城市列表实现类

package com.bwie.test;

import java.util.ArrayList;
import java.util.List;

import com.bwie.fragment.HomePager;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class CityPagerActivity extends Activity implements OnItemClickListener{
String[] letter = { “A”, “B”, “C”, “D”, “E”, “F”, “G”, “H”, “I”, “J”, “K”,
“L”, “M”, “N”, “O”, “P”, “Q”, “R”, “S”, “T”, “U”, “V”, “W”, “X”,
“Y”, “Z” };

String[] city = { "C", "B", "H", "G", "W", "C", "S", "S", "C", "W", "H",
        "Z", "C", "D", "N", "L", "Q", "S", "S", "L", "N", "H", "X", "H",
        "S", "Z", "G", "N", "J", "T", "S", "X", "A" };
String[] cityName = { "长沙", "北京", "杭州", "广州", "武汉", "重庆", "上海", "深圳", "长春",
        "乌鲁木齐", "哈尔滨", "郑州", "成都", "大连", "南昌", "兰州", "齐齐哈尔", "汕头", "苏州",
        "拉萨", "南京", "呼和浩特", "厦门", "合肥", "沈阳", "张家界", "贵州", "宁夏", "济南",
        "天津", "石家庄", "西安", "澳门" };
List<String> list = new ArrayList<String>();
private ListView left_lv;

private ListView right_lv;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_city_pager);

    left_lv = (ListView) findViewById(R.id.left_lv);

    right_lv = (ListView) findViewById(R.id.right_lv);
    for (int i = 0; i < letter.length; i++) {

        boolean flag = false;

        for (int j = 0; j < city.length; j++) {
            //s
            if(letter[i].equals(city[j])){

                if(!flag){
                    flag =true;
                    //加载城市对应的字母  s
                    list.add(letter[i]);
                }
                //加哉城市
                list.add(cityName[j]);

            }

        }

    }



    left_lv.setAdapter(new leftAdapter());
    right_lv.setAdapter(new RightAdapter());


    left_lv.setOnItemClickListener(this);
    right_lv.setOnItemClickListener(this);
}
class leftAdapter extends BaseAdapter {

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

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public int getItemViewType(int position) {

        for (int i = 0; i < letter.length; i++) {

            if(letter[i].equals(list.get(position))){

                return 0;
            }

        }

        return 1;
    }

    @Override
    public int getViewTypeCount() {
        return 2;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

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

        int type = getItemViewType(position);

        if(convertView==null){
            switch (type) {
            case 0:
                convertView =View.inflate(CityPagerActivity.this, R.layout.left_item1, null);

                break;

            case 1:

                convertView =View.inflate(CityPagerActivity.this, R.layout.left_item2, null);
                break;
            }
        }
        TextView left_item1_tv = (TextView) convertView.findViewById(R.id.left_item1_tv);
        TextView left_item2_tv = (TextView) convertView.findViewById(R.id.left_item2_tv);

        switch (type) {
        case 0:
            left_item1_tv.setText(list.get(position));
            break;
        case 1:
            left_item2_tv.setText(list.get(position));
            break;
        }
        return convertView;
    }
}
class RightAdapter extends BaseAdapter {

    @Override
    public int getCount() {
        return letter.length;
    }

    @Override
    public Object getItem(int position) {
        return null;
    }

    @Override
    public long getItemId(int position) {
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        if(convertView==null){
            convertView = View.inflate(CityPagerActivity.this, R.layout.right_item, null);
        }
        TextView right_item_tv = (TextView) convertView.findViewById(R.id.right_item_tv);

        right_item_tv.setText(letter[position]);
        return convertView;
    }

}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
        long id) {

    switch (parent.getId()) {
    case R.id.left_lv:
        boolean isLetter = false;
        for (int i = 0; i < letter.length; i++) {
            //如果letter[i] ==list.get(position) 说明我现在点击的是字母
            if(letter[i].equals(list.get(position))){
                isLetter = true;
                break;
            }

        }

        if(!isLetter){
            Intent intent=new Intent(CityPagerActivity.this, FragmentMannegerActivity.class);
            String city=list.get(position);
            intent.putExtra("city",city);
            startActivity(intent);
            Toast.makeText(CityPagerActivity.this, "当前城市"+list.get(position), 0).show();
            finish();
        }


        break;

    case R.id.right_lv:

        for (int i = 0; i < list.size(); i++) {
            if(letter[position].equals(list.get(i))){
                //根据索引跳到指定的位置
                left_lv.setSelection(i);

            }

        }

        break;
    }
}

}