ListView 分页加载更新实例分享

private void initActivity() { 
// TODO Auto-generated method stub 
loadMoreView = getLayoutInflater().inflate(R.layout.loadmore, null); 
loadmore_btn = (Button) loadMoreView.findViewById(R.id.loadmore_btn); 
loadmore_btn.setOnClickListener(new OnClickListener() { 
@Override 
public void onClick(View v) { 
// TODO Auto-generated method stub 
doUpdate(); 
} 
}); 
listView = (ListView) findViewById(R.id.listView); 
listView.addFooterView(loadMoreView); 
initAdapter(); 
listView.setAdapter(adapter); 
listView.setOnScrollListener(new OnScrollListener() { 
@Override 
public void onScrollStateChanged(AbsListView view, int scrollState) { 
// TODO Auto-generated method stub 
int itemsLastIndex = adapter.getCount() - 1; 
int lastIndex = itemsLastIndex + 1; 
if (scrollState == OnScrollListener.SCROLL_STATE_IDLE 
&& visibleLast == lastIndex) { 
// 可在这添加滑到列表底的时候异步自动加载 
// doUpdate(); 
} 
} 
@Override 
public void onScroll(AbsListView view, int firstVisibleItem, 
int visibleItemCount, int totalItemCount) { 
// TODO Auto-generated method stub 
visibleCount = visibleItemCount; 
visibleLast = firstVisibleItem + visibleItemCount - 1; 
} 
}); 
} 
protected void doUpdate() { 
// TODO Auto-generated method stub 
loadmore_btn.setText("loading ..."); 
handler.postDelayed(new Runnable() { 
@Override 
public void run() { 
// TODO Auto-generated method stub 
loadData(); 
adapter.notifyDataSetChanged();// 通知adapter数据变化 
listView.setSelection(visibleLast - visibleCount + 1); 
loadmore_btn.setText("Load More"); 
} 
}, 2000); 
} 
private void loadData() { 
// TODO Auto-generated method stub 
int count = adapter.getCount(); 
for (int i = count; i < count + 10; i++) { 
adapter.addItem(String.valueOf(i + 1)); 
} 
} 
private void initAdapter() { 
// TODO Auto-generated method stub 
List<String> items = new ArrayList<String>(); 
for (int i = 0; i < 10; i++) { 
items.add(String.valueOf(i + 1)); 
} 
adapter = new ListAdapter(this, items); 
} 
@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
// Inflate the menu; this adds items to the action bar if it is present. 
getMenuInflater().inflate(R.menu.activity_main, menu); 
return true; 
} 

public ListAdapter(Context context, List<String> items) { 
this.items = items; 
this.inflater = (LayoutInflater) context 
.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
} 
@Override 
public int getCount() { 
// TODO Auto-generated method stub 
return items.size(); 
} 
@Override 
public Object getItem(int position) { 
// TODO Auto-generated method stub 
return items.get(position); 
} 
@Override 
public long getItemId(int position) { 
// TODO Auto-generated method stub 
return position; 
} 
@Override 
public View getView(int position, View convertView, ViewGroup parent) { 
// TODO Auto-generated method stub 
if (convertView == null) { 
convertView = inflater.inflate(R.layout.list_item, null); 
} 
TextView textView = (TextView) convertView 
.findViewById(R.id.list_item_text); 
textView.setText(items.get(position)); 
return convertView; 
} 
/** 
* 添加列表项 
* @param item 
*/ 
public void addItem(String item){ 
items.add(item); 
}