provinceAdapter、cityAdapter、countyAdapter 具体代码

好的，以下是三个适配器的代码示例：

省级适配器：

public class ProvinceAdapter extends BaseAdapter {

    private List<Province> data;
    private LayoutInflater inflater;

    public ProvinceAdapter(Context context, List<Province> data) {
        this.data = data;
        this.inflater = LayoutInflater.from(context);
    }

    public void updateData(List<Province> data) {
        this.data = data;
        notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        return data == null ? 0 : data.size();
    }

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

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if (convertView == null) {
            convertView = inflater.inflate(R.layout.list_item_province, parent, false);
            holder = new ViewHolder();
            holder.nameText = convertView.findViewById(R.id.name_text);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.nameText.setText(data.get(position).getName());
        return convertView;
    }

    private static class ViewHolder {
        TextView nameText;
    }
}

市级适配器：

public class CityAdapter extends BaseAdapter {

    private List<City> data;
    private LayoutInflater inflater;

    public CityAdapter(Context context, List<City> data) {
        this.data = data;
        this.inflater = LayoutInflater.from(context);
    }

    public void updateData(List<City> data) {
        this.data = data;
        notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        return data == null ? 0 : data.size();
    }

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

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if (convertView == null) {
            convertView = inflater.inflate(R.layout.list_item_city, parent, false);
            holder = new ViewHolder();
            holder.nameText = convertView.findViewById(R.id.name_text);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.nameText.setText(data.get(position).getName());
        return convertView;
    }

    private static class ViewHolder {
        TextView nameText;
    }
}

县级适配器：

public class CountyAdapter extends BaseAdapter {

    private List<County> data;
    private LayoutInflater inflater;

    public CountyAdapter(Context context, List<County> data) {
        this.data = data;
        this.inflater = LayoutInflater.from(context);
    }

    public void updateData(List<County> data) {
        this.data = data;
        notifyDataSetChanged();
    }

    public void clearData() {
        this.data = null;
        notifyDataSetChanged();
    }

    @Override
    public int getCount() {
        return data == null ? 0 : data.size();
    }

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

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

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;
        if (convertView == null) {
            convertView = inflater.inflate(R.layout.list_item_county, parent, false);
            holder = new ViewHolder();
            holder.nameText = convertView.findViewById(R.id.name_text);
            convertView.setTag(holder);
        } else {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.nameText.setText(data.get(position).getName());
        return convertView;
    }

    private static class ViewHolder {
        TextView nameText;
    }
}

其中，list_item_province、list_item_city、list_item_county 分别为省、市、县的列表项布局文件。