Android edit text decimal format

Question

Can I ask how to format string value e.g.

5000000.00

to

5,000,000.00

? Apparently I'm doing currency related stuff for android application, I can managed to just format string value

5000000

to

5,000,000

without the dot separator in the edit text. I would like to store the string value for later to be used to parseDouble so that I will need to calculate and have some decimals. I managed to do with just comma separator but any idea on how to make the dot to be shown in the edit text as well?
The following is my code:

amountText.addTextChangedListener(new TextWatcher() {

            @Override

            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }



            @Override

            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }



            @Override

            public void afterTextChanged(Editable s) {

                amountText.removeTextChangedListener(this);

                if(!amountText.getText().toString().equals(""))

                {

                    try {

                        String editText = amountText.getText().toString();

                        String newStr = editText.replace("$", "").replace(",", "");

                        customer.getProperty().get(groupPosition).setAmount(newStr);

                        String formattedString = formatString(customer.getProperty().get(groupPosition).getAmount());

                        amountText.setText(formattedString);

                        amountText.setSelection(amountText.getText().length());

                        // to place the cursor at the end of text

                    } catch (NumberFormatException nfe) {

                        nfe.printStackTrace();

                    } catch (Exception e) {

                        e.printStackTrace();

                    }

                }

                amountText.addTextChangedListener(this);

            }

        });



public String formatString(String s)

{

        String givenstring = s.toString();

        Long longval;

        if (givenstring.contains(",")) {

            givenstring = givenstring.replaceAll(",", "");

        }

        longval = Long.parseLong(givenstring);

        DecimalFormat formatter = new DecimalFormat("#,###,###");

        String formattedString = formatter.format(longval);

        return formattedString;

}

I have tested use parseDouble but when I input "." in

EditText

, it just won't appear, and if I used long variable instead, it will give wrong format and error. (java.lang.NumberFormatException: Invalid long: "500000.00"). All values are done in string and later processing I will just parse the value when doing calculation.
Thank you and appreciate for anyone guidance and I apologize if there exists the post that is similar as I did not manage to find solution yet.

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Answer 1

Try this:

public void afterTextChanged(Editable view) {
    String s = null;
    try {
        // The comma in the format specifier does the trick
        s = String.format("%,d", Long.parseLong(view.toString()));
    } catch (NumberFormatException e) {
    }
    // Set s back to the view after temporarily removing the text change listener
}

Source: How to Automatically add thousand separators as number is input in EditText

Android edit text decimal format

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