Android ListView分页简单实现

 public class LoadListView extends ListView implements AbsListView.OnScrollListener{ private LayoutInflater mInflater; //判断是否滚动最后一行 private boolean isLastRow = false; //底部View布局 private View mFooter; //实现接口加载更多数据 public OnLoadMoreListener moreListener; public void setLoadMoreListener(OnLoadMoreListener moreListener){ this.moreListener = moreListener; } public LoadListView(Context context) { super(context); initView(); } public LoadListView(Context context, AttributeSet attrs) { super(context, attrs); initView(); } public LoadListView(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); initView(); } private void initView(){ mInflater = LayoutInflater.from(getContext()); mFooter = mInflater.inflate(R.layout. listview_footer,null); this.addFooterView(mFooter); mFooter.setVisibility(View.GONE); setOnScrollListener(this); } @Override public void onScrollStateChanged(AbsListView absListView, int scrollState) { //正在滚动时回调，回调2-3次，手指没抛则回调2次。scrollState = 2的这次不回调 //回调顺序如下 //第1次：scrollState = SCROLL_STATE_TOUCH_SCROLL(1) 正在滚动 //第2次：scrollState = SCROLL_STATE_FLING(2) 手指做了抛的动作（手指离开屏幕前，用力滑了一下） //第3次：scrollState = SCROLL_STATE_IDLE(0) 停止滚动 //当屏幕停止滚动时为0；当屏幕滚动且用户使用的触碰或手指还在屏幕上时为1； //由于用户的操作，屏幕产生惯性滑动时为2 //当滚到最后一行且停止滚动时，执行加载 if(isLastRow&&scrollState== OnScrollListener.SCROLL_STATE_IDLE){ mFooter.setVisibility(View.VISIBLE); isLastRow = false; if(moreListener!=null){ moreListener.loadMore(); } } } @Override public void onScroll(AbsListView absListView, int firstVisibleItem, int visibleItemCount, int totalItemCount) { //滚动时一直回调，直到停止滚动时才停止回调。单击时回调一次。 //firstVisibleItem：当前能看见的第一个列表项ID（从0开始） //visibleItemCount：当前能看见的列表项个数（小半个也算） //totalItemCount：列表项共数 //判断是否滚到最后一行 if (firstVisibleItem + visibleItemCount == totalItemCount && totalItemCount > 0) { isLastRow = true; } } public interface OnLoadMoreListener{ void loadMore(); } } 

 public class MainActivity extends Activity implements LoadListView.OnLoadMoreListener { private List list = new ArrayList<>() ; private loadAdapter mAdapter; private LoadListView mListView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); loadMoreData(); mListView =(LoadListView) findViewById(R.id.id_list_view); mAdapter = new loadAdapter(this,list); mListView.setAdapter(mAdapter); mListView.setLoadMoreListener(this); } private void loadMoreData(){ for(int i = 0 ; i <10;i++){ News news = new News(); news.setTitle("许巍"); news.setContent("蓝莲花"); list.add(news); } } @Override public void loadMore() { new Handler().postDelayed(new Runnable() { @Override public void run() { loadMoreData(); showLoadMore(); } },2000); } private void showLoadMore(){ mAdapter.notifyDataSetChanged(); } } 

 public class loadAdapter extends BaseAdapter { private List list; private Context mContext; public loadAdapter(Context context,List list){ this.list = list; this.mContext = context; } @Override public int getCount() { return list.size(); } @Override public Object getItem(int position) { return position; } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder viewHolder; if(convertView==null){ viewHolder = new ViewHolder(); convertView = LayoutInflater.from(mContext).inflate(R.layout.item_news,null); viewHolder.title = (TextView) convertView.findViewById(R.id.id_title); viewHolder.content = (TextView)convertView.findViewById(R.id.id_content); convertView.setTag(viewHolder); }else { viewHolder = (ViewHolder) convertView.getTag(); } viewHolder.title.setText(list.get(position).getTitle()); viewHolder.content.setText(list.get(position).getContent()); return convertView; } public class ViewHolder{ private TextView title; private TextView content; } }