将 listView 项目分类到不同的部分 - Android

在我的列表视图中，我试图将我的数据划分（分类）到不同的部分，说我有一个州列表，我想根据他们的国家对它们进行分类，但我现在所拥有的是按字母顺序对我的数据进行分类，我不知道这是如何发生的以及我怎样才能实现我想要的。有人可以在这里指导我吗？

我的适配器：

public class MyAdapter extends BaseAdapter implements StickyListHeadersAdapter {

private String[] countries;
private LayoutInflater inflater;
private  ArrayList<States> statesArray;



public MyAdapter(Context context , ArrayList<States> states) {
    inflater = LayoutInflater.from(context);
    satesArray = states;
    countries = context.getResources().getStringArray(R.array.all_countries);
}

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

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

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

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder;

    if (convertView == null) {
        holder = new ViewHolder();
        convertView = inflater.inflate(R.layout.list_view_row, parent, false);
        holder.text = (TextView) convertView.findViewById(R.id.listViewTextView);
        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

    holder.text.setText(statesArray.get(position).getName());


    return convertView;
}

@Override
public View getHeaderView(int position, View convertView, ViewGroup parent) {
    HeaderViewHolder holder;
    if (convertView == null) {
        holder = new HeaderViewHolder();
        convertView = inflater.inflate(R.layout.sticky_header, parent, false);
        holder.text = (TextView) convertView.findViewById(R.id.text1);
        convertView.setTag(holder);
    } else {
        holder = (HeaderViewHolder) convertView.getTag();
    }
    //set header text as first char in name

    String headerText = "" + countries[position];
    holder.text.setText(headerText);
    return convertView;
}

@Override
public long getHeaderId(int position) {
   // return the first character of the country as ID because this is what headers are based upon

    return satesArray.get(position).getName().subSequence(0, 1).charAt(0);
}

class HeaderViewHolder {
    TextView text;
}

class ViewHolder {
    TextView text;
}

}

UPDATE :

我想要的就在这里，但在部分中不是字母表，而是国家/地区名称，在行中将有相应国家/地区的状态：

就在这儿 https://github.com/emilsjolander/StickyListHeaders/raw/master/demo.gif