ContactListAdapter.java

package com.sogouchat.ui;

import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;

import android.content.Context;
import android.graphics.Color;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.sogouchat.R;
import com.sogouchat.SogouChatApp;
import com.sogouchat.bean.ContactNode;
import com.sogouchat.bean.TelNode;
import com.sogouchat.ui.NewsListAdapter.SortByDate;
import com.sogouchat.ui.NewsListAdapter.ViewHolder;

public class ContactListAdapter extends BaseAdapter {
	
	public final class ViewHolder{
		public TextView mIcon;
		public TextView mName;
		public TextView mTel;
	}
	public ArrayList<TelNode> mData = new ArrayList<TelNode>();
	private LayoutInflater mInflater;
	private ContactListActivity mActivity;
	private View mCustomItem;
	private SogouChatApp mApp;
	public int[] mAlphaIndex = new int[27];
	
	public ContactListAdapter(Context context, SogouChatApp app){
		mActivity =(ContactListActivity) context;
		mInflater = LayoutInflater.from(context);
		mApp = app;
	}
	
	public void setupList() {
		mData = new ArrayList<TelNode>();
		for(int i=0;i < mApp.mTelList.size();i++){
			TelNode item = mApp.mTelList.get(i);
			if(item.mContactId!=0){
				mData.add(item);
			}
		}

		// sort list
		Collections.sort(mData, new SortByPinyin());
		splitByPinyin();
		for(int i = 0; i < mData.size();i++){
			Log.i("list", mData.get(i).mName+"pinyin="+mData.get(i).mPinyin);
		}
		
	}
	
	private void splitByPinyin(){
		char dChat = 0;
		for(int i =0; i < mData.size(); i++){
			TelNode item =mData.get(i);
			if(item.mPinyin == null) continue;
			char fChar = item.mPinyin.charAt(0);
			if (fChar != dChat ){
				if (fChar>='a'&&fChar<='z'){
					mAlphaIndex[fChar-'a'] = i;
					dChat = fChar;
					TelNode separator = new TelNode();
					separator.mName = String.valueOf(dChat).toUpperCase();
					separator.mTel = null;
					mData.add(i, separator);
					i++;
				}
				else if (fChar>='0'&&fChar<='9') {
					mAlphaIndex[26] = i;
					dChat = fChar;
					TelNode separator = new TelNode();
					separator.mName = String.valueOf('#');
					separator.mTel = null;
					mData.add(i, separator);
					i++;
				}

			}
		}
	}
	
	
	public ArrayList<TelNode> getData(){
		return mData;
	}
	
	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return getData().size();
	}

	@Override
	public Object getItem(int arg0) {
		// TODO Auto-generated method stub
		return null;
	}

	@Override
	public long getItemId(int arg0) {
		// TODO Auto-generated method stub
		return 0;
	}
	
	@Override
	public View getView(int position, View convertView, ViewGroup parent) {
		ViewHolder holder = null;
		TelNode item = mData.get(position);
		if (convertView == null) {
			holder = new ViewHolder();
			if (item.mTel != null) {
				convertView = mInflater.inflate(R.layout.item_contact_list, null);
			} else {
				convertView = mInflater.inflate(R.layout.item_news_separator,null);
			}
			convertView.setTag(holder);
		} else {
			holder = (ViewHolder) convertView.getTag();
		}
		
		if (holder == null) {
			holder = new ViewHolder();
		}
		if (item.mTel != null) {
			if (holder.mName== null || holder.mName.getId() != R.id.contact_text_name){
				convertView = mInflater.inflate(R.layout.item_contact_list, null);
			}
			holder.mIcon = (TextView) convertView.findViewById(R.id.contact_text_icon);
			holder.mName = (TextView) convertView.findViewById(R.id.contact_text_name);
			holder.mTel = (TextView) convertView.findViewById(R.id.contact_text_tel);
			holder.mName.setText(item.mName);
			holder.mIcon.setText(item.mName.substring(0, 1));
			holder.mTel.setText(item.mTel);
			convertView.setTag(holder);
		}
		else{
			convertView = mInflater.inflate(R.layout.item_news_separator,null);
			holder.mName = (TextView) convertView.findViewById(R.id.news_text_separator);
			holder.mName.setText(item.mName);
		}

		return convertView;
	}
	
	class SortByPinyin implements Comparator<Object> {
		public int compare(Object o1, Object o2) {
			TelNode item1 = (TelNode) o1;
			TelNode item2 = (TelNode) o2;
			if (item1.mPinyin == null){
				return -1;
			}
			else if (item2.mPinyin == null){
				return 1;
			}
			if (item1.mPinyin.charAt(0) > item2.mPinyin.charAt(0))
				return 1;
			else
				return -1;
		}
	}
	
	public int getAlphaIndex(int alpha){
		return mAlphaIndex[alpha];
	}
}