ViewPager与pilltoRefresh(上下拉加载)与webview

//主方法

import android.content.Intent;import android.os.AsyncTask;import android.os.Handler;import android.os.Message;import android.support.v4.view.ViewPager;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.ListView;import com.example.moniyuekao_20171220_2.Adapter.MyAdapter;import com.example.moniyuekao_20171220_2.Adapter.MyFragAdapter;import com.example.moniyuekao_20171220_2.Utils.JieXiUtils;import com.example.moniyuekao_20171220_2.bean.Bean;import com.google.gson.Gson;import com.handmark.pulltorefresh.library.PullToRefreshBase;import com.handmark.pulltorefresh.library.PullToRefreshListView;import com.handmark.pulltorefresh.library.PullToRefreshScrollView;import java.util.List;public class MainActivity extends AppCompatActivity{    private String path="http://v.juhe.cn/toutiao/index?type=top&key=dbedecbcd1899c9785b95cc2d17131c5";    //private String path="http://v.juhe.cn/toutiao/index?type=top&key=f628e84fadf97a32dfc6323c7d89e15b";    private ViewPager vp;    private PullToRefreshListView plv;    private PullToRefreshScrollView psv;    private List<Bean.ResultBean.DataBean> data;    private MyAdapter adapter;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        vp=(ViewPager)findViewById(R.id.vp);        plv=(PullToRefreshListView)findViewById(R.id.plv);        //plv=(ListView)findViewById(R.id.plv);        //psv=(PullToRefreshScrollView)findViewById(R.id.psv);        new AsyncTask<String,String,String>(){            @Override            protected String doInBackground(String... params) {                String getstr = JieXiUtils.getstr(path);                return getstr;            }            @Override            protected void onPostExecute(String s) {                super.onPostExecute(s);                Gson gson=new Gson();                Bean bean = gson.fromJson(s, Bean.class);                data = bean.getResult().getData();                adapter=new MyAdapter(MainActivity.this,data);                plv.setAdapter(adapter);                //webview点击加载网页                plv.setOnItemClickListener(new AdapterView.OnItemClickListener() {                    @Override                    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                        Intent in=new Intent(MainActivity.this,Main2Activity.class);                        in.putExtra("url",data.get(position).getUrl());                        startActivity(in);                    }                });                //下拉加载                plv.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener<ListView>() {                    @Override                    public void onRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {                        new Thread(){                            @Override                            public void run() {                                super.run();                                String getstrs = JieXiUtils.getstr(path);                                Gson gson=new Gson();                                Bean bean = gson.fromJson(getstrs, Bean.class);                                final List<Bean.ResultBean.DataBean> todata = bean.getResult().getData();                                runOnUiThread(new Runnable() {                                    @Override                                    public void run() {                                        data.addAll(0,todata);                                        if(adapter!=null){                                            adapter.notifyDataSetChanged();                                            plv.onRefreshComplete();                                        }                                    }                                });                            }                        }.start();                    }                });                //上拉刷新//                plv.setOnLastItemVisibleListener(new PullToRefreshBase.OnLastItemVisibleListener() {//                    @Override//                    public void onLastItemVisible() {//                        //                    }//                });                vp.setAdapter(new MyFragAdapter(MainActivity.this,data));                vp.setCurrentItem(100000);                initData();            }            public Handler handle=new Handler(){                @Override                public void handleMessage(Message msg) {                    super.handleMessage(msg);                    int item = vp.getCurrentItem();                    item++;                    vp.setCurrentItem(item);                    initData();                }            };            private void initData() {                handle.sendEmptyMessageDelayed(1,2000);            }        }.execute();    }}

