class

  private class GetXMLTask extends AsyncTask<String, Void, List<Event>> {
        private Activity context;
        public GetXMLTask(Activity context) {
            this.context = context;
        }

        @Override
        protected void onPreExecute() {
            LinearLayout linlaHeaderProgress = (LinearLayout) findViewById(R.id.linlaHeaderProgress);
            linlaHeaderProgress.setVisibility(View.VISIBLE);
        }

        @Override
        protected void onPostExecute(List<Event> events) {
            LinearLayout linlaHeaderProgress = (LinearLayout) findViewById(R.id.linlaHeaderProgress);
            linlaHeaderProgress.setVisibility(View.GONE);
        }

        @Override
        protected List<Event> doInBackground(String... urls) {
        do stuff
        }
    }