我无法正确标记自定义适配器中的复选框

public class CustomAdapter extends ArrayAdapter<Item> {
    private ArrayList<Item> itemList;
    private HashMap<Integer, Boolean> checkedItems;

    public CustomAdapter(Context context, ArrayList<Item> itemList) {
        super(context, 0, itemList);
        this.itemList = itemList;
        checkedItems = new HashMap<>();
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if (convertView == null) {
            convertView = LayoutInflater.from(getContext()).inflate(R.layout.list_item, parent, false);
        }

        Item currentItem = itemList.get(position);

        CheckBox checkBox = convertView.findViewById(R.id.checkbox);
        checkBox.setChecked(checkedItems.get(position));

        checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                checkedItems.put(position, isChecked);
            }
        });

        // 其他视图组件的处理...

        return convertView;
    }
}