public class MainActivity extends Activity {private ListView listview;private List<String> datas;private LayoutInflater inflater;private MyAdapter adapter;private List<String>  contents;private int count = 0;private View footView;private Handler handler = new Handler();int lastItem;private RelativeLayout loading;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initData();inflater = LayoutInflater.from(this);listview = (ListView) findViewById(R.id.listview);adapter = new MyAdapter();footView = inflater.inflate(R.layout.footer, null);loading = (RelativeLayout) footView.findViewById(R.id.loading);//listview的addFooterView()添加view到listview底部一定要加在listview.setAdapter(adapter);这代码前面
        listview.addFooterView(footView);listview.setAdapter(adapter);//添加listview滚动监听listview.setOnScrollListener(new OnScrollListener() {//AbsListView view 这个view对象就是listview
            @Overridepublic void onScrollStateChanged(AbsListView view, int scrollState) {if (scrollState == OnScrollListener.SCROLL_STATE_IDLE) {if (view.getLastVisiblePosition() == view.getCount() - 1) {loadData();}}}@Overridepublic void onScroll(AbsListView view, int firstVisibleItem,int visibleItemCount, int totalItemCount) {lastItem = firstVisibleItem + visibleItemCount - 1 ;}});}protected void loadData() {loading.setVisibility(View.VISIBLE);handler.postDelayed(new Runnable() {@Overridepublic void run() {load();loading.setVisibility(View.GONE);adapter.notifyDataSetChanged();}}, 5000);}protected void load() {int count=adapter.getCount()+1;for(int i=count;i<count+20;i++){contents.add("加载数据:::"+i);}}private void initData() {contents = new ArrayList<String>();for(int i=1;i<20;i++){contents.add("加载数据:::"+i);}}class MyAdapter extends BaseAdapter{@Overridepublic int getCount() {return contents.size();}@Overridepublic Object getItem(int position) {return contents.get(position);}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {ViewHolder holder;if(convertView==null){convertView = inflater.inflate(R.layout.item, parent, false);holder = new ViewHolder();holder.tvContent = (TextView) convertView.findViewById(R.id.tvContent);convertView.setTag(holder);}else{holder = (ViewHolder) convertView.getTag();}holder.tvContent.setText(contents.get(position));return convertView;}class ViewHolder{TextView tvContent;}}
}