//主方法布局

<RelativeLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    android:layout_width="match_parent"    android:id="@+id/psv"    android:layout_height="match_parent">    <LinearLayout        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="150dp"        android:id="@+id/vp"></android.support.v4.view.ViewPager>     <com.handmark.pulltorefresh.library.PullToRefreshListView         android:layout_width="match_parent"         android:layout_height="match_parent"         android:id="@+id/plv"></com.handmark.pulltorefresh.library.PullToRefreshListView></LinearLayout>    </RelativeLayout><!--<com.example.day20171218_yuekaomoni_1.MyListView--><!--android:layout_width="match_parent"--><!--android:layout_height="match_parent"--><!--android:id="@+id/plv"></com.example.day20171218_yuekaomoni_1.MyListView>--><!--<com.handmark.pulltorefresh.library.PullToRefreshScrollView--><!--xmlns:android="http://schemas.android.com/apk/res/android"--><!--xmlns:app="http://schemas.android.com/apk/res-auto"--><!--android:layout_width="match_parent"--><!--android:id="@+id/psv"--><!--android:layout_height="match_parent">-->
//第二个页面（也就是webview页面）
//方法

import android.content.Intent;import android.os.Bundle;import android.support.annotation.Nullable;import android.support.v7.app.AppCompatActivity;import android.webkit.WebView;/** * Created by lenovo on 2017/12/20. */public class Main2Activity extends AppCompatActivity{    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main2);        Intent intent = getIntent();        String url = intent.getStringExtra("url");        WebView wv = (WebView) findViewById(R.id.wv);        wv.getSettings().setJavaScriptEnabled(true);        wv.loadUrl(url);    }}

//布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <WebView        android:id="@+id/wv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"></WebView></LinearLayout>

//ViewPage适配器

import android.content.Context;import android.support.v4.view.PagerAdapter;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import com.example.moniyuekao_20171220_2.bean.Bean;import com.nostra13.universalimageloader.core.DisplayImageOptions;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.List;/** * Created by lenovo on 2017/12/20. */public class MyFragAdapter extends PagerAdapter{    private Context con;    private List<Bean.ResultBean.DataBean> list;    public MyFragAdapter(Context con,List<Bean.ResultBean.DataBean> list) {        this.con = con;        this.list = list;    }    @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) {        ImageView img=new ImageView(con);        ImageLoader.getInstance().displayImage(list.get(position%list.size()).getThumbnail_pic_s(),img);        container.addView(img);        return img;    }    @Override    public void destroyItem(ViewGroup container, int position, Object object) {        container.removeView((View) object);    }}

//ListView适配器

import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;import com.example.moniyuekao_20171220_2.R;import com.example.moniyuekao_20171220_2.bean.Bean;import com.nostra13.universalimageloader.core.DisplayImageOptions;import com.nostra13.universalimageloader.core.ImageLoader;import java.util.List;/** * Created by lenovo on 2017/12/20. */public class MyAdapter extends BaseAdapter{    private Context con;    private List<Bean.ResultBean.DataBean> list;    public MyAdapter(Context con,List<Bean.ResultBean.DataBean> list) {        this.con = con;        this.list = list;    }    @Override    public int getItemViewType(int position) {        if(list.get(position).getThumbnail_pic_s03()!=""&&list.get(position).getThumbnail_pic_s02()!=""){                     return 0;        }else if(list.get(position).getThumbnail_pic_s02()!=""){                     return 1;        }else {                    return 2;        }    }    @Override    public int getViewTypeCount() {        return 3;    }    @Override    public int getCount() {        return list.size();    }    @Override    public Object getItem(int position) {        return list.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        ViewHolder holder;        int type = getItemViewType(position);        switch (type){            case 0:                if(convertView==null){                    convertView=View.inflate(con, R.layout.layout_xx1,null);                    holder=new ViewHolder();                    holder.img1=(ImageView)convertView.findViewById(R.id.img_1_1);                    holder.img2=(ImageView)convertView.findViewById(R.id.img_1_2);                    holder.img3=(ImageView)convertView.findViewById(R.id.img_1_3);                    holder.name=(TextView)convertView.findViewById(R.id.text1);                    convertView.setTag(holder);                }else {                    holder=(ViewHolder)convertView.getTag();                }                    holder.name.setText(list.get(position).getTitle());                ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s(),holder.img1);                ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s02(),holder.img2);                ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s03(),holder.img3);                break;            case 1:                if(convertView==null){                    convertView=View.inflate(con, R.layout.layout_xx2,null);                    holder=new ViewHolder();                    holder.img1=(ImageView)convertView.findViewById(R.id.img_2_1);                    holder.img2=(ImageView)convertView.findViewById(R.id.img_2_2);                    holder.name=(TextView)convertView.findViewById(R.id.text2);                    convertView.setTag(holder);                }else {                    holder=(ViewHolder)convertView.getTag();                }                holder.name.setText(list.get(position).getTitle());                ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s(),holder.img1);                ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s02(),holder.img2);                break;            case 2:                if(convertView==null){                    convertView=View.inflate(con, R.layout.layout_xx1,null);                    holder=new ViewHolder();                    holder.img1=(ImageView)convertView.findViewById(R.id.img_3);                    holder.name=(TextView)convertView.findViewById(R.id.text3);                    convertView.setTag(holder);                }else {                    holder=(ViewHolder)convertView.getTag();                }                holder.name.setText(list.get(position).getTitle());                ImageLoader.getInstance().displayImage(list.get(position).getThumbnail_pic_s(),holder.img1);                break;        }        return convertView;    }    public class ViewHolder{        private TextView name;        private ImageView img1;        private ImageView img2;        private ImageView img3;    }}

