Custom numeric on TextWatcher

NumericTextWatcher.java

/*
Source: https://stackoverflow.com/questions/41734700/how-to-add-thousand-separator-in-android-edittext
*/

editText.addTextChangedListener(new TextWatcher() {
   @Override
   public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
   }
   @Override
   public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
   }
   @Override
   public void afterTextChanged(Editable editable) {
   editText.removeTextChangedListener(this);
   try {
StringBuilder originalString = new StringBuilder(editable.toString().replaceAll(",", ""));
int indx = 0;
for (int i = originalString.length(); i > 0; i--) {
if (indx % 3 == 0 && indx > 0)
 originalString = originalString.insert(i, ",");
 indx++;
}
 editText.setText(originalString);
 editText.setSelection(originalString.length());
  } catch (NumberFormatException nfe) {
  nfe.printStackTrace();
  }
                    editText.addTextChangedListener(this);
                }
            });