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Bruno Sosa Fast Tag
Asked: 2020-12-15 04:39:43 +0800 CST 2020-12-15 04:39:43 +0800 CST

How to change symbol of a DecimalFormat?

  • 772

Yesterday looking for skins for a EditText, I found the following code snippet here on the site:

public static TextWatcher amount(final EditText editText) {
    return new TextWatcher() {
        DecimalFormat dec = new DecimalFormat("0.00");
        @Override
        public void afterTextChanged(Editable arg0) {
        }
        @Override
        public void beforeTextChanged(CharSequence s, int start,
                                      int count, int after) {
        }
        private String current = "";
        @Override
        public void onTextChanged(CharSequence s, int start,
                                  int before, int count) {
            if(!s.toString().equals(current)){
                editText.removeTextChangedListener(this);

                String cleanString = s.toString().replaceAll("[$,.]", "");

                double parsed = Double.parseDouble(cleanString);
                String formatted = NumberFormat.getCurrencyInstance().format((parsed/100));

                current = formatted;
                editText.setText(formatted);
                editText.setSelection(formatted.length());

                editText.addTextChangedListener(this);
            }
        }
    };
}

in which one I use like this

 final EditText txtMountCashOut = (EditText) findViewById(R.id.txtMountCashOut);
    txtMountCashOut.addTextChangedListener(CashOut.amount(txtMountCashOut));

Now what I don't understand is why when I am going to write, a dollar sign appears in front of the 0.00, as in the following image

enter image description here

I would like to be able to put something else, such as USD

the source of the code is in this question

https://stackoverflow.com/questions/5107901/better-way-to-format-currency-input-edittext

java

1 Answers

  1. Best Answer

    Using the instance of NumberFormat.getCurrencyInstance(), you can change the symbol using the method setDecimalFormatSymbols(simbolFormat):

    //..
if(!s.toString().equals(current)){
    editText.removeTextChangedListener(this);

    String cleanString = s.toString().replaceAll("[$,.]", "");

    double parsed = Double.parseDouble(cleanString);
    // Obtienes la instancia del formateador
    DecimalFormat decimalFormat  = NumberFormat.getCurrencyInstance();

    // obtener la instancia del formatiador de simbolos
    DecimalFormatSymbols symbols = decimalFormat.getDecimalFormatSymbols();

    // cambias el simbolo por US
    symbols.setCurrencySymbol("US");

    // le asignamos el nuevo formateador de simbolo
    formatter.setDecimalFormatSymbols(symbols);

    // formateamos
    String formatted = decimalFormat.format((parsed/100))

     current = formatted;
    editText.setText(formatted);
    editText.setSelection(formatted.length());

    editText.addTextChangedListener(this);
}
//...

    What this does is change the symbol formatter from decimalFormatter to US

    • 2