SwipeRefreshLayout-下拉刷新控件

一、简介

目前市场上下拉刷新大部分是基于handmark的pulltorefresh这一开源项目，直接导入包即可使用下拉刷新和上拉加载功能。当然也有基于这一项目而自己改写的Viewpager，ScrollView的下拉刷新。
SwipeRefreshLayout是google官方下拉刷新组件，俗称“彩虹条”。但是官方版本只有下拉刷新而没有上拉加载更多。

二、使用SwipeRefreshLayout实现下拉刷新

显示效果如下图：

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/swipe_refresh"
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <ListView
            android:id="@+id/listview"
            android:layout_width="match_parent"
            android:layout_height="match_parent" >
        </ListView>
    </android.support.v4.widget.SwipeRefreshLayout>

</LinearLayout>

MainActivity.java

package com.demo.downrefresh;

import java.util.ArrayList;
import java.util.List;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.widget.SwipeRefreshLayout;
import android.widget.ListView;

/** * 默认的SwipeRefreshLayout只支持下拉刷新 * * @author w.w */
public class MainActivity extends Activity implements SwipeRefreshLayout.OnRefreshListener {

    /** * 给ListView添加下拉刷新 */
    private SwipeRefreshLayout swipeLayout;
    private ListView listView;
    private ListViewAdapter adapter;
    private List<ItemInfo> infoList;

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

        init();

        swipeLayout.setOnRefreshListener(this);
        // 顶部刷新的样式
        swipeLayout.setColorScheme(android.R.color.holo_red_light, android.R.color.holo_green_light, android.R.color.holo_blue_bright, android.R.color.holo_orange_light);
        //设置页面的背景，不会随着下拉加载而移动
        //swipeLayout.setBackgroundResource(R.drawable.ic_launcher);

        adapter = new ListViewAdapter(this, infoList);
        //设置ListView的背景，会随着下拉加载而移动
        //listView.setBackgroundResource(R.drawable.ic_launcher);
        listView.setAdapter(adapter);
    }

    private void init() {
        swipeLayout = (SwipeRefreshLayout) this.findViewById(R.id.swipe_refresh);
        listView = (ListView) this.findViewById(R.id.listview);
        // 填充数据
        infoList = new ArrayList<ItemInfo>();
        ItemInfo info = new ItemInfo();
        info.setName("china");
        infoList.add(info);

    }

    public void onRefresh() {
        // 显示刷新动画
        swipeLayout.setRefreshing(true);
        new Handler().postDelayed(new Runnable() {
            public void run() {
                // 刷新完毕，结束刷新动画
                swipeLayout.setRefreshing(false);
                // 刷新后增加一条数据
                ItemInfo info = new ItemInfo();
                info.setName("china-refresh");
                infoList.add(info);
                adapter.notifyDataSetChanged();
            }
        }, 500);
    }
}

三、在SwipeRefreshLayout的基础上增加上拉加载

demo来源：http://blog.csdn.net/geeklei/article/details/38876981
1.使用
实现的接口
①.setMode：设置模式参数
参数：
SwipeRefreshLayout.Mode.BOTH 支持下拉刷新和上拉加载（默认）
SwipeRefreshLayout.Mode.PULL_FROM_START 支持下拉刷新
SwipeRefreshLayout.Mode.PULL_FROM_END 支持上拉加载

②.setLoadNoFull：设置上拉加载模式
参数：
true：当数据不满一屏时，允许上拉加载
false：当数据不满一屏时，禁止上拉加载（默认）

③.setTopColor：设置顶部进度条颜色
④.setBottomColor：设置底部进度条颜色
⑤.setColor：同时设置顶部和底部进度条颜色

package com.whos.swiperefreshandload;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.view.Menu;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import java.util.ArrayList;

import com.whos.swiperefreshandload.view.SwipeRefreshLayout;
import com.whos.swiperefreshandload.view.SwipeRefreshLayout.OnLoadListener;
import com.whos.swiperefreshandload.view.SwipeRefreshLayout.OnRefreshListener;


@SuppressLint("ResourceAsColor")
public class MainActivity extends Activity implements OnRefreshListener, OnLoadListener{

    protected ListView mListView;
    private ArrayAdapter<String> mListAdapter;
    SwipeRefreshLayout mSwipeLayout;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        init();
    }
    private void init() {
         mListView = (ListView) findViewById(R.id.list);
         mListAdapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, values);
         mListView.setAdapter(mListAdapter);

         mSwipeLayout = (SwipeRefreshLayout) findViewById(R.id.swipe_container);
         mSwipeLayout.setOnRefreshListener(this);
         mSwipeLayout.setOnLoadListener(this);

       //设置颜色样式
         mSwipeLayout.setColor(android.R.color.holo_blue_bright,android.R.color.holo_green_light,android.R.color.holo_orange_light,android.R.color.holo_red_light);
         //设置支持上拉加载和下拉刷新
         mSwipeLayout.setMode(SwipeRefreshLayout.Mode.BOTH);
         //数据不满一屏幕时，禁止上拉加载
         mSwipeLayout.setLoadNoFull(false);
    }
    ArrayList<String> values = new ArrayList<String>() {{
        add("value 0");
        add("value 1");
        add("value 2");
        add("value 3");
        add("value 4");
        add("value 5");
        add("value 6");
    }};
    /** * 下拉刷新时调用 */
    @Override
    public void onRefresh() {
        values.add(0, "Add " + values.size());  //增加一条数据到顶部
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                mSwipeLayout.setRefreshing(false);
                mListAdapter.notifyDataSetChanged();
            }
        }, 2000);
    }
    /** * 上拉加载时回调 */
    @Override
    public void onLoad() {
        values.add("Add " + values.size());//增加一条数据到尾部
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                mSwipeLayout.setLoading(false);
                mListAdapter.notifyDataSetChanged();
            }
        }, 1000);
    }
}

activity_main.xml

<com.whos.swiperefreshandload.view.SwipeRefreshLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/swipe_container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ListView
        android:id="@+id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:cacheColorHint="@android:color/transparent"
        android:dividerHeight="1px"
        android:overScrollFooter="@null"
        android:background="#333333" />

</com.whos.swiperefreshandload.view.SwipeRefreshLayout>

demo下载：http://download.csdn.net/detail/z18789231876/9499655