How to show progress dialog in Android?

ProgressDialog pd = new ProgressDialog(yourActivity.this);pd.setMessage("loading");pd.show();

And that's all you need.

You better try with AsyncTask

Sample code -

private class YourAsyncTask extends AsyncTask<Void, Void, Void> {    private ProgressDialog dialog;    public YourAsyncTask(MyMainActivity activity) {        dialog = new ProgressDialog(activity);    }    @Override    protected void onPreExecute() {        dialog.setMessage("Doing something, please wait.");        dialog.show();    }    @Override    protected Void doInBackground(Void... args) {        // do background work here        return null;    }    @Override    protected void onPostExecute(Void result) {         // do UI work here        if (dialog.isShowing()) {            dialog.dismiss();        }    }}

Use the above code in your Login Button Activity. And, do the stuff in doInBackground and onPostExecute

Update:

ProgressDialog is integrated with AsyncTask as you said your task takes time for processing.

Update:

ProgressDialog class was deprecated as of API 26

To use ProgressDialog use the below code

ProgressDialog progressdialog = new ProgressDialog(getApplicationContext());progressdialog.setMessage("Please Wait....");

To start the ProgressDialog use

progressdialog.show();

progressdialog.setCancelable(false); is used so that ProgressDialog cannot be cancelled until the work is done.

To stop the ProgressDialog use this code (when your work is finished):

progressdialog.dismiss();`