使用android自带的SwipeRefreshLayout实现下拉刷新

MainActivity.java<span style="font-family:Arial;">package com.hnpolice.luoxiaoke.swiperefreshlayout;

import android.os.Bundle;
import android.os.Handler;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import java.util.ArrayList;
import java.util.List;

import butterknife.ButterKnife;
import butterknife.InjectView;

public class MainActivity extends AppCompatActivity implements SwipeRefreshLayout.OnRefreshListener {


    @InjectView(R.id.list_view)
    ListView listView;
    @InjectView(R.id.refresh_layout)
    SwipeRefreshLayout refreshLayout;

    //下拉刷新状态
    private static final int REFRESH_COMPLETE = 110;

    private List<String> datas = new ArrayList<>();

    private ArrayAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.inject(this);
        // Set the listener to be notified when a refresh is triggered via the swipe gesture.
        refreshLayout.setOnRefreshListener(this);
        // Set the colors used in the progress animation.
        refreshLayout.setColorSchemeResources(R.color.color_blue, R.color.color_green, R.color.color_red);

        for (int i = 0; i < 5; i++) {
            datas.add("item" + i);
        }

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

    }

    @Override
    public void onRefresh() {
        //2000  ： 2s后执行
        mHandler.sendEmptyMessageDelayed(REFRESH_COMPLETE, 2000);
    }

    private Handler mHandler = new Handler() {
        public void handleMessage(android.os.Message msg) {
            switch (msg.what) {
                case REFRESH_COMPLETE:
                    datas.add("added");
                    adapter.notifyDataSetChanged();
                    refreshLayout.setRefreshing(false);
                    break;

            }
        }
    };
}</span><span style="font-family:Consolas;">
</span>activity_main.xml<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/refresh_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ListView
        android:id="@+id/list_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</android.support.v4.widget.SwipeRefreshLayout>


colors.xml<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>

    <color name="color_red">#ff0000</color>
    <color name="color_green">#00ff00</color>
    <color name="color_blue">#0000ff</color>
</resources>

工程下载地址：http://download.csdn.net/detail/lxk_1993/9375711