Cara disable tanggal kemarin

misi gan, ane pengen nanya..

final Calendar today = Calendar.getInstance();

final DatePickerDialog.OnDateSetListener date = new DatePickerDialog.OnDateSetListener(){
    @Override
    public void onDateSet(DatePicker datePicker, int year, int monthOfYear, int dayOfMonth) {
        today.set(Calendar.YEAR, year);
        today.set(Calendar.MONTH, monthOfYear);
        today.set(Calendar.DAY_OF_MONTH, dayOfMonth);
        updateLabel();

    }
    private void updateLabel() {
        String myFormat = "yyyy-MM-dd"; //In which you need put here
        SimpleDateFormat sdf = new SimpleDateFormat(myFormat, Locale.US);
        editText.setText(sdf.format(today.getTime()));
    }
};
editText.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        new DatePickerDialog(sakit.this, date, today
                .get(Calendar.YEAR), today.get(Calendar.MONTH),
                today.get(Calendar.DAY_OF_MONTH)).show();
    }
});

kalo mau disable tanggal kemarin misalkan -3 cara nya gimana gan ?