Tukukkk

I am working on saving the spinner object on my SQLite database, I have managed to get it to display on my adapter but everytime I close my app and reopen it says null but when I navigate to another space and go back it restores, below is my code what am I doing wrong?

public class ExpenseDetailFragment extends Fragment  {

    private View view;

    private ExpenseData selectedExpenseData;

    private final int PICKER_REQUEST = 1;

    private Activity activity = null;



    private String currency = "USD";

    private Spinner currencyd;



    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

                             Bundle savedInstanceState) {



        view = inflater.inflate(R.layout.fragment_expense_detail, container, false);

        activity = this.getActivity();



        selectedExpenseData = (ExpenseData) getArguments().getSerializable("selectedExpenseData");

        ImageButton storeExpenseButton = getActivity().findViewById(R.id.addExpense);

        Button deleteButton = view.findViewById(R.id.deleteButton);



        currencyd = getActivity().findViewById(R.id.currency_spinner);



        storeExpenseButton.setImageResource(R.drawable.ic_action_done);

        currencyd.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

            @Override

            public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {





                currency = adapterView.getItemAtPosition(i).toString();

            }



            @Override

            public void onNothingSelected(AdapterView<?> adapterView) {



                //adapterView.getLastVisiblePosition();



            }

        });





        //button

        storeExpenseButton.setOnClickListener(v -> {





            String cur = currencyd.getSelectedItem().toString();





            TextView amountTextView1 = getActivity().findViewById(R.id.amount);

            try {



                double amount = Double.valueOf(amountTextView1.getText().toString());



                selectedExpenseData.setExpenseAmount(amount);

            } catch (NumberFormatException e) {



                Toast.makeText(getContext(), "Budget created", Toast.LENGTH_SHORT).show();

            }



            selectedExpenseData.setCurrency(cur);

            if (selectedExpenseData.getId() != 0)

                updateExpense(v, selectedExpenseData);

            else

                storeExpense(v, selectedExpenseData);

        });









        return view;

    }





    private void storeExpense(View view, ExpenseData expenseData) {





        ContentValues values = new ContentValues();



        values.put(ExpensesContract.ExpenseEntry.COLUMN_EXPENSE_CURRENCY, expenseData.getCurrency());





        if (uri == null) {

            Toast.makeText(this.getActivity(), R.string.editor_save_expense_failed,

                    Toast.LENGTH_SHORT).show();

        } else {

            Toast.makeText(this.getActivity(), R.string.editor_save_expense_successful,

                    Toast.LENGTH_SHORT).show();

            checkBudgets(expenseData.getExpenseName());

        }

        getActivity().finish();



        Intent intent = new Intent(this.getActivity(), MainActivity.class); //remove this after fix

        startActivity(intent);//remove this after fix



    }



    private void updateExpense(@SuppressWarnings("unused") View view, ExpenseData expenseData) {

        Uri currentExpenseURI = ContentUris.withAppendedId(ExpensesContract.ExpenseEntry.CONTENT_URI, expenseData.getId());





        ContentValues values = new ContentValues();



        values.put(ExpensesContract.ExpenseEntry.COLUMN_EXPENSE_CURRENCY, expenseData.getCurrency());



        int rowsAffected = getActivity().getContentResolver().update(currentExpenseURI, values, null, null);



        if (rowsAffected == 0) {

            Toast.makeText(this.getActivity(), getString(R.string.editor_update_expense_failed),

                    Toast.LENGTH_SHORT).show();

        } else {

            Toast.makeText(this.getContext(), getString(R.string.editor_update_expense_successful),

                    Toast.LENGTH_SHORT).show();

            checkBudgets(expenseData.getExpenseName());

        }

        getActivity().finish();



        Intent intent = new Intent(this.getActivity(), MainActivity.class); //remove this after fix

        startActivity(intent);//remove this after fix

    }