Android下拉刷新上拉更多瀑布流(附源码)

package com.fay.pullwaterfall;import java.util.ArrayList;
import java.util.List;import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Display;
import android.view.LayoutInflater;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;import com.android.volley.RequestQueue;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.ImageLoader.ImageListener;
import com.android.volley.toolbox.Volley;
import com.fay.pullwaterfall.PullToRefreshView.OnFooterRefreshListener;
import com.fay.pullwaterfall.PullToRefreshView.OnHeaderRefreshListener;
/*** waterfall with refreshing and loading more* &＃64;since 2014/05/26* &＃64;author Fay* {&＃64;link 1940125001&＃64;qq.com}*/
public class MainActivity extends Activity implements OnHeaderRefreshListener,OnFooterRefreshListener {private String TAG &＃61; "MainActivity";private Display display &＃61; null;/*** the width of item*/private int itemWidth &＃61; 0;/*** the count of every column*/private int column_count &＃61; 2;/*** refresh for message.what*/private final int MSG_WHAT_REFRESH &＃61; 1;/*** load more for message.what*/private final int MSG_WHAT_MORE &＃61; 2;/*** refresh or load more view*/private PullToRefreshView mPullToRefreshView &＃61; null;/*** the list of children containers*/private ArrayList containerList &＃61; null;/*** the whole container for waterfall*/private LinearLayout waterfallContainer &＃61; null;/*** open source dealing with photos*/private ImageLoader mImageLoader &＃61; null;/*** the current list of image&＃39;s URLs*/private List currentDownloadList &＃61; new ArrayList();/*** the total list of images&＃39;s URLs*/private List imageUrlsList &＃61; new ArrayList();&＃64;Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main1);RequestQueue mQueue &＃61; Volley.newRequestQueue(getApplicationContext());mImageLoader &＃61; new ImageLoader(mQueue, BitmapCache.getInstance());initData();initView();}/*** initialize the view*/private void initView() {mPullToRefreshView &＃61; (PullToRefreshView) findViewById(R.id.main_pull_refresh_view);mPullToRefreshView.setOnHeaderRefreshListener(this);mPullToRefreshView.setOnFooterRefreshListener(this);display &＃61; this.getWindowManager().getDefaultDisplay();itemWidth &＃61; display.getWidth() / column_count;waterfallContainer &＃61; (LinearLayout) this.findViewById(R.id.waterfall_container);containerList &＃61; new ArrayList();for (int i &＃61; 0; i ) {LinearLayout itemLayout &＃61; new LinearLayout(this);LinearLayout.LayoutParams itemParam &＃61; new LinearLayout.LayoutParams(itemWidth, LayoutParams.WRAP_CONTENT);itemLayout.setPadding(2, 2, 2, 2);itemLayout.setOrientation(LinearLayout.VERTICAL);itemLayout.setLayoutParams(itemParam);containerList.add(itemLayout);waterfallContainer.addView(itemLayout);}addItemsToContainer(currentDownloadList);}/*** to refresh waterfall * &＃64;param List imgNameList*/public void refreshContainer(List imgNameList) {int columnNumber &＃61; 0;imageUrlsList.clear();imageUrlsList.addAll(imgNameList);//remove all children imagesfor (int index &＃61; 0; index ) {containerList.get(index).removeAllViews();}for (int index &＃61; 0; index ) {//check the current column index by the position of the listcolumnNumber &＃61; index % column_count; addImage(imageUrlsList.get(index), columnNumber);}}/*** add items to waterfall* &＃64;param imgNameList*/public void addItemsToContainer(List imgNameList) {int columnNumber &＃61; 0;int usualListLength &＃61; imageUrlsList.size();imageUrlsList.addAll(imgNameList);for (int index &＃61; usualListLength; index ) {//check the current column index by the position of the listcolumnNumber &＃61; index % column_count; addImage(imageUrlsList.get(index), columnNumber);}}/*** add ImageView into container* &＃64;param String url* &＃64;param int columnIndex*/private void addImage(String url, int columnIndex) {ImageView itemImage &＃61; (ImageView) LayoutInflater.from(this).inflate(R.layout.waterfallitem, null);ImageListener listener &＃61; ImageLoader.getImageListener(itemImage, R.drawable.default_photo, R.drawable.default_photo);mImageLoader.get(url, listener);containerList.get(columnIndex).addView(itemImage);}&＃64;Overridepublic void onFooterRefresh(PullToRefreshView view) {new Thread(){public void run() {try {//to do network taskThread.sleep(1000);mHandler.sendEmptyMessage(MSG_WHAT_MORE);} catch (Exception e) {e.printStackTrace();}}}.start();}&＃64;Overridepublic void onHeaderRefresh(PullToRefreshView view) {new Thread() {public void run() {try {//to do network taskThread.sleep(1000);mHandler.sendEmptyMessage(MSG_WHAT_REFRESH);} catch (Exception e) {e.printStackTrace();}}}.start();}private Handler mHandler &＃61; new Handler() {&＃64;Overridepublic void handleMessage(Message msg) {switch (msg.what) {case MSG_WHAT_MORE:mPullToRefreshView.onFooterRefreshComplete();addItemsToContainer(currentDownloadList);break;case MSG_WHAT_REFRESH:mPullToRefreshView.onHeaderRefreshComplete();refreshContainer(currentDownloadList);break;}}};/*** initialize the static URLs just for test.*/private void initData() {currentDownloadList.add("http://g.hiphotos.baidu.com/album/w%3D230/sign&＃61;a94d197c8435e5dd902ca2dc46c7a7f5/838ba61ea8d3fd1fa7bb5b14314e251f95ca5f6a.jpg");currentDownloadList.add("http://e.hiphotos.baidu.com/album/w%3D230/sign&＃61;af9a677a024f78f0800b9df049300a83/4d086e061d950a7b567fb7ea0bd162d9f2d3c952.jpg");currentDownloadList.add("http://e.hiphotos.baidu.com/album/w%3D230/sign&＃61;9c6ef885023b5bb5bed727fd06d3d523/b90e7bec54e736d19b7475269a504fc2d56269bd.jpg");currentDownloadList.add("http://a.hiphotos.baidu.com/album/w%3D230/sign&＃61;b540585248540923aa69647da259d1dc/c9fcc3cec3fdfc03aab445c9d53f8794a5c226f6.jpg");currentDownloadList.add("http://b.hiphotos.baidu.com/album/w%3D230/sign&＃61;d0765733622762d0803ea3bc90ed0849/359b033b5bb5c9ea6c54ebf3d439b6003af3b37f.jpg");currentDownloadList.add("http://g.hiphotos.baidu.com/album/w%3D230/sign&＃61;e6fc366555e736d158138b0bab514ffc/cdbf6c81800a19d8e2ccfcbc32fa828ba71e46bf.jpg");currentDownloadList.add("http://e.hiphotos.baidu.com/album/w%3D230/sign&＃61;e640c2ea1ad5ad6eaaf963e9b1cb39a3/42a98226cffc1e17bed9751f4b90f603738de9be.jpg");currentDownloadList.add("http://f.hiphotos.baidu.com/album/w%3D230/sign&＃61;6cc9612a5882b2b7a79f3ec701accb0a/2cf5e0fe9925bc3191edf8b65fdf8db1cb137068.jpg");currentDownloadList.add("http://f.hiphotos.baidu.com/album/w%3D230/sign&＃61;e0331d0d72f082022d92963c7bfafb8a/9f2f070828381f30a45c7487a8014c086e06f053.jpg");}}