城市列表索引

public class MainActivity 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<>();

    private ListView left_lv;

    private ListView right_lv;

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

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

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

        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(MainActivity.this, R.layout.left_item1, null);

                    break;

                case 1:

                    convertView =View.inflate(MainActivity.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(MainActivity.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){
                Toast.makeText(MainActivity.this, list.get(position), 0).show();
            }


            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;


        }

    }

}

主布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    >

    <ListView
        android:scrollbars="none"
        android:id="@+id/left_lv"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
         />

       <ListView
          android:scrollbars="none"
        android:id="@+id/right_lv"
        android:layout_width="20dp"
        android:layout_height="wrap_content"
         />

</LinearLayout>

left1

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    >

    <ListView
        android:scrollbars="none"
        android:id="@+id/left_lv"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1"
         />

       <ListView
          android:scrollbars="none"
        android:id="@+id/right_lv"
        android:layout_width="20dp"
        android:layout_height="wrap_content"
         />

</LinearLayout>

left2

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >


    <TextView 
        android:id="@+id/left_item2_tv"
        android:background="#ffffff"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>


</LinearLayout>

right

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical" >


    <TextView 
        android:id="@+id/right_item_tv"
        android:background="#00ff00"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>


</LinearLayout>