viewparger轮播.

package com.example.app15;

import android.annotation.SuppressLint;
import android.icu.text.SimpleDateFormat;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Handler;
import android.os.Message;
import android.support.annotation.RequiresApi;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;

import com.bawei.jane.mxlistview.view.XListView;
import com.google.gson.Gson;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.sql.Date;
import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private XListView xlist;
    private ViewPager viewparger;
    private  String urlpath="http://www.93.gov.cn/93app/data.do?channelId=0&startNum=";
    private  int q=1;
    private int p=0;
    private  String url=urlpath+q;
    private List<User2.DataBean> data1=new ArrayList<>();
    @SuppressLint("HandlerLeak")
    private Handler handler=new Handler(){
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if (msg.what==0)
            {
                int item = viewparger.getCurrentItem();
                viewparger.setCurrentItem(item+1);
                handler.sendEmptyMessageDelayed(0,2000);
            }
        }
    };
    private Myadapter1 adapter;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        viewparger = findViewById(R.id.viewparger);
        xlist = findViewById(R.id.xlist);
        xlist.setPullRefreshEnable(true);
        xlist.setPullLoadEnable(true);
        MyTask myTask = new MyTask();
        myTask.execute("http://www.93.gov.cn/93app/data.do?channelId=0&startNum=0");
        MyTosk myTosk = new MyTosk();
        myTosk.execute(url);
        xlist.setXListViewListener(new XListView.IXListViewListener() {
            @Override
            public void onRefresh() {
                p=1;
                q=0;
                url=urlpath+q;
                MyTosk myTosk = new MyTosk();
                myTosk.execute(url);


            }

            @Override
            public void onLoadMore() {
                p=2;
                q++;
                url=urlpath+q;
                MyTosk myTosk = new MyTosk();
                myTosk.execute(url);
            }
        });


    }
    class MyTask extends AsyncTask<String,Void,String>{


        @Override
        protected String doInBackground(String... strings) {
           StringBuilder builder=new StringBuilder();
            try {
                URL url=new URL(strings[0]);
                HttpURLConnection urlConnection =(HttpURLConnection) url.openConnection();
                urlConnection.setRequestMethod("GET");
                urlConnection.setConnectTimeout(5000);
                urlConnection.setReadTimeout(5000);
                if (urlConnection.getResponseCode()==200)
                {
                    InputStream inputStream = urlConnection.getInputStream();
                    BufferedReader reader=new BufferedReader(new InputStreamReader(inputStream));
                    String str="";
                    while ((str=reader.readLine())!=null)
                    {
                        builder.append(str);
                    }
                }

            } catch (Exception e) {
                e.printStackTrace();
            }
            Log.i("eee","eee"+builder.toString());
            return builder.toString();

        }
        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            Gson gson = new Gson();
            User user = gson.fromJson(s, User.class);
            List<User.DataScrollBean> dataScroll = user.getDataScroll();
            List<String> list = new ArrayList<String>();
            for (int i = 0; i <dataScroll.size() ; i++) {
                list.add("http://www.93.gov.cn"+dataScroll.get(i).getIMAGEURL());

            }
            Myadapter myadapter = new Myadapter(MainActivity.this,list);
            viewparger.setAdapter(myadapter);
            handler.sendEmptyMessageDelayed(0,2000);




        }
    }
    class MyTosk extends  AsyncTask<String, Void,String>{

        @Override
        protected String doInBackground(String... strings) {
            StringBuilder builder=new StringBuilder();
            try {
                URL url=new URL(strings[0]);
                HttpURLConnection urlConnection =(HttpURLConnection) url.openConnection();
                urlConnection.setRequestMethod("GET");
                urlConnection.setConnectTimeout(5000);
                urlConnection.setReadTimeout(5000);
                if (urlConnection.getResponseCode()==200)
                {
                    InputStream inputStream = urlConnection.getInputStream();
                    BufferedReader reader=new BufferedReader(new InputStreamReader(inputStream));
                    String str="";
                    while ((str=reader.readLine())!=null)
                    {
                        builder.append(str);
                    }
                }

            } catch (Exception e) {
                e.printStackTrace();
            }
            Log.i("aaa","aaa"+builder.toString());
            return builder.toString();

        }

        @RequiresApi(api = Build.VERSION_CODES.N)
        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            Gson gson = new Gson();
            User2 user2 = gson.fromJson(s, User2.class);

            if (p==1)
            {
                data1.clear();
            }
            data1.addAll(user2.getData());
            setadapter();
            if (p==1)
            {
                xlist.stopRefresh();
                Date date=new Date(System.currentTimeMillis());
                SimpleDateFormat sf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                String refreshTime = sf.format(date);
                xlist.setRefreshTime(refreshTime);//设置刷新时间
            }
            else {

                xlist.stopLoadMore();
            }



        }

    }
    public  void setadapter()
    {
        if (adapter==null) {
                adapter = new Myadapter1(MainActivity.this,data1);
                xlist.setAdapter(adapter);
        }
        else {
            xlist.deferNotifyDataSetChanged();
        }

    }
}