Android Connect to the URL Web Server (HttpURLConnection)

package com.myapp;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import android.os.Bundle;
import android.os.StrictMode;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.view.View;
import android.view.Menu;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

import android.widget.TextView;

public class MainActivity extends Activity {

    @SuppressLint("NewApi")
	@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        // Permission StrictMode
        if (android.os.Build.VERSION.SDK_INT > 9) {
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
        }
        
        // txtResult
        final TextView txtResult = (TextView)findViewById(R.id.txtResult);
        
           // txtURL
        final EditText txtURL = (EditText)findViewById(R.id.txtURL);     
        
        // btnDownload
        Button btnGet = (Button)findViewById(R.id.btnGet);
        btnGet.setOnClickListener(new OnClickListener(){
            public void onClick(View v) {
            	// TODO Auto-generated stub
            	HttpURLConnection conn = null;
            	try {
            		String url = txtURL.getText().toString();
					conn = (HttpURLConnection)new URL(url).openConnection();
					conn.setRequestMethod("GET");
                    conn.setInstanceFollowRedirects(true);
                    conn.setUseCaches(false);
                    
                    int resultServer = conn.getResponseCode();
                    if (resultServer == HttpURLConnection.HTTP_OK) {            
                          InputStream is = conn.getInputStream();
                          ByteArrayOutputStream bos = new ByteArrayOutputStream();
                          
                          int read = 0;
                          while ((read = is.read()) != -1) {
                                bos.write(read);
                          }
                          byte[] result = bos.toByteArray();
                          bos.close();
                               
                          String data = new String(result);
                          
                          txtResult.setText(data);
                    }
                    else {
                    	  txtResult.setText("Error Code : " + resultServer);
                    }
                                           
                    conn.disconnect();
					
				} catch (MalformedURLException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				} catch (IOException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
            }
        });
  
        
    }
   
	
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }
    
}