//多条目

//条目一

//布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/text1"/>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <ImageView            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="wrap_content"            android:id="@+id/img_1_1"/>        <ImageView            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="wrap_content"            android:id="@+id/img_1_2"/>        <ImageView            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="wrap_content"            android:id="@+id/img_1_3"/>    </LinearLayout></LinearLayout>

//条目二布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/text2"/>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <ImageView            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="wrap_content"            android:id="@+id/img_2_1"/>        <ImageView            android:layout_width="0dp"            android:layout_weight="1"            android:layout_height="wrap_content"            android:id="@+id/img_2_2"/>    </LinearLayout></LinearLayout>

//条目三布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="match_parent"    android:layout_height="match_parent">    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/text3"/>    <ImageView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:id="@+id/img_3"/></LinearLayout>

//获取gson串

import java.io.ByteArrayOutputStream;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;/** * Created by lenovo on 2017/12/20. */public class JieXiUtils {    private static ByteArrayOutputStream baos;    public static String getstr(String path){        try {            URL url=new URL(path);            HttpURLConnection urlConnection = (HttpURLConnection)url.openConnection();            urlConnection.setRequestMethod("GET");            urlConnection.setConnectTimeout(3000);            int code = urlConnection.getResponseCode();            if(code==200){                InputStream stream = urlConnection.getInputStream();                baos=new ByteArrayOutputStream();                int len=0;                byte[] arr=new byte[1024*50];                while ((len=stream.read(arr))!=-1){                    baos.write(arr,0,len);                }                return baos.toString();            }        } catch (Exception e) {            e.printStackTrace();        }        return null;    }}
//配置文件
<manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.moniyuekao_20171220_2">    <uses-permission android:name="android.permission.INTERNET"></uses-permission>    <application        android:name=".Application.ImageApplication"        android:allowBackup="true" android:icon="@mipmap/ic_launcher"        android:label="@string/app_name" android:roundIcon="@mipmap/ic_launcher_round"        android:supportsRtl="true" android:theme="@style/AppTheme">        <activity android:name=".MainActivity">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>        <activity android:name=".Main2Activity"></activity>    </application></manifest>
//依赖
compile 'com.github.userswlwork:pull-to-refresh:1.0.0'
//上下拉
//补充一下
//下面的是一个可以全局加载的代码内容（自定义了一个listview,在主布局文件里将listview改为包名加类名，
//将总布局改为com.handmark.pulltorefresh.library.PullToRefreshScrollView,其他不变即可）
public class MyListView extends ListView{    public MyListView(Context context, AttributeSet attrs) {        super(context, attrs);    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        int i = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE>>2,MeasureSpec.AT_MOST);        super.onMeasure(widthMeasureSpec, i);    }}