二级菜单关联

部分关键代码：
listView.setOnItemClickListener(new OnItemClickListener() {

			@Override
			public void onItemClick(AdapterView<?> arg0, View arg1, int position,
					long arg3) {
				// TODO Auto-generated method stub
				final int location=position;
				myAdapter.setSelectedPosition(position);
				myAdapter.notifyDataSetInvalidated();
				subAdapter=new SubAdapter(getApplicationContext(), cities, position);
				subListView.setAdapter(subAdapter);
				subListView.setOnItemClickListener(new OnItemClickListener() {

					@Override
					public void onItemClick(AdapterView<?> arg0, View arg1,
							int position, long arg3) {
						// TODO Auto-generated method stub
						Toast.makeText(getApplicationContext(), cities[location][position], Toast.LENGTH_SHORT).show();
					}
				});
			}
		});

    }

 private void selectDefult(){
	   final int location=0;
	 		myAdapter.setSelectedPosition(0);
	 		myAdapter.notifyDataSetInvalidated();
	 		subAdapter=new SubAdapter(getApplicationContext(), cities, 0);
	 		subListView.setAdapter(subAdapter);
	 		subListView.setOnItemClickListener(new OnItemClickListener() {

	 			@Override
	 			public void onItemClick(AdapterView<?> arg0, View arg1,
	 					int position, long arg3) {
	 				// TODO Auto-generated method stub
	 				Toast.makeText(getApplicationContext(), cities[location][position], Toast.LENGTH_SHORT).show();
	 			}
	 		});
   }
  ListView关键类：
package com.example.multilistview;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ListView;

public class MyListView extends ListView implements Runnable {
	private float mLastDownY = 0f;
    private int mDistance = 0;
    private int mStep = 10;
    private boolean mPositive = false; 

    public MyListView (Context context, AttributeSet attrs) {
          super(context, attrs);
    } 

    public MyListView (Context context, AttributeSet attrs, int defStyle) {
          super(context, attrs, defStyle);
    } 

    public MyListView (Context context) {
          super(context);
    } 

    @Override
    public boolean onTouchEvent(MotionEvent event) {
         switch (event.getAction()) {
              case MotionEvent.ACTION_DOWN:
                   if (mLastDownY == 0f && mDistance == 0) {
                         mLastDownY = event.getY();
                   return true;
              }
              break; 

    case MotionEvent.ACTION_CANCEL:
           break;

    case MotionEvent.ACTION_UP:
          if (mDistance != 0) {
           mStep = 1;
           mPositive = (mDistance >= 0);
           this.post(this);
           return true;
        }
        mLastDownY = 0f;
        mDistance = 0;
        break; 

    case MotionEvent.ACTION_MOVE:
        if (mLastDownY != 0f) {
              mDistance = (int) (mLastDownY - event.getY());
              if ((mDistance < 0 && getFirstVisiblePosition() == 0 && getChildAt(0).getTop() == 0) || (mDistance > 0 && getLastVisiblePosition() == getCount() - 1)) {
                   mDistance /= 2;
                   scrollTo(0, mDistance);
                   return true;
               }
        }
        mDistance = 0;
        break;
        }
        return super.onTouchEvent(event);
    } 

    public void run() {
          mDistance += mDistance > 0 ? -mStep : mStep;
          scrollTo(0, mDistance);
          if ((mPositive && mDistance <= 0) || (!mPositive && mDistance >= 0)) {
                scrollTo(0, 0);
                mDistance = 0;
                mLastDownY = 0f;
                return;
           }
          mStep += 1;
          this.postDelayed(this, 10);
     }
}