How to implement progressBar while loading data?

Question

I want to implement progressBar like on the picture below.

Right now, I have AsyncTask whic is sperated from fragments classes, and I use that AsyncTask to load data, an

Answer 1

class YourCLassName extends AsyncTask {

    private ProgressDialog pd = new ProgressDialog(Files.this);

    @Override
    protected void onPreExecute() {
        // TODO Auto-generated method stub
        super.onPreExecute();
        pd.setTitle("your message");

        pd.show();

    }

    @Override
    protected Void doInBackground(String... params) {
            // YOUR PIECE OF CODE

        return null;
    }

    @Override
    protected void onPostExecute(Void result) {
        // TODO Auto-generated method stub
        super.onPostExecute(result);


            pd.setMessage("Task Completed  .. whatever");


    @Override
    protected void onProgressUpdate(Integer... values) {
        // TODO Auto-generated method stub
        super.onProgressUpdate(values);
    }


}