Android : Get Selected Date from dialog- Timessquare library

I am new to android app development. I am using timessquare library to show datepicker. i am not able to get the selected date set in my edittext from the dialog.

where should i put et1.setText(sel_date);

  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.avail_layout);


    final Calendar nextYear = Calendar.getInstance();
    nextYear.add(Calendar.YEAR, 1);

    final Calendar lastYear = Calendar.getInstance();
    lastYear.add(Calendar.YEAR, -1);



    et1 = (EditText) findViewById(R.id.date);

    et1.setOnClickListener(new OnClickListener() {
        @Override public void onClick(View view) {
          dialogView = (CalendarPickerView) getLayoutInflater().inflate(R.layout.dialog, null, false);
          dialogView.init(lastYear.getTime(), nextYear.getTime()) //
              .withSelectedDate(new Date());
          theDialog =
              new AlertDialog.Builder(avail_activity.this).setTitle("Select a Date")
                  .setView(dialogView)
                  .setNeutralButton("Done", new DialogInterface.OnClickListener() {
                    @Override public void onClick(DialogInterface dialogInterface, int i) {

                        dialogInterface.dismiss();


                    }
                  })
                  .create();
          theDialog.setOnShowListener(new DialogInterface.OnShowListener() {
            @Override
            public void onShow(DialogInterface dialogInterface) {
              Log.d(TAG, "onShow: fix the dimens!");
              dialogView.fixDialogDimens();
            }
          });
          theDialog.show();

        }

      }

            );