Escribir en un EditText tipo tarjeta de crédito

private void onCreditCardType(int cardType) {
        boolean isAmex = cardType == CardType.AMEX;
        if (isAmex) {
            mCardNumberEditText.setMaxLines(1);
            mCardNumberEditText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(CREDIT_CARD_LENGTH_WITH_SPACES_AMEX)});
        } else {
            mCardNumberEditText.setMaxLines(1);
            mCardNumberEditText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(CREDIT_CARD_LENGTH_WITH_SPACES)});
        }
        mCardNumberEditText.setTextKeepState(mCardNumberEditText.getText().toString().replaceAll(" ", ""));
    }