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

}

});

}

}