OnScrollListener分页加载

scrollState有三种状态，分别是SCROLL_STATE_IDLE、SCROLL_STATE_TOUCH_SCROLL、SCROLL_STATE_FLING
    *SCROLL_STATE_IDLE是当屏幕停止滚动时
 
  *SCROLL_STATE_TOUCH_SCROLL是当用户在以触屏方式滚动屏幕并且手指仍然还在屏幕上时（The user is
scrolling using touch, and their finger is still on the screen）
    *SCROLL_STATE_FLING是当用户由于之前划动屏幕并抬起手指，屏幕产生惯性滑动时

Mainactivity.java

package com.exmple.listviewdemoup;

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

import com.exaple.vo.Apap;
import com.exaple.vo.Super;

import android.os.Bundle;
import android.app.Activity;
import android.util.Log;
import android.view.Menu;
import android.widget.AbsListView;
import android.widget.AbsListView.OnScrollListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity implements OnScrollListener {

	private boolean isLoad = false;
	int count = 1;
	private List<Super> list;
	private Apap ap;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		ListView listview = (ListView) findViewById(R.id.listview);

		getData("");
		ap = new Apap(list, MainActivity.this);
		listview.setAdapter(ap);
		listview.setOnScrollListener(this);
	}

	public List<Super> getData(String param) {
		list = new ArrayList<Super>();
		for (int i = 0; i < 30; i++) {
			Super s = new Super(param + "fan" + i);
			list.add(s);
		}
		return list;

	}

	List<Super> lists = new ArrayList<Super>();

	@Override
	public void onScrollStateChanged(AbsListView view, int scrollState) {
		Log.i("TAG", "onScrollStateChanged  isLoad=" + isLoad + ";是否是停止滚动："
				+ (scrollState == OnScrollListener.SCROLL_STATE_IDLE));
		Log.i("TAG", "scrollState" + scrollState);
		if (isLoad && scrollState == OnScrollListener.SCROLL_STATE_IDLE) {
			Toast.makeText(getApplicationContext(), "开始加载数据", 1).show();
			getData("web" + count);
			count++;

			ap.getData(list);
			ap.notifyDataSetChanged();
		}
	}

	@Override
	public void onScroll(AbsListView view, int firstVisibleItem,
			int visibleItemCount, int totalItemCount) {
		Log.i("TAG", "firstVisibleItem=" + firstVisibleItem);
		Log.i("TAG", "visibleItemCount=" + visibleItemCount);
		Log.i("TAG", "totalItemCount=" + totalItemCount);
		isLoad = ((firstVisibleItem + visibleItemCount) == totalItemCount);
	}

}

　　适配器

package com.exaple.vo;

import java.util.HashMap;
import java.util.List;

import com.exaple.vo.Super;
import com.exmple.listviewdemoup.R;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.TextView;

public class Apap extends BaseAdapter {
	List<Super> list;
	Context co;
	private View view;
	private ViewHolder vh;

	public Apap(List<Super> list, Context co) {
		super();
		this.list = list;
		this.co = co;
	}

	@Override
	public int getCount() {
		// TODO Auto-generated method stub
		return list.size();
	}

	@Override
	public Object getItem(int position) {
		// TODO Auto-generated method stub
		return list.get(position);
	}

	@Override
	public long getItemId(int position) {
		// TODO Auto-generated method stub
		return 0;
	}

	@Override
	public View getView(final int position, View convertView, ViewGroup parent) {
		if (convertView == null) {
			view = View.inflate(co, R.layout.apa, null);
			vh = new ViewHolder();
			vh.name = (TextView) view.findViewById(R.id.text);

			view.setTag(vh);
		} else {
			view = convertView;
			vh = (ViewHolder) view.getTag();
		}
		vh.name.setText(list.get(position).getName());

		return view;
	}

	public void getData(List<Super> s) {
		list.addAll(s);
	}

	public class ViewHolder {
		TextView name;
		TextView price;
		CheckBox cb;

	}

}