EditText - 如何分隔在组或块中在 EditText 中键入的字符

有没有一种方法可以在用户打字时将 EditText 中的字符分组到块中？示例：1234 4567 7890等等？

我有一个支持数字且长度为 16 个字符的编辑文本，我想将它们分组在单独的块中以获得更好的可见性。

    editText.addTextChangedListener(new FourDigitCardFormatWatcher(editText));

每 4 位数字添加一个空格。使用以下代码。

public class FourDigitCardFormatWatcher implements TextWatcher {

    // Change this to what you want... ' ', '-' etc..
        private final String space = " ";
        EditText et_filed;


        public FourDigitCardFormatWatcher(EditText et_filed){
            this.et_filed = et_filed;
        }

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

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }

        @Override
        public void afterTextChanged(Editable s) {
            String initial = s.toString();
            // remove all non-digits characters
            String processed = initial.replaceAll("\\D", "");

            if (processed.length() > 4){
                processed = processed.replaceAll("(\\d{4})(?=\\d)", "$1 ");
            }

            //Remove the listener
            et_filed.removeTextChangedListener(this);

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

            try {
                et_filed.setSelection(processed.length());
        } catch (Exception e) {
            // TODO: handle exception
        }

        //Give back the listener
            et_filed.addTextChangedListener(this);
        }
    }