下拉刷新--第三方开源--PullToRefresh

效果预览图：

下载地址：https://github.com/chrisbanes/Android-PullToRefresh

activity_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"
    tools:context="com.zzw.testpulltorefresh.MainActivity" >

    <com.handmark.pulltorefresh.library.PullToRefreshListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</RelativeLayout>

MainActuvity.java:

package com.zzw.testpulltorefresh;

import java.util.ArrayList;
import java.util.Date;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.PullToRefreshListView;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.SystemClock;
import android.widget.Adapter;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends Activity {

    private PullToRefreshListView listView;
    private ArrayList<String> data;
    private ArrayAdapter adapter;
    private int count = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        data = new ArrayList<String>();

        listView = (PullToRefreshListView) findViewById(R.id.listView);
        // 设置向下滑动时刷新
         listView.setMode(Mode.PULL_FROM_START);
        // 支持下拉和上拉  listView.setMode(Mode.BOTH);    
        // 设置监听
        listView.setOnRefreshListener(new OnRefreshListener<ListView>() {

            @Override
            public void onRefresh(PullToRefreshBase<ListView> refreshView) {
                // 在这完成业务逻辑
                new MyAsyncTask().execute();
            }
        });

        adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, data);
        listView.setAdapter(adapter);

        // 设置如果数据为空的时候显示什么
        TextView textView = new TextView(this);
        textView.setText("请下拉刷新");
        listView.setEmptyView(textView);
    }

    private class MyAsyncTask extends AsyncTask {

        @Override
        protected void onPreExecute() {
            // 开始刷新
            listView.setRefreshing();
        }

        @Override
        protected Object doInBackground(Object... params) {
            // 假设耗时时间为3秒
            SystemClock.sleep(3000);
            return count++;
        }

        @Override
        protected void onPostExecute(Object result) {

            data.add(0, result + "");
            adapter.notifyDataSetChanged();

            // 设置标签
            listView.setLastUpdatedLabel("最后更新新的时间：" + new Date());

            // 刷新完成
            listView.onRefreshComplete();
            Toast.makeText(getApplicationContext(), "加载成功", 0).show();
        }
    }

}