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

Question

Im creating a convertor application, I want to set the EditText so that when the user is inputting the number to be converted, a thousand separator (,) should be added autom

Answer 1

Here i have tested my application code. text-watcher how to add comma in currency thousand, lake currency.

 private TextWatcher textWatcherAmount = 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) {
            String initial = s.toString();

            if (inputEdtHawalaRate == null) return;

            if (!TextUtils.isEmpty(initial)) {

                initial = initial.replace(",", "");

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

                inputEdtHawalaRate.removeTextChangedListener(this);

                double myNumber = Double.parseDouble(initial);
                String processed = formatter.format(myNumber);

                //Assign processed text
                inputEdtHawalaRate.setText(processed);

                try {
                    inputEdtHawalaRate.setSelection(processed.length());
                } catch (Exception e) {
                    e.printStackTrace();
                }

                //Give back the listener
                inputEdtHawalaRate.addTextChangedListener(this);

            }

        }

        @Override
        public void afterTextChanged(Editable s) {

        }
    };


 if (inputEdtHawalaRate != null) {
            inputEdtHawalaRate.addTextChangedListener(textWatcherAmount);
        } 

// getting amount on double type varaible (On textwatcher editetxt value get).

String amount = Objects.requireNonNull(inputEdtHawalaRate.getText()).toString().trim();
double hawalaAmount = 0.0;

 String[] a = amount.split(",");
            finalAmount = TextUtils.join("", a);
            hawalaAmount = Double.parseDouble(finalAmount);