AsyncTask

private class TaskGetAD extends AsyncTask<String, Integer, String> {
	@Override
	protected void onPreExecute() {
		showDialogLoading();
		super.onPreExecute();
	}

	protected String doInBackground(String... params) {
		try {
			// TODO

		} catch (Exception e) {
		}
		return null;
	}

	protected void onPostExecute(String result) {
		super.onPostExecute(result);
		cancelDialogLoading();
	}
}