Android下拉刷新ListView——RTPullListView
下拉刷新在越来越多的App中使用，已经形成一种默认的用户习惯，遇到列表显示的内容时，用户已经开始习惯性的拉拉。在交互习惯上已经形成定性。之前在我的文章《IOS学习笔记34—EGOTableViewPullRefresh实现下拉刷新》中介绍过如何在IOS上实现下拉刷新的功能。今天主要介绍下在Android上实现下拉刷新的Demo，下拉控件参考自Github上开源项目PullToRefresh，并做简单修改。最终效果如下：
工程结构如下：
使用过程中可以对下拉显示效果进行自定义，如果要修改顶部下拉显示，则只需修改pulllist_head.xml即可，修改底部获取更多则修改list_footview.xml即可。
接下来是在Activity中使用：
/** * PullListView * @author Ryan * */public class RTPullListViewActivity extends Activity {private static final int INTERNET_FAILURE = -1;private static final int LOAD_SUCCESS = 1;private static final int LOAD_MORE_SUCCESS = 3;private static final int NO_MORE_INFO = 4;private static final int LOAD_NEW_INFO = 5;private RTPullListView pullListView;private ProgressBar moreProgressBar;private List<String> dataList;private ArrayAdapter<String> adapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); pullListView = (RTPullListView) this.findViewById(R.id.pullListView); dataList = new ArrayList<String>();for (int i = 0; i < 5; i++) {dataList.add("Item data "+i);}adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, dataList);pullListView.setAdapter(adapter);//添加listview底部获取更多按钮（可自定义） LayoutInflater inflater = LayoutInflater.from(this);View view = inflater.inflate(R.layout.list_footview, null);RelativeLayout footerView =(RelativeLayout) view.findViewById(R.id.list_footview);moreProgressBar = (ProgressBar) view.findViewById(R.id.footer_progress);pullListView.addFooterView(footerView);//下拉刷新监听器pullListView.setonRefreshListener(new OnRefreshListener() {@Overridepublic void onRefresh() {new Thread(new Runnable() {@Overridepublic void run() {try {//模拟数据刷新Thread.sleep(2000);dataList.clear();for (int i = 0; i < 5; i++) {dataList.add("Item data "+i);}myHandler.sendEmptyMessage(LOAD_NEW_INFO);} catch (InterruptedException e) {e.printStackTrace();}}}).start();}});//获取更多监听器footerView.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {moreProgressBar.setVisibility(View.VISIBLE);new Thread(new Runnable() {@Overridepublic void run() {try {//模拟数据刷新Thread.sleep(2000);for (int i = 0; i < 5; i++) {dataList.add("New item data "+i);}myHandler.sendEmptyMessage(LOAD_MORE_SUCCESS);} catch (InterruptedException e) {e.printStackTrace();}}}).start();}}); } //结果处理 private Handler myHandler = new Handler(){@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);switch (msg.what) {case LOAD_MORE_SUCCESS:moreProgressBar.setVisibility(View.GONE);adapter.notifyDataSetChanged();pullListView.setSelectionfoot();break;case LOAD_NEW_INFO:adapter.notifyDataSetChanged();pullListView.onRefreshComplete();break;default:break;}} };}具体使用及修改请参考Demo源码：源码下载
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