android Listview分批載入+自動載入（附源碼下載）

標籤：android   listview   

直接上代碼，代碼有注釋：

public class TestForListviewActivity extends Activity implementsOnScrollListener {private ListView mListview = null;private View mFooterView;private PaginationAdapter mAdapter;private Handler handler=new Handler();private boolean isLoading;//表示是否正在載入private final int MAX_COUNT=35;//表示伺服器上總共有MAX_COUNT條資料private final int EACH_COUNT=10;//表示每次載入的條數@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);mFooterView = getLayoutInflater().inflate(R.layout.loadmore, null);mListview = (ListView) findViewById(R.id.listview);mListview.addFooterView(mFooterView);// 設定列表底部視圖List<News> news=new ArrayList<News>();mAdapter = new PaginationAdapter(news);;mListview.setAdapter(mAdapter);//設定setOnScrollListener會自動調用onscroll方法。mListview.setOnScrollListener(this);}public void onScroll(AbsListView view, int firstVisibleItem,int visibleItemCount, int totalItemCount) {if (firstVisibleItem+visibleItemCount==totalItemCount&&!isLoading) {//isLoading = true 表示正在載入，載入完畢設定isLoading =false；isLoading = true;//如果服務端還有資料，則繼續載入更多，否則隱藏底部的載入更多if (totalItemCount<=MAX_COUNT) {//等待2秒之後才載入，類比網路等待時間為2shandler.postDelayed(new Runnable() {public void run() {loadMoreData();}},2000);}else{if (mListview.getFooterViewsCount()!=0) {mListview.removeFooterView(mFooterView);}}}}public void onScrollStateChanged(AbsListView arg0, int arg1) {Log.i("onScrollStateChanged", arg1+"");}private void loadMoreData(){int count = mAdapter.getCount();for (int i = 0; i < EACH_COUNT; i++) {if (count+i<MAX_COUNT) {News item = new News();item.setTitle("Title" + (count+i));item.setContent("This is News Content" + (count+i));mAdapter.addNewsItem(item);}else{mListview.removeFooterView(mFooterView);}}mAdapter.notifyDataSetChanged();isLoading = false;}class PaginationAdapter extends BaseAdapter {List<News> newsItems;public PaginationAdapter(List<News> 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);}// 新聞標題TextView tvTitle = (TextView) convertView.findViewById(R.id.newstitle);tvTitle.setText(newsItems.get(position).getTitle());// 新聞內容TextView tvContent = (TextView) convertView.findViewById(R.id.newscontent);tvContent.setText(newsItems.get(position).getContent());return convertView;}}}

demo源碼下載：源碼下載