这次在代码上比上一次改进了一些，并且加载完全部数据后会在lisview底部显示一个“已加载全部“的textview。大家可以对比我的上一篇博客
android Listview分批加载+自动加载（附源码下载）看看代码有啥不同
直接上代码：
public class TestForListviewActivity extends Activity implements
OnScrollListener {
private View mFooterView;
private LinearLayout mloadingLinear;//正在加载时显示的view
private TextView mLoadFinishTextView;//加载全部数据后显示的view
private final int LOAD_STATE_IDLE=0;//没有在加载，并且服务器上还有数据没加载
private final int LOAD_STATE_LOADING=1;//正在加载状态
private final int LOAD_STATE_FINISH=2;//表示服务器上的全部数据都已加载完毕
private int loadState=LOAD_STATE_IDLE;//记录加载的状态
private final int MAX_COUNT=15;//表示服务器总共有MAX_COUNT条数据
private final int EACH_COUNT=10;//表示每次加载的条数
private ListView mListview = null;
private PaginationAdapter mAdapter;
private Handler handler=new Handler();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mFooterView = getLayoutInflater().inflate(R.layout.loadmore, null);
mloadingLinear=(LinearLayout) mFooterView.findViewById(R.id.loading_linear);
mLoadFinishTextView=(TextView) mFooterView.findViewById(R.id.load_finish_textview);
mListview = (ListView) findViewById(R.id.listview);
mListview.addFooterView(mFooterView);// 设置列表底部视图
List news=new ArrayList();
mAdapter = new PaginationAdapter(news);;
mListview.setAdapter(mAdapter);
//设置setOnScrollListener会自动调用onscroll方法。
mListview.setOnScrollListener(this);
}
public void onScroll(AbsListView view, int firstVisibleItem,
int visibleItemCount, int totalItemCount) {
Log.i("onS", "firstVisibleItem"+firstVisibleItem+" visibleItemCount"+visibleItemCount+" totalItemCount"+totalItemCount);
if (firstVisibleItem+visibleItemCount==totalItemCount) {
if(loadState==LOAD_STATE_IDLE)
{
Log.i("onScroll", "firstVisibleItem"+firstVisibleItem+" visibleItemCount"+visibleItemCount+" totalItemCount"+totalItemCount);
loadState=LOAD_STATE_LOADING;
loadMore();
}
}
}
public void onScrollStateChanged(AbsListView arg0, int scrollState) {
Log.i("onScrollStateChanged", scrollState+"");
}
private void loadMore(){
//等待2秒之后才加载，模拟网络等待时间为2s
handler.postDelayed(new Runnable() {
public void run() {
loadData();
mAdapter.notifyDataSetChanged();
if (loadState==LOAD_STATE_FINISH) {
//加载全部数据后在底部显示一个“已加载全部”的textview
mloadingLinear.setVisibility(View.GONE);
mLoadFinishTextView.setVisibility(View.VISIBLE);
}
}
},2000);
}
private void loadData() {
int dataIndex;//要加载的数据的index(从0开始)
int count = mAdapter.getCount();
//如果服务端还有数据，则继续加载更多
for (dataIndex = count; dataIndexnewsItems;
public PaginationAdapter(List newsitems) {
this.newsItems = newsitems;
}
public int getCount() {
return newsItems==null?0:newsItems.size();
}
public Object getItem(int position) {
return newsItems.get(position);
}
public long getItemId(int position) {
return position;
}
public void addNewsItem(News newsitem) {
newsItems.add(newsitem);
}
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = getLayoutInflater().inflate(R.layout.list_item,
null);
}
// 新闻标题
TextView tvTitle = (TextView) convertView
.findViewById(R.id.newstitle);
tvTitle.setText(newsItems.get(position).getTitle());
// 新闻内容
TextView tvContent = (TextView) convertView
.findViewById(R.id.newscontent);
tvContent.setText(newsItems.get(position).getContent());
return convertView;
}
}
}
改进版demo下载：源码下载
