The clear method in SpannableStringBuilder removes the spans

Question

I have a question.

Code:

@Override
    public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        FragmentProfileBinding fragmentProfileBinding = FragmentProfileBinding.inflate(getLayoutInflater());

        String[] list = {"123", "456", "789"};

        //Default
        fragmentProfileBinding.txt.setText(list[0]);

        SpannableStringBuilder spannableStringBuilder = new SpannableStringBuilder(fragmentProfileBinding.txt.getText());
        spannableStringBuilder.setSpan(new ClickableSpan() {
            @Override
            public void onClick(@NonNull View view) {
                new AlertDialog.Builder(requireContext())
                        .setItems(list, (dialogInterface, i) -> {
                            spannableStringBuilder.clear();
                            spannableStringBuilder.append(list[i]);
                            fragmentProfileBinding.txt.setText(spannableStringBuilder);
                        })
                        .show();
            }
        }, 0, fragmentProfileBinding.txt.length(), Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
        fragmentProfileBinding.txt.setText(spannableStringBuilder);
        fragmentProfileBinding.txt.setLinkTextColor(Color.parseColor("#3897f0"));
        fragmentProfileBinding.txt.setMovementMethod(LinkMovementMethod.getInstance());

        return fragmentProfileBinding.getRoot();
    }

When changing the value from 123 to 456 or 789, The spans will remove and the text will no longer be clickable, Why?

How can you help me?

Thank you.