColName)).getText().toString();
                // String sTel = ((TextView) myView.findViewById(R.id.ColTel)).getText().toString();
                
				viewDetail.setIcon(android.R.drawable.btn_star_big_on);
				viewDetail.setTitle("Member Detail");
				viewDetail.setMessage("MemberID : " + sMemberID + "\n"
						+ "Name : " + sName + "\n" + "Tel : " + sTel);
				viewDetail.setPositiveButton("OK",
						new DialogInterface.OnClickListener() {
							public void onClick(DialogInterface dialog,
									int which) {
								// TODO Auto-generated method stub
								dialog.dismiss();
							}
						});
				viewDetail.show();

			}
		});
	}
	
	 // Download JSON in Background
    public class DownloadJSONAsync extends AsyncTask<String, Void, Void> {
    	
     	
    	ArrayList<HashMap<String, String>> mArrList;
    	
        protected void onPreExecute() {
        	super.onPreExecute();
        	setProgressBarIndeterminateVisibility(true); 
        }

        @Override
        protected Void doInBackground(String... params) {
            // TODO Auto-generated method stub
      

    		/** JSON return
    		 *  [{"MemberID":"1","Name":"Weerachai","Tel":"0819876107"},
    		 * {"MemberID":"2","Name":"Win","Tel":"021978032"},
    		 * {"MemberID":"3","Name":"Eak","Tel":"0876543210"}]
    		 */
    		
    		String url = "https://www.thaicreate.com/android/getJSON.php";

    		try {
    			
    			JSONArray data = new JSONArray(getJSONUrl(url));
    			
    			mArrList = new ArrayList<HashMap<String, String>>();
    			HashMap<String, String> map;
    			
    			for(int i = 0; i < data.length(); i++){
                    JSONObject c = data.getJSONObject(i);
                    
        			map = new HashMap<String, String>();
        			map.put("MemberID", c.getString("MemberID"));
        			map.put("Name", c.getString("Name"));
        			map.put("Tel", c.getString("Tel"));
        			mArrList.add(map);
        			
    			}

    		} catch (JSONException e) {
    			// TODO Auto-generated catch block
    			e.printStackTrace();
    		}

        	
    		return null;
        }

        protected void onPostExecute(Void unused) {
        	ShowResult(mArrList); // When Finish Show Content
        	setProgressBarIndeterminateVisibility(false); 
        }
        
    }
	

	public String getJSONUrl(String url) {
		StringBuilder str = new StringBuilder();
		HttpClient client = new DefaultHttpClient();
		HttpGet httpGet = new HttpGet(url);
		try {
			HttpResponse response = client.execute(httpGet);
			StatusLine statusLine = response.getStatusLine();
			int statusCode = statusLine.getStatusCode();
			if (statusCode == 200) { // Download OK
				HttpEntity entity = response.getEntity();
				InputStream content = entity.getContent();
				BufferedReader reader = new BufferedReader(new InputStreamReader(content));
				String line;
				while ((line = reader.readLine()) != null) {
					str.append(line);
				}
			} else {
				Log.e("Log", "Failed to download file..");
			}
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return str.toString();
	}
	
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
    
}