android problem with progress dialog

I have an application where I fetch data from http server & set data to activity. for fetching data from server it takes time. so i want to give an progress dialog there. I did that but problem is that progressdialog is coming but its not rotating(only constant). Plz anybody tell me how it came like this!

Below is my code,

private void setupViews()
    {
        imgRe开发者_如何学Cstro = (ImageView) findViewById(R.id.imageResturant);
        tvRestroName = (TextView) findViewById(R.id.tvRestroName);
        tvRestroAddr = (TextView) findViewById(R.id.tvRestroAddr);
        tvRestroArea = (TextView) findViewById(R.id.tvRestroArea);
        tvRestroCity = (TextView) findViewById(R.id.tvRestroCity);
        tvRestroPhone = (TextView) findViewById(R.id.tvRestroPhone);
        tvRestroRating = (TextView) findViewById(R.id.tvRestroRating);
        tvRestroCuisines = (TextView) findViewById(R.id.tvRestroCuisines);
        tvRestroAttr = (TextView) findViewById(R.id.tvRestroAttributes);
    }
//to execute url
    private String executeHttpGet(String URL) throws Exception {

        URL url = null;
        StringBuffer strBuf = null;
        BufferedReader read = null;
        HttpURLConnection httprequest = null;
        try {
            url = new URL(URL);
            httprequest = (HttpURLConnection) url.openConnection();
            httprequest.setRequestMethod("GET");
            httprequest.setDoInput(true);
            httprequest.setDoOutput(true);
            httprequest.setConnectTimeout(5000); //time for before connect
            httprequest.setRequestProperty("Content-Type",
                    "text/plain; charset=utf-8");
            //httprequest.setReadTimeout(15000);  //time for after connect

            read = new BufferedReader(new InputStreamReader(
                    httprequest.getInputStream()));

            strBuf = new StringBuffer();

            String line = "";

            while ((line = read.readLine()) != null) {
                strBuf.append(line).append("\n");
            }

        } catch (IOException ex) {

        } finally {
            try {
                httprequest.disconnect();
                read.close();
            } catch (Exception ex) {

            }
        }
        return strBuf.toString();

    }
    //to assign all the info from json to activity textview or imageview
    private void examineJSONFile() {
        try {

            String str = "";
            page = executeHttpGet(url);
            Log.i("hello", str.toString());

            JSONObject topobj = new JSONObject(page);
            JSONObject innerobj = topobj.getJSONObject("restarutant");

            tvRestroName.setText("Restaurant "+innerobj.getString("name"));
            String photoURL = innerobj.getString("photo");
            URI uri = new URI(photoURL);
            Bitmap bmp = loadBitmap(photoURL);
            System.out.println("str ;" + photoURL + "    uri " + uri);

            imgRestro.setImageBitmap(Bitmap.createScaledBitmap(bmp, 300, 300,true));
            tvRestroAddr.setText("Address: " + innerobj.getString("address"));
            tvRestroArea.setText("Area: " + innerobj.getString("area"));
            tvRestroCity.setText("City: " + innerobj.getString("city"));
            JSONArray location = innerobj.getJSONArray("location");
            String lat = location.get(0).toString();
            String lng = location.get(1).toString();
            latitude = Double.valueOf(lat.trim()).doubleValue();
            longitude = Double.valueOf(lng.trim()).doubleValue();
            System.out.println("Lat :" + latitude + " Long :" + longitude);

            JSONArray phone = innerobj.getJSONArray("phone");
            tvRestroPhone.setText("Phone: " + phone.get(0).toString() + " ,"
                    + phone.get(1).toString());

            tvRestroRating.setText("Rating: " + innerobj.getString("rating"));

            JSONArray cuisines = innerobj.getJSONArray("cuisines");
            tvRestroCuisines.setText("Cuisines: " + cuisines.get(0).toString()
                    + " ," + cuisines.get(1).toString());

            JSONArray attributes = innerobj.getJSONArray("attributes");
            tvRestroAttr.setText("Attributes: " + attributes.get(0).toString()
                    + " ," + attributes.get(1).toString() + " ,"
                    + attributes.get(2).toString());

            Log.i("hello", str.toString());

        } catch (Exception je) {
            tvRestroAddr.setText("Error w/file: " + je.getMessage());
        }
    }

    // to get image from url in form of bitmap
    private static Bitmap loadBitmap(String url) {
        URL myFileUrl = null;
        InputStream is = null;
        try {
            myFileUrl = new URL(url);
        } catch (MalformedURLException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        try {
            HttpURLConnection conn = (HttpURLConnection) myFileUrl
                    .openConnection();
            conn.setDoInput(true);
            conn.connect();
            is = conn.getInputStream();
            Log.i("im connected", "Download");

        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return BitmapFactory.decodeStream(is);
    }

    //for progressdialog
     private class DownloadTask extends AsyncTask<Void, Void, Void> {
            private ProgressDialog dialog = new ProgressDialog(InfoActivity.this);

            protected void onPreExecute() {
                System.out.println("In onPreExecute "); 
                dialog.setTitle("Loading..");
                dialog.setMessage("Downloading source..");
                dialog.setProgress(100);
                dialog.setMax(5000);
                dialog.show();
            }

            protected Void doInBackground(Void... unused) {
                //examineJSONFile();
                System.out.println("In doInBackground ");   
                return null;
            }


            protected void onPostExecute(Void unused) {
                System.out.println("In onPostExecute ");    
                     dialog.dismiss();
                         examineJSONFile();         
}

Plz have a look and give the answer. Thank you

You should override onProgressUpdate() method in AsyncTask and change your dialog's value there. You can send your progress value to the dialog via publishProgress() method from doInBackground(). Hope this helps.

Try using Async task as shown below:

try{
    class test extends AsyncTask{


 TextView tv_per;
 int mprogress;

Dialog UpdateDialog = new Dialog(ClassContext);

@Override
protected void onPreExecute() {
    // TODO Auto-generated method stub
    mprogress = 0;

    UpdateDialog.setTitle(getResources().getString(R.string.app_name));
    UpdateDialog.setContentView(R.layout.horizontalprogressdialog);
    TextView dialog_message =  (TextView)UpdateDialog.findViewById(R.id.titleTvLeft);
    tv_per = (TextView)UpdateDialog.findViewById(R.id.hpd_tv_percentage);
    dialog_message.setText(getResources().getString(R.string.dialog_retrieving_data));
    dialog_message.setGravity(Gravity.RIGHT);
    UpdateDialog.setCancelable(false);
    UpdateDialog.show();
    super.onPreExecute();
}



@Override
protected void onProgressUpdate(Object... values) {
    // TODO Auto-generated method stub
    ProgressBar update = (ProgressBar)UpdateDialog.findViewById(R.id.horizontalProgressBar);
    update.setProgress((Integer) values[0]);
    int percent =  (Integer) values[0];
 if(percent>=100)
    {
        percent=100;
    }
    tv_per = (TextView)UpdateDialog.findViewById(R.id.hpd_tv_percentage);
     tv_per.setText(""+percent);
}



@Override
protected Object doInBackground(Object... params) {
    // TODO Auto-generated method stub
    //your code
}

    super.onPostExecute(result);
    UpdateDialog.dismiss();
}

}
new test().execute(null);

}
catch(Exception e)
{
e.printStackTrace();
}