在适配器中更改列表项的背景

public class CustomAdapter extends BaseAdapter {
    private List<String> data;
    private Context context;

    public CustomAdapter(Context context, List<String> data) {
        this.context = context;
        this.data = data;
    }

    @Override
    public int getCount() {
        return data.size();
    }

    @Override
    public Object getItem(int position) {
        return data.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

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

        // 获取列表项的视图对象
        TextView textView = view.findViewById(R.id.text_view);

        // 设置列表项的背景颜色
        if (position % 2 == 0) {
            textView.setBackgroundColor(Color.BLUE);
        } else {
            textView.setBackgroundColor(Color.GREEN);
        }

        // 绑定数据到列表项
        textView.setText(data.get(position));

        return view;
    }
}