Live editing of users input

Question

Is it possible to auto insert characters into an EditText as the user inputs data?

I.e. if the user is entering a long number such as <

Answer 1

For those still facing trouble with backspace and multiple hyphens -

new TextWatcher() 
{
        boolean hyphenExists;

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
            if (s.length() >= 6 && s.charAt(5) == '-') {
                hyphenExists = true;
            } else {
                hyphenExists = false;
            }

            Log.d("TAG", "beforeTextChanged " + s.toString());
        }

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

            Log.d("TAG", "onTextChanged " + s.toString());
        }

        @Override
        public void afterTextChanged(Editable s) {
            if (s.length() == 5) {
                if (!hyphenExists)
                    s.append('-');
            }
            Log.d("TAG", "afterTextChanged " + s.toString());
        }
    }