如何以编程方式更改ListView中的TextView的背景颜色？

public class CustomAdapter extends ArrayAdapter<String> {
    private Context context;
    private int resource;
    private List<String> objects;

    public CustomAdapter(Context context, int resource, List<String> objects) {
        super(context, resource, objects);
        this.context = context;
        this.resource = resource;
        this.objects = objects;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        LayoutInflater inflater = LayoutInflater.from(context);
        convertView = inflater.inflate(resource, parent, false);

        TextView textView = convertView.findViewById(R.id.textView);
        textView.setText(objects.get(position));

        changeTextViewBackgroundColor(textView, position);

        return convertView;
    }

    private void changeTextViewBackgroundColor(TextView textView, int position) {
        // 在这里更改TextView的背景颜色
    }
}

private void changeTextViewBackgroundColor(TextView textView, int position) {
    if (position % 2 == 0) {
        textView.setBackgroundColor(Color.parseColor("#FFC107")); // 浅黄色
    } else {
        textView.setBackgroundColor(Color.parseColor("#00BCD4")); // 浅蓝色
    }
}

public class MainActivity extends AppCompatActivity {
    private ListView listView;
    private CustomAdapter customAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        listView = findViewById(R.id.listView);

        List<String> data = new ArrayList<>();
        data.add("Item 1");
        data.add("Item 2");
        data.add("Item 3");
        data.add("Item 4");
        data.add("Item 5");

        customAdapter = new CustomAdapter(this, R.layout.list_item, data);
        listView.setAdapter(customAdapter);
    }
}