Android PullToRefreshListView和ViewPager的结合使用

其实这个不是什么新东西了，在介绍（一）中我们就知道了PullToRefreshListView的用法，这里只要将其放入到ViewPager中就行啦。ViewPager还是和以往一样的定义和使用，在适配器中存视图的时候放入PullToRefreshListView就行。

1.ViewPager的布局文件

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" android:background="#000000"><!-- The PullToRefreshListView replaces a standard ListView widget. --><android.support.v4.view.ViewPagerandroid:id="@+id/vp_list"android:layout_width="fill_parent"android:layout_height="fill_parent" /></LinearLayout>

2.找到ViewPager并设置适配器

private void initViewPager() {// TODO 自动生成的方法存根mViewPager = (ViewPager) findViewById(R.id.vp_list);//得到设置好的view列表ArrayList<View> viewList = setListViewInVp();mViewPager.setAdapter(new ListViewPagerAdapter(viewList));}

适配器：

/*** @author:Jack Tony* @tips  :viewPager的适配器* @date  :2014-10-14*/public class ListViewPagerAdapter extends PagerAdapter {//设置list数组，传入viewprivate ArrayList<View> mViewList;private int pagerNum = 0;public ListViewPagerAdapter(ArrayList<View> viewList) {mViewList = viewList;}public int getPagerNum() {return pagerNum;}@Overridepublic int getCount() {return mViewList.size();}@Overridepublic boolean isViewFromObject(View view, Object object) {return view == object;}@Overridepublic void destroyItem(View arg0, int position, Object object) {if (mViewList.get(position) != null) {((ViewPager) arg0).removeView(mViewList.get(position));}}@Overridepublic Object instantiateItem(View container, int position) {try {if (mViewList.get(position).getParent() == null) {((ViewPager) container).addView(mViewList.get(position), 0);} else {/** 很难理解新添加进来的view会自动绑定一个父类，由于一个儿子view不能与两个父类相关，* 所以得解绑不这样做否则会产生 viewpager java.lang.IllegalStateException:* The specified child already has a parent. You must call* removeView() on the child's parent first.*/((ViewGroup) mViewList.get(position).getParent()).removeView(mViewList.get(position));((ViewPager) container).addView(mViewList.get(position), 0);}} catch (Exception e) {e.printStackTrace();} finally {pagerNum = position;}return mViewList.get(position);}}

3.开始设置要放入viewPager中的listView

布局文件：

layout_listview_in_viewpager.xml

<?xml version="1.0" encoding="utf-8"?>
<com.handmark.pulltorefresh.library.PullToRefreshListView xmlns:android="http://schemas.android.com/apk/res/android"xmlns:ptr="http://schemas.android.com/apk/res-auto"android:layout_width="fill_parent"android:layout_height="fill_parent"ptr:ptrHeaderBackground="@android:color/darker_gray" />

java代码：

private ArrayList<View> setListViewInVp() {//设置给viewpager中填充的view列表ArrayList<View> viewList = new ArrayList<View>();//将string数组放入适配器中final String[] data = { "1", "2", "3","4", "5", "6", "7", "8", "9", "10", "11","12", "13", "14", "15", "16", "17","18", "19", "20",  };ListAdapter adapter = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1, data);//找到listView的布局，生成可以下拉刷新的listView，添加到视图列表中LayoutInflater inflater = LayoutInflater.from(getApplication());for (int i = 0; i < 4; i++) {PullToRefreshListView plv = (PullToRefreshListView) inflater.inflate(R.layout.layout_listview_in_viewpager,  null);plv.setAdapter(adapter);plv.setOnRefreshListener(new OnRefreshListener<ListView>() {@Overridepublic void onRefresh(PullToRefreshBase<ListView> refreshView) {// TODO 自动生成的方法存根new GetDataTask(refreshView).execute();}});viewList.add(plv);}return viewList;}

