MoneyEditText.java

public class MoneyEditText extends TextInputEditText {

    public MoneyEditText(Context context) {
        super(context);
    }

    public MoneyEditText(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    private TextWatcher mWatcher;

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        mWatcher = new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
                //Nothing to implement
            }

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
                MoneyEditText.this.removeTextChangedListener(mWatcher);
                moneyFormat(charSequence, MoneyEditText.this);
                MoneyEditText.this.addTextChangedListener(mWatcher);
            }

            @Override
            public void afterTextChanged(Editable editable) {
                //Nothing to implement
            }
        };
        this.addTextChangedListener(mWatcher);
        this.setFilters(new InputFilter[]{new InputFilter.LengthFilter(19)});
        this.clearFocus();
    }

    public static void moneyFormat(CharSequence s, TextInputEditText amount) {
        DecimalFormatSymbols symbols = new DecimalFormatSymbols(new Locale("es-MX"));
        DecimalFormat dec = new DecimalFormat("###,###,###,##0.00", symbols);
        if (!s.toString().matches("^\\d{0,9}\\.\\d{1,2}$")) {
            String userInput = "" + s.toString().replaceAll("[^\\d]", "");
            if (userInput.length() > 0 && !userInput.equalsIgnoreCase("00")) {
                BigDecimal parsed = new BigDecimal(userInput).setScale(2, BigDecimal.ROUND_FLOOR).divide(new BigDecimal(100), BigDecimal.ROUND_FLOOR);
                amount.setText("$" + dec.format(parsed));
                amount.setSelection(amount.getText().length());
            } else
                amount.setText("");
        }
    }


    public Double getAmount() {
        try {
            if (TextUtils.isEmpty(getText().toString()))
                return 0d;

            String amount = getText().toString().trim().replace("$", "");
            amount = amount.replace(",", "");
            return Double.parseDouble(amount);
        } catch (NumberFormatException e) {
            Timber.e(e);
            return 0d;
        }
    }
}