简单PullToRefreshListView+ViewPager无限轮播

//主布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout    android:id="@+id/llll"    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"    android:layout_height="match_parent" tools:context="com.example.lxb.MainActivity"><com.handmark.pulltorefresh.library.PullToRefreshListView    android:layout_width="match_parent"    android:layout_height="match_parent"    android:id="@+id/pt"    ></com.handmark.pulltorefresh.library.PullToRefreshListView></LinearLayout>

//viewpager 的布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    >    <android.support.v4.view.ViewPager        android:layout_width="match_parent"        android:layout_height="300dp"        android:id="@+id/vp"        ></android.support.v4.view.ViewPager>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/ll"        android:orientation="horizontal"        ></LinearLayout></LinearLayout>
//listview展示数据的布局

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    ><ImageView    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:id="@+id/img"    />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:id="@+id/name"        /></LinearLayout>
//代码

package com.example.lxb;import android.os.AsyncTask;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.ListView;import android.widget.TextView;import com.google.gson.Gson;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshListView;import com.nostra13.universalimageloader.core.ImageLoader;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.MalformedURLException;import java.net.URL;import java.net.URLConnection;import java.util.ArrayList;import java.util.List;public class MainActivity extends AppCompatActivity {    private PullToRefreshListView pt;    private ViewPager vp;    List<User> list=new ArrayList<User>();    int i=1;    private MainActivity.ptdata ptdata;    private ArrayList<ImageView> imagelist;    private LinearLayout ll;    private ImageView view;
//延时    Handler handler=new Handler(){        @Override        public void handleMessage(Message msg) {            super.handleMessage(msg);            int i = vp.getCurrentItem() + 1;            vp.setCurrentItem(i);            handler.sendEmptyMessageDelayed(0,2000);        }    };    private List<Bean.NewslistBean> newslist;    private LinearLayout lll;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        pt =(PullToRefreshListView)findViewById(R.id.pt);        View view = View.inflate(MainActivity.this, R.layout.vp, null);        vp=(ViewPager)view.findViewById(R.id.vp);        ll =(LinearLayout)view.findViewById(R.id.ll);        ListView listView = pt.getRefreshableView();        listView.addHeaderView(view);        pt.setMode(PullToRefreshBase.Mode.BOTH);        ptdata = new ptdata();        pt.setAdapter(ptdata);        handler.sendEmptyMessageDelayed(0,2000);        //异步线程操作        new Mysanysk().execute("https://api.tianapi.com/wxnew/?key=8d6e3228d25298f13af4fc40ce6c9679&num=10");        pt.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {            @Override            public void onPullDownToRefresh(PullToRefreshBase<ListView> refreshView) {              ll.removeAllViews();                list.clear();                i=1;                new Mysanysk().execute("https://api.tianapi.com/wxnew/?key=8d6e3228d25298f13af4fc40ce6c9679&num=10");                ptdata.notifyDataSetChanged();            }            @Override            public void onPullUpToRefresh(PullToRefreshBase<ListView> refreshView) {               i++;                new Mysanysk().execute("https://api.tianapi.com/wxnew/?key=8d6e3228d25298f13af4fc40ce6c9679&num="+i);            }        });       vp.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {            @Override            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {            }            @Override            public void onPageSelected(int position) {                for (int i=0;i<imagelist.size();i++){                    if(position%newslist.size()==i){                        imagelist.get(position%newslist.size()).setImageResource(R.drawable.dot_focus);                    }else{                        imagelist.get(i).setImageResource(R.drawable.dot_normal);                    }                }            }            @Override            public void onPageScrollStateChanged(int state) {            }        });    }//加点方法    private void nodata() {        imagelist =new ArrayList<ImageView>();        if(imagelist!=null){            imagelist.clear();        }        for (int i=0;i<newslist.size();i++){            view = new ImageView(this);            if(i==vp.getCurrentItem()){                view.setImageResource(R.drawable.dot_focus);            }else{                view.setImageResource(R.drawable.dot_normal);            }            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(20, 20);            params.setMargins(10,0,10,0);            imagelist.add(view);            ll.addView(view,params);        }    }    class Mysanysk extends AsyncTask<String,Void,String>{        private URL url;        private StringBuilder builder;        @Override        protected String doInBackground(String... strings) {             try {                 url = new URL(strings[0]);                 URLConnection connection = url.openConnection();                                 InputStream stream = connection.getInputStream();                                 BufferedReader reader = new BufferedReader(new InputStreamReader(stream));                                  builder = new StringBuilder();                                 String tem="";                                 while((tem=reader.readLine())!=null){                                     builder.append(tem);                                 }                             } catch (MalformedURLException e) {                                 e.printStackTrace();                             } catch (IOException e) {                                 e.printStackTrace();                             }            Log.e("=======读取到的数据==========",builder.toString());            return builder.toString();        }        @Override        protected void onPostExecute(String s) {            super.onPostExecute(s);            Gson gson = new Gson();            Bean bean = gson.fromJson(s, Bean.class);            newslist = bean.getNewslist();            for (int i = 0; i< newslist.size(); i++){                String picUrl = newslist.get(i).getPicUrl();                String title = newslist.get(i).getTitle();                list.add(new User(title,picUrl));            }            vp.setAdapter(new vpdata());            nodata();            ptdata.notifyDataSetChanged();//刷新适配器            pt.onRefreshComplete();//关闭方法        }    }    class ptdata extends BaseAdapter{        @Override        public int getCount() {            return list.size();        }        @Override        public Object getItem(int i) {            return list.get(i);        }        @Override        public long getItemId(int i) {            return i;        }        @Override        public View getView(int i, View view, ViewGroup viewGroup) {            ViewHolder vh;            if(view==null){                vh=new ViewHolder();                view=View.inflate(MainActivity.this,R.layout.textview,null);                vh.name=(TextView)view.findViewById(R.id.name);                vh.img=(ImageView)view.findViewById(R.id.img);                view.setTag(vh);            }else{                vh=(ViewHolder)view.getTag();            }            vh.name.setText(list.get(i).name);            ImageLoader.getInstance().displayImage(list.get(i).url,vh.img);            return view;        }        class ViewHolder{            TextView name;            ImageView img;        }    }  class vpdata extends PagerAdapter {        @Override        public int getCount() {            return Integer.MAX_VALUE;        }        @Override        public boolean isViewFromObject(View view, Object object) {            return view==object;        }      @Override      public Object instantiateItem(ViewGroup container, int position) {              String picUrl = newslist.get(position%newslist.size()).getPicUrl();              View view = View.inflate(MainActivity.this,R.layout.vptextview,null);              ImageView img=(ImageView)view.findViewById(R.id.img2);              ImageLoader.getInstance().displayImage(picUrl,img);            container.addView(view);            return view;      }      @Override      public void destroyItem(ViewGroup container, int position, Object object) {          container.removeView((View)object);  }    }}