4.定义异步任务

private static class GetDataTask extends AsyncTask<Void, Void, Void> {PullToRefreshBase<?> mRefreshedView;public GetDataTask(PullToRefreshBase<?> refreshedView) {mRefreshedView = refreshedView;}@Overrideprotected Void doInBackground(Void... params) {// Simulates a background job.try {Thread.sleep(2000);} catch (InterruptedException e) {}return null;}@Overrideprotected void onPostExecute(Void result) {mRefreshedView.onRefreshComplete();super.onPostExecute(result);}}

MainActivity.java的全部代码

package com.example.ptrlistviewinviewpagertest;import java.util.ArrayList;import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.PullToRefreshListView;public class MainActivity extends Activity {private ViewPager mViewPager;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();}private void initView() {// TODO 自动生成的方法存根
        initViewPager();}private void initViewPager() {// TODO 自动生成的方法存根mViewPager = (ViewPager) findViewById(R.id.vp_list);//得到设置好的view列表ArrayList<View> viewList = setListViewInVp();mViewPager.setAdapter(new ListViewPagerAdapter(viewList));}private ArrayList<View> setListViewInVp() {//设置给viewpager中填充的view列表ArrayList<View> viewList = new ArrayList<View>();//将string数组放入适配器中final String[] data = { "1", "2", "3","4", "5", "6", "7", "8", "9", "10", "11","12", "13", "14", "15", "16", "17","18", "19", "20",  };ListAdapter adapter = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1, data);//找到listView的布局，生成可以下拉刷新的listView，添加到视图列表中LayoutInflater inflater = LayoutInflater.from(getApplication());for (int i = 0; i < 4; i++) {PullToRefreshListView plv = (PullToRefreshListView) inflater.inflate(R.layout.layout_listview_in_viewpager,  null);plv.setAdapter(adapter);plv.setOnRefreshListener(new OnRefreshListener<ListView>() {@Overridepublic void onRefresh(PullToRefreshBase<ListView> refreshView) {// TODO 自动生成的方法存根new GetDataTask(refreshView).execute();}});viewList.add(plv);}return viewList;}/*** @author:Jack Tony* @tips  :viewPager的适配器* @date  :2014-10-14*/public class ListViewPagerAdapter extends PagerAdapter {//设置list数组，传入viewprivate ArrayList<View> mViewList;private int pagerNum = 0;public ListViewPagerAdapter(ArrayList<View> viewList) {mViewList = viewList;}public int getPagerNum() {return pagerNum;}@Overridepublic int getCount() {return mViewList.size();}@Overridepublic boolean isViewFromObject(View view, Object object) {return view == object;}@Overridepublic void destroyItem(View arg0, int position, Object object) {if (mViewList.get(position) != null) {((ViewPager) arg0).removeView(mViewList.get(position));}}@Overridepublic Object instantiateItem(View container, int position) {try {if (mViewList.get(position).getParent() == null) {((ViewPager) container).addView(mViewList.get(position), 0);} else {/** 很难理解新添加进来的view会自动绑定一个父类，由于一个儿子view不能与两个父类相关，* 所以得解绑不这样做否则会产生 viewpager java.lang.IllegalStateException:* The specified child already has a parent. You must call* removeView() on the child's parent first.*/((ViewGroup) mViewList.get(position).getParent()).removeView(mViewList.get(position));((ViewPager) container).addView(mViewList.get(position), 0);}} catch (Exception e) {e.printStackTrace();} finally {pagerNum = position;}return mViewList.get(position);}}private static class GetDataTask extends AsyncTask<Void, Void, Void> {PullToRefreshBase<?> mRefreshedView;public GetDataTask(PullToRefreshBase<?> refreshedView) {mRefreshedView = refreshedView;}@Overrideprotected Void doInBackground(Void... params) {// Simulates a background job.try {Thread.sleep(2000);} catch (InterruptedException e) {}return null;}@Overrideprotected void onPostExecute(Void result) {mRefreshedView.onRefreshComplete();super.onPostExecute(result);}}
}

源码下载：http://download.csdn.net/detail/shark0017/8036901

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