package cn.com.basic.face.adapter;

import android.content.Context;
import android.widget.ArrayAdapter;
import android.widget.SectionIndexer;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Set;

public class PhoneCallFragment {

    public class AlphabeticalAdapter extends ArrayAdapter<String> implements SectionIndexer
    {
        private HashMap<String, Integer> alphaIndexer;
        private String[] sections;

        public AlphabeticalAdapter(Context c, int resource, List<String> data)
        {
            super(c, resource, data);
            alphaIndexer = new HashMap<String, Integer>();
            for (int i = 0; i < data.size(); i++)
            {
                String s = data.get(i).substring(0, 1).toUpperCase();
                if (!alphaIndexer.containsKey(s))
                    alphaIndexer.put(s, i);
            }

            Set<String> sectionLetters = alphaIndexer.keySet();
            ArrayList<String> sectionList = new ArrayList<String>(sectionLetters);
            Collections.sort(sectionList);
            sections = new String[sectionList.size()];
            for (int i = 0; i < sectionList.size(); i++)
                sections[i] = sectionList.get(i);
        }

        public int getPositionForSection(int section)
        {
            return alphaIndexer.get(sections[section]);
        }

        public int getSectionForPosition(int position)
        {
            return 1;
        }

        public Object[] getSections()
        {
            return sections;
        }
    }

}