Getting Exception at HttpConnection.connect() android

Question 1

Try this..

TextView txt;

 @Override 
 public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

    txt = (TextView) findViewById(R.id.text);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB)
        new DownloadText("http://www.edumobile.org/android/").executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, new String[]{null});
    else
        new DownloadText("http://www.edumobile.org/android/").execute(new String[]{null});

}

    public class DownloadText extends AsyncTask<String, Void, String> {

        // variables passed in:
        String urls;
        //  constructor
        public DownloadText(String urls) {
            this.urls = urls;
        }

        @Override
        protected void onPreExecute() {
            pDialog = ProgressDialog.show(httpsData.this, "Fetching Details..", "Please wait...", true);
        }


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


             int BUFFER_SIZE = 2000;
        InputStream in = null;
        try {

        InputStream in = null;
        int response = -1;

        URL url = new URL(urls); 

        URLConnection conn = url.openConnection();     
       if (!(conn instanceof HttpURLConnection))  
        {
            throw new IOException("Not an HTTP connection");
        }

            HttpURLConnection httpConn = (HttpURLConnection) conn;
            httpConn.setAllowUserInteraction(false);
            httpConn.setInstanceFollowRedirects(true);
            httpConn.setRequestMethod("GET");
            httpConn.connect();
            response = httpConn.getResponseCode();                 
            if (response == HttpURLConnection.HTTP_OK) {
                in = httpConn.getInputStream();                                 
    } 

        } catch (IOException e1) {
            // TODO Auto-generated catch block
            e1.printStackTrace();
            return "";
        }
        InputStreamReader isr = new InputStreamReader(in);
        int charRead;
        String str = "";
        char[] inputBuffer = new char[BUFFER_SIZE];          
        try {
            while ((charRead = isr.read(inputBuffer))>0)
            {                    
                //---convert the chars to a String---
                String readString = String.copyValueOf(inputBuffer, 0, charRead);
                str += readString;
                inputBuffer = new char[BUFFER_SIZE];
            }
            in.close();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
            return "";
        } 
        }

        @Override
        protected void onPostExecute(String result) {
            // Now we have your JSONObject, play around with it.
            if (pDialog.isShowing())
                pDialog.dismiss();

            if(!result.equals(""))
                txt.setText(result);
        }

    }

Question 2

You cannot execute HTTP connect request on main thread.

Use an Async Task and perform http request in doInBackground() method.

Question 3

you have to use asynch task for this purpose. To execute Server class use these code in your method from where you want to call HTTP CONNECTION----------- Server downloadFile = new Server(); downloadFile.execute();

class Server extends AsyncTask<String, Integer, String> {

    @Override
    protected String doInBackground(String... arg0) {
        // TODO Auto-generated method stub
        try{
            ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
             HttpClient httpclient = new DefaultHttpClient();
             //link
             String adad="http://"+iP+"/"+faCility+"/distt.php";
             HttpPost httppost = new HttpPost(adad);

             nameValuePairs.add(new BasicNameValuePair(uSername,pAssword));
             httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));


              response = httpclient.execute(httppost);
              if(response !=null)
              {

                  HttpEntity entityy = response.getEntity();
                     is = entityy.getContent();

              }


             }catch(Exception e){
                 Log.e("log_tag", "Error in http connection"+e.toString());

            }
        //convert response to string
        if(is !=null){
        try{//StringBuilder sb = new StringBuilder();
BufferedReader reader = new BufferedReader(new InputStreamReader(is,"iso-8859-1"),8);


              System.out.println("66666666666666");
                   //todo your work here with "is"


              sb = new StringBuilder();
               sb.append(reader.readLine() + "\n");

               System.out.println("77777777777");
               String line="0";
               while ((line = reader.readLine()) != null) {
                             sb.append(line + "\n");

               }

               is.close();
                System.out.println("88888888888888");
              System.out.println(sb);
                result=sb.toString();
    System.out.println("---------------------------------"+result+"---------------------");
                System.out.println("9999999999999999999");
                       }catch(Exception e){
                      Log.e("log_tag", "Error converting result "+e.toString());

                }
        }

        return result;
    }
    protected void onPostExecute(String resultt)
    {
    }
    }