Call ProgressDialog inside onCreate

• Add 

             import android.app.ProgressDialog;

• Declare progress dialog  globally in this page

         ProgressDialog progressDialog;

• Add some code in the onCreate method before task start

        progressDialog = new ProgressDialog(ClassName.this);

progressDialog.setMessage("Loading...");

progressDialog.setCancelable(false);

progressDialog.setCanceledOnTouchOutside(false);

progressDialog.setIndeterminate(false);

progressDialog.show(); 

•      Now you can add you Thread. Write your necessary code inside Thread.After finsih you tast and before leaving Thread,please dismiss your progressDialog.

             new Thread(new Runnable() {

public void run() {

                                              /* Wirte your Codes which take long time and are not in the main
                                                  thread  i.e. HttpClient call

                                                */

                                              progressDialog.dismiss();

}

}).start();