public class download_applegaramound {

        public void download_applegaramound() {

            final ProgressDialog dialog = ProgressDialog.show(this, "TitleMessage", true);
            final Handler handler = new Handler() {
                public void handleMessage(Message msg) {
                    dialog.dismiss();
                }
            };

                    Thread checkUpdate = new Thread() {
                       public void run() {
                            try {
                                  byte[] b = new byte[1];
                                  URL url = new URL("");
                                  URLConnection urlConnection = url.openConnection();
                                  urlConnection.connect();
                                  DataInputStream di = new DataInputStream(urlConnection.getInputStream());
                                  FileOutputStream fo = new FileOutputStream("/sdcard/");
                                  while (-1 != di.read(b, 0, 1))
                                    fo.write(b, 0, 1);
                                  di.close();
                                        fo.close();
                              } catch (IOException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();

                              }
                                 handler.sendEmptyMessage(0);
                          }
                       };
                    checkUpdate.start();
        }
    }