Automatically add dash in phone number in Android

Question

Instead of 5118710, it should be 511-8710. I\'d like to add a dash after the user the user inputted 3 digits already in the EditText. The maximum length of

Answer 1

Thanks for the all above answer.

• The editText.setOnKeyListener() will never invoke when your device has only soft keyboard.

• If we strictly follow the rule to add "-", then this code not always show desire result.

  editText.addTextChangedListener(new PhoneNumberFormattingTextWatcher());

but above code is best solution for formatting phone no.

Apart from above this solution, I write a code which work on all types of condition::

phoneNumber.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) {
            if (len > phoneNumber.getText().length() ){
                len--;
                return;
            }
            len = phoneNumber.getText().length();

            if (len == 4 || len== 8) {
                String number = phoneNumber.getText().toString();
                String dash = number.charAt(number.length() - 1) == '-' ? "" : "-";
                number = number.substring(0, (len - 1)) + dash + number.substring((len - 1), number.length());
                phoneNumber.setText(number);
                phoneNumber.setSelection(number.length());
            }
        }
    });

this line of code required to add "-" on 3rd & 6th position of number. if (len == 4 || len== 8)