#1Mantivity:
package com.bw.ymy.week2;

import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import me.maxwin.view.XListView;

public class one extends Fragment {
private XListView xlistview;
private MyAdapter adapter;
private int page;
private final int LOAD_COUNT=5;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view=inflater.inflate(R.layout.one,container,false);
page=1;
//獲取資源id
xlistview=view.findViewById(R.id.xlistview);
//介面卡
adapter=new MyAdapter(getActivity());
xlistview.setAdapter(adapter);
//載入
xlistview.setPullLoadEnable(true);
//重新整理
xlistview.setPullRefreshEnable(true);
return view;
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    //載入
    xlistview.setPullLoadEnable(true);
    //重新整理
    xlistview.setPullRefreshEnable(true);

    //
    xlistview.setXListViewListener(new XListView.IXListViewListener() {
        @Override
        public void onRefresh() {
            page=1;
            inflodata();

        }

        @Override
        public void onLoadMore() {
            page++;
            inflodata();
        }
    });

}
private  String  bbb="http://api.expoon.com/AppNews/getNewsList/type/1/p/%d";
private  void inflodata()
{
    Netuil.getInstance().getRequest(String.format(bbb,page),Bean.class,new Netuil.Callback<Bean>()
    {
        @Override
        public void onsuccess(Bean bean) {
            //顯示
            if(page==1)
            {
                adapter.setdata(bean.getData());
            }
            //載入
            else {
                adapter.add(bean.getData());
            }
            xlistview.stopLoadMore();
            xlistview.stopRefresh();

            //判斷
            if(bean.getData().size()<LOAD_COUNT)
            {
                xlistview.setPullLoadEnable(false);
            }
        }
    });
}
}
 

#2Adapter:
package com.bw.ymy.week2;

import android.content.Context;
import android.graphics.Bitmap;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.assist.ImageScaleType;
import com.nostra13.universalimageloader.core.display.CircleBitmapDisplayer;

import java.util.ArrayList;
import java.util.List;

public class MyAdapter extends BaseAdapter {
private List<Bean.DataBean> mdata;
private Context context;
private static final int ITEM_COUNT = 2;
private static final int TT_ITEM = 0;
private static final int GN_ITEM = 1;

public MyAdapter(Context context) {
    mdata = new ArrayList<>();
    this.context = context;
}

//更新
public void setdata(List<Bean.DataBean> datas) {
    //清空
    mdata.clear();
    mdata.addAll(datas);
    notifyDataSetChanged();
}

//追加
public void add(List<Bean.DataBean> datas) {

    mdata.addAll(datas);
    notifyDataSetChanged();
}

//數量
@Override
public int getCount() {

    return mdata.size();
}

@Override
public Bean.DataBean getItem(int position) {

    return mdata.get(position);
}

@Override
public int getViewTypeCount() {
    return 2;

}

@Override
public int getItemViewType(int position) {


    return position%2;
}

@Override
public long getItemId(int position) {
    return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder;
    if(getItemViewType(position)==0)
    {
        if(convertView==null)
        {
            convertView=LayoutInflater.from(context).inflate(R.layout.item,parent,false);
            holder=new ViewHolder();
            holder.title1 = convertView.findViewById(R.id.title1);
            holder.title2 = convertView.findViewById(R.id.title2);
            holder.image1 = convertView.findViewById(R.id.image1);
            convertView.setTag(holder);
        }else
        {
            holder = (ViewHolder) convertView.getTag();
        }
        holder.title1.setText(getItem(position).getNews_title());
        holder.title2.setText(getItem(position).getNews_summary());
        DisplayImageOptions options=new DisplayImageOptions.Builder()
                .bitmapConfig(Bitmap.Config.RGB_565)
                .cacheInMemory(true)
                .cacheOnDisk(true)
                .build();
        ImageLoader.getInstance().displayImage(getItem(position).getPic_url(),holder.image1,options);

