列表下拉刷新

listview下拉刷新

main.xml<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"  >    <com.handmark.pulltorefresh.library.PullToRefreshListView        android:layout_width="fill_parent"        android:layout_height="fill_parent"       android:id="@+id/pull_refresh_list"       /></RelativeLayout>

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MainActivity    // 找控件        listView = (PullToRefreshListView) findViewById(R.id.pull_refresh_list);        // 请求数据        new GetDataTask()                .execute("数据地址");----------// listview刷新监听        listView.setOnRefreshListener(new OnRefreshListener<ListView>() {            @Override            public void onRefresh(PullToRefreshBase<ListView> refreshView) {                String label = DateUtils.formatDateTime(                        getApplicationContext(), System.currentTimeMillis(),                        DateUtils.FORMAT_SHOW_TIME | DateUtils.FORMAT_SHOW_DATE                                | DateUtils.FORMAT_ABBREV_ALL);                refreshView.getLoadingLayoutProxy().setLastUpdatedLabel(label);                // 再次请求数据                new GetDataTask().execute("地址");            }        });----------//异步操作    private class GetDataTask extends AsyncTask<String, integer, String> {        private String str;        @Override//运行在子线程做耗时操作        protected String doInBackground(String... params) {            String string = params[0];            HttpClient httpClient = new DefaultHttpClient();            try {                HttpResponse response = httpClient                        .execute(new HttpPost(string));                if (response.getStatusLine().getStatusCode() == 200) {                    HttpEntity entity = response.getEntity();                    str = EntityUtils.toString(entity);                }            } catch (ClientProtocolException e) {                // TODO Auto-generated catch block                e.printStackTrace();            } catch (IOException e) {                // TODO Auto-generated catch block                e.printStackTrace();            }            return str;        }        @Override//运行在主线程        protected void onPostExecute(String result) {            super.onPostExecute(result);            Log.i("Main", result);            Gson gson = new Gson();            MyBean myBean = gson.fromJson(result, MyBean.class);            list = myBean.data;            mAdapter = new MyBaseAdapter(MainActivity.this, list);            listView.setAdapter(mAdapter);            //每次请求完数据通知适配器数据改变            mAdapter.notifyDataSetChanged();            //通知listview刷新完成            listView.onRefreshComplete();        }    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.main, menu);        return true;    }![下拉刷新的效果](http://img.blog.csdn.net/20160331205125714)