android ListView中一些源码测试程序

 

package com.ldci.listview;

import android.app.ListActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AbsListView;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.AbsListView.OnScrollListener;

public class MainAct extends ListActivity {
 private String[] title = {"aaa","bbb","ccc","ddd","eee","fff","ggg","hhh","iii","jjj","kkk","lll",
   "mmm","nnn","ooo","ppp","qqq","rrr","sss","ttt"};
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        MyAdapter adapter = new MyAdapter(this, title);
        setListAdapter(adapter);
        ListView listView = new ListView(this);
        listView.setOnScrollListener(new OnScrollListener() {
   ImageView imageView = (ImageView)findViewById(R.id.imageView1);
   @Override
   public void onScrollStateChanged(AbsListView view, int scrollState) {
    // TODO Auto-generated method stub
    if(scrollState==SCROLL_STATE_FLING){
     imageView.setVisibility(View.VISIBLE);
    }else{
     imageView.setVisibility(View.INVISIBLE);
    }

   }
   
   @Override
   public void onScroll(AbsListView view, int firstVisibleItem,
     int visibleItemCount, int totalItemCount) {
    // TODO Auto-generated method stub
    
   }
  });
    }
   
   
}