    }
    else
    {
        if(convertView==null)
        {
            convertView=LayoutInflater.from(context).inflate(R.layout.item2,parent,false);
            holder=new ViewHolder();
            holder.title1 = convertView.findViewById(R.id.title1);
            holder.title2 = convertView.findViewById(R.id.title2);

            convertView.setTag(holder);
        }else
        {
            holder= (ViewHolder) convertView.getTag();
        }
        holder.title1.setText(getItem(position).getNews_title());
        holder.title2.setText(getItem(position).getNews_summary());
    }
   /* if (convertView == null) {
        convertView = LayoutInflater.from(context).inflate(R.layout.item, parent, false);
        holder = new ViewHolder();
        holder.title1 = convertView.findViewById(R.id.title1);
        holder.title2 = convertView.findViewById(R.id.title2);
        holder.image1 = convertView.findViewById(R.id.image1);
        convertView.setTag(holder);

    } else {
        holder = (ViewHolder) convertView.getTag();
    }
    holder.title1.setText(mdata.get(position).getNews_title());
    holder.title2.setText(mdata.get(position).getNews_summary());
    DisplayImageOptions options=new DisplayImageOptions.Builder()
            .bitmapConfig(Bitmap.Config.RGB_565)
            .cacheInMemory(true)
            .cacheOnDisk(true)
            .build();
    ImageLoader.getInstance().displayImage(getItem(position).getPic_url(),holder.image1,options);

*/
return convertView;
}
}
class ViewHolder{
TextView title1,title2;
ImageView image1;

}

#3.工具類
package com.bw.ymy.week2;

import android.os.AsyncTask;

import com.google.gson.Gson;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;

public class Netuil {
//1.單列
private static Netuil instance;
//2.方法

public Netuil() {
}
//3.獲取物件
public static  Netuil getInstance()
{
    if(instance==null)
    {
        instance=new Netuil();
    }
    return instance;
}
//4.get請求
public  interface  Callback<T>
{
    void  onsuccess(T t);
}
//5.網路
public  void getRequest(final String urlstr,final Class clazz,final Callback callback)
{
    new AsyncTask<String,Void,Object>()
    {
        @Override
        protected Object doInBackground(String... strings) {
            return getRequest(urlstr,clazz);
        }

        @Override
        protected void onPostExecute(Object o) {
            callback.onsuccess(o);
        }
    }.execute(urlstr);
}
//6.返回BEAN
public  <T> T getRequest(String  urlstr,Class clazz)
{
    return (T) new Gson().fromJson(getRequest(urlstr),clazz);
}
//7.網路請求
public  String  getRequest(String  urlstr)
{
    String  result="";
    try {
        URL url=new URL(urlstr);
        HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
        //get
        urlConnection.setRequestMethod("GET");
        urlConnection.setReadTimeout(5000);
        urlConnection.setConnectTimeout(5000);
        int responseCode = urlConnection.getResponseCode();
        if(responseCode==200)
        {
            result=stream2(urlConnection.getInputStream());
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return result;
}
//8.字元流
public String stream2(InputStream is) throws IOException
{
    InputStreamReader InputStreamReader=new InputStreamReader(is);
    BufferedReader BufferedReader=new BufferedReader(InputStreamReader);
    StringBuilder StringBuilder=new StringBuilder();
    for (String  tmp=BufferedReader.readLine();tmp!=null;tmp=BufferedReader.readLine())
    {
        StringBuilder.append(tmp);
    }
    return StringBuilder.toString();
}

}
#4.APP+imageloader
package com.bw.ymy.week2;

import android.app.Application;
import android.os.Environment;

import com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiskCache;
import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;

import java.io.File;

public class App extends Application {
@Override
public void onCreate() {

    //路徑
    String pate=Environment.getExternalStorageState()+"/image";
    File file=new File(pate);
    ImageLoaderConfiguration configuration=new ImageLoaderConfiguration.Builder(this)
            .memoryCacheSizePercentage(10)//內部承包
            .diskCache(new UnlimitedDiskCache(file))//路徑
            .diskCacheFileCount(50)//數量
            .diskCacheSize(50*1024*1024)
            .build();
    ImageLoader.getInstance().init(configuration);
    super.onCreate();
}

}