在android的自定义数组适配器中获取筛选器选项？

public class CustomAdapter extends ArrayAdapter<String> {
    private List<String> originalData;
    private List<String> filteredData;
    private Filter filter;

    public CustomAdapter(Context context, List<String> data) {
        super(context, 0, data);
        originalData = data;
        filteredData = data;
        filter = new CustomFilter();
    }

    @Override
    public Filter getFilter() {
        return filter;
    }

    private class CustomFilter extends Filter {
        @Override
        protected FilterResults performFiltering(CharSequence constraint) {
            FilterResults results = new FilterResults();
            List<String> filteredList = new ArrayList<>();

            // 根据约束条件对数据进行筛选
            for (String item : originalData) {
                if (item.contains(constraint)) {
                    filteredList.add(item);
                }
            }

            results.values = filteredList;
            results.count = filteredList.size();
            return results;
        }

        @Override
        protected void publishResults(CharSequence constraint, FilterResults results) {
            filteredData = (List<String>) results.values;
            notifyDataSetChanged();
        }
    }
}

CustomAdapter adapter = new CustomAdapter(context, data);
AutoCompleteTextView autoCompleteTextView = findViewById(R.id.autoCompleteTextView);
autoCompleteTextView.setAdapter(adapter);
autoCompleteTextView.setFilter(adapter.getFilter());