Xlistview

package com.example.yue3;

import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
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.example.xlistview_library.XListView;
import com.google.gson.Gson;
import com.nostra13.universalimageloader.core.ImageLoader;
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.util.ArrayList;
import java.util.List;
import java.util.logging.Handler;

/**
 * Created by  on 2017/9/20.
 */

public class f1 extends Fragment implements XListView.IXListViewListener{
    String path="http://gank.io/api/data/Android/10/1";
    private XListView xlv;
    List<User.ResultsBean> arr=new ArrayList<User.ResultsBean>();
    private Madapter madapter;
    private Handler hd;

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View inflate = inflater.inflate(R.layout.f11, container, false);
        xlv =(XListView)inflate.findViewById(R.id.xlv);
        return inflate;
    }

    public static Fragment geto(String ss){
        f1 ff = new f1();
        Bundle bundle = new Bundle();
        bundle.putString("name",ss);
        ff.setArguments(bundle);
        return ff;
    }

    @Override
    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        Bundle arguments = getArguments();
        String string = arguments.getString("name");

        xlv.setPullLoadEnable(true);//必加
        madapter = new Madapter();//适配器
        xlv.setAdapter(madapter);
        xlv.setXListViewListener(this);
        new MasayTask().execute(path);
    }

    //异步
    class MasayTask extends AsyncTask<String,Void,String>{
        @Override
        protected String doInBackground(String... params) {
            try {
                URL url = new URL(path);
                HttpURLConnection urlConnection = (HttpURLConnection)url.openConnection();
                int responseCode = urlConnection.getResponseCode();
                if (responseCode==200){
                    InputStream inputStream = urlConnection.getInputStream();
                    BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
                    StringBuilder builder = new StringBuilder();
                    String string="";
                    while ((string=bufferedReader.readLine())!=null){
                        builder.append(string);
                    }
                    return builder.toString();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            Gson gson = new Gson();
            User user = gson.fromJson(s, User.class);
            List<User.ResultsBean> results = user.getResults();
            arr.addAll(results);
            madapter.notifyDataSetChanged();
        }

        @Override
        protected void onProgressUpdate(Void... values) {
            super.onProgressUpdate(values);
        }
    }

    public void onLoad(){
        xlv.stopRefresh();
        xlv.stopLoadMore();
        xlv.setRefreshTime("刚刚");
    }

    //适配器
    class Madapter extends BaseAdapter{
        @Override
        public int getItemViewType(int position) {
            if (arr.get(position).getImages()==null){
                return 0;
            }
            return 1;
        }

        @Override
        public int getViewTypeCount() {
            return 2;
        }

        @Override
        public int getCount() {
            return arr.size();
        }

        @Override
        public Object getItem(int position) {
            return arr.get(position);
        }

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            int itemViewType = getItemViewType(position);
            User.ResultsBean resultsBean = arr.get(position);
            switch (itemViewType){
                case 0:
                    ViewHolder1 vh1;
                    if (convertView==null){
                        convertView = View.inflate(getActivity(), R.layout.duo2, null);
                        vh1=new ViewHolder1();
                        vh1.tv1=(TextView) convertView.findViewById(R.id.tv1);
                        convertView.setTag(vh1);
                    }else{
                        vh1=(ViewHolder1) convertView.getTag();
                    }
                    vh1.tv1.setText(resultsBean.getDesc());
                    break;
                case 1:
                    ViewHolder vh;
                    if (convertView==null){
                        convertView = View.inflate(getActivity(), R.layout.duo, null);
                        vh = new ViewHolder();
                        vh.tv=(TextView) convertView.findViewById(R.id.tv);
                        vh.img=(ImageView) convertView.findViewById(R.id.img);
                        convertView.setTag(vh);
                    }else{
                        vh=(ViewHolder) convertView.getTag();
                    }
                    vh.tv.setText(resultsBean.getDesc());
                    ImageLoader.getInