重新驗證 Firebase 使用者

public class ReAuthenticateDialogFragment extends DialogFragment {

    @BindView(R.id.et_dialog_reauthenticate_email)
    EditText mEditTextEmail;
    @BindView(R.id.et_dialog_reauthenticate_password)
    EditText mEditTextPassword;
    private OnReauthenticateSuccessListener mOnReauthenticateSuccessListener;

    @OnClick(R.id.btn_dialog_reauthenticate)
    void onReauthenticateClick() {

        FormValidationUtils.clearErrors(mEditTextEmail, mEditTextPassword);

        if (FormValidationUtils.isBlank(mEditTextEmail)) {
            FormValidationUtils.setError(null, mEditTextEmail, "Please enter email");
            return;
        }

        if (!FormValidationUtils.isEmailValid(mEditTextEmail)) {
            FormValidationUtils.setError(null, mEditTextEmail, "Please enter valid email");
            return;
        }

        if (TextUtils.isEmpty(mEditTextPassword.getText())) {
            FormValidationUtils.setError(null, mEditTextPassword, "Please enter password");
            return;
        }

        reauthenticateUser(mEditTextEmail.getText().toString(), mEditTextPassword.getText().toString());
    }

    private void reauthenticateUser(String email, String password) {
        DialogUtils.showProgressDialog(getActivity(), "Re-Authenticating", "Please wait...", false);
        FirebaseUser firebaseUser = FirebaseAuth.getInstance().getCurrentUser();
        AuthCredential authCredential = EmailAuthProvider.getCredential(email, password);
        firebaseUser.reauthenticate(authCredential)
                .addOnCompleteListener(new OnCompleteListener<Void>() {
                    @Override
                    public void onComplete(@NonNull Task<Void> task) {
                        DialogUtils.dismissProgressDialog();
                        if (task.isSuccessful()) {
                            mOnReauthenticateSuccessListener.onReauthenticateSuccess();
                            dismiss();
                        } else {
                            ((BaseAppCompatActivity) getActivity()).showToast(task.getException().getMessage());
                        }
                    }
                });
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        mOnReauthenticateSuccessListener = (OnReauthenticateSuccessListener) context;
    }

    @OnClick(R.id.btn_dialog_reauthenticate_cancel)
    void onCancelClick() {
        dismiss();
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.dialog_reauthenticate, container);
        ButterKnife.bind(this, view);
        return view;
    }

    @Override
    public void onResume() {
        super.onResume();
        Window window = getDialog().getWindow();
        window.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);
    }

    interface OnReauthenticateSuccessListener {
        void onReauthenticateSuccess();
    }
}