Listview分页加载功能实现

1、  新建加载更多提示布局文件footer_layout.xml

2、  LoadListVeiw extends ListView，构造时加载footer_layout提示布局到listview，提示隐藏GONE。   
LayoutInflater inflater = LayoutInflater.from(context);

    footer = inflater.inflate(R.layout.footer_layout, null);

    footer.findViewById(R.id.load_layout).setVisibility(View.GONE);

this.addFooterView(footer);

3、  LoadListVeiw实现OnScrollListene接口，监听loadlistview滑动到最底端时，显示提示布局VISIBLE，加载数据。完成时通知listview加载完毕，隐藏GONE

    @Override

    public void onScroll(AbsListView view, int firstVisibleItem,

           int visibleItemCount, int totalItemCount) {

       // TODO Auto-generated method stub

       this.lastVisibleItem = firstVisibleItem + visibleItemCount;

       this.totalItemCount = totalItemCount;

    }

     @Override

public void onScrollStateChanged(AbsListView view, int scrollState) {

       // TODO Auto-generated method stub

       if (totalItemCount == lastVisibleItem

              && scrollState == SCROLL_STATE_IDLE) {

           if (!isLoading) {

              isLoading = true;

              footer.findViewById(R.id.load_layout).setVisibility(

                     View.VISIBLE);

              // 加载更多

              iLoadListener.onLoad();

           }

       }

    }

 

4、  通过接口回调方法，让listview通知MainActivity加载显示。listview定义接口，

    public void setInterface(ILoadListener iLoadListener){

       this.iLoadListener = iLoadListener;

    }

    //加载更多数据的回调接口

    public interface ILoadListener{

       public void onLoad();

}

MainActivity设置回调listview.setInterface(this)，实现接口：

       public void onLoad() {

       //获取更多数据

       getLoadData();

       //更新listview显示；

        showListView(info_list);

       //通知listview加载完毕

       listview.loadComplete();

}