Android edittext: Formatting number

Question

I have a edittext, and if I enter input number as 100000, the result must be 100.000, and if I enter input as 1000000, the result must be 1.000.000.

After every 3 characters from the last to beginning must have a "."

Here is my code:

tambah = (EditText)rootView.findViewById(R.id.total);
tambah.setOnFocusChangeListener(new OnFocusChangeListener(){
       public void onFocusChange(View v, boolean hasFocus) {
              // ...
       }

Answer 1

Here is something I use to for dollar input. It makes sure that there are only 2 places past the decimal point at all times. You should be able to adapt it to your needs by removing the $ sign.

amountEditText.setRawInputType(Configuration.KEYBOARD_12KEY);
amountEditText.addTextChangedListener(new TextWatcher() {
    public void afterTextChanged(Editable s) {}
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

public void onTextChanged(CharSequence s, int start, int before, int count) {
    if(!s.toString().matches("^\\$(\\d{1,3}(\\,\\d{3})*|(\\d+))(\\.\\d{2})?$"))
    {
        String userInput= ""+s.toString().replaceAll("[^\\d]", "");
        StringBuilder cashAmountBuilder = new StringBuilder(userInput);

        while (cashAmountBuilder.length() > 3 && cashAmountBuilder.charAt(0) == '0') {
            cashAmountBuilder.deleteCharAt(0);
        }
        while (cashAmountBuilder.length() < 3) {
            cashAmountBuilder.insert(0, '0');
        }
        cashAmountBuilder.insert(cashAmountBuilder.length()-2, '.');
        cashAmountBuilder.insert(0, '$');

        amountEditText.setText(cashAmountBuilder.toString());
        // keeps the cursor always to the right
        Selection.setSelection(amountEditText.getText(), cashAmountBuilder.toString().length());

    }

}
});