public void addCalendar(){
    final Calendar myCalendar = Calendar.getInstance();

    final DatePickerDialog.OnDateSetListener date = new DatePickerDialog.OnDateSetListener() {

        @Override
        public void onDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth) {
            myCalendar.set(Calendar.YEAR, year);
            myCalendar.set(Calendar.MONTH, monthOfYear);
            myCalendar.set(Calendar.DAY_OF_MONTH, dayOfMonth);
            SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy", Locale.FRANCE);

            _birthdateText.setText(sdf.format(myCalendar.getTime()));
        }

    };

    _birthdateText.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            DatePickerDialog dpd = new DatePickerDialog(SignupActivity.this, date, myCalendar
                    .get(Calendar.YEAR), myCalendar.get(Calendar.MONTH),
                    myCalendar.get(Calendar.DAY_OF_MONTH));
            dpd.getDatePicker().setCalendarViewShown(false);
            //dpd.getDatePicker().setSpinnersShown(true);
            dpd.setTitle(getString(R.string.birthdate_picker_title));
            dpd.show();
        }
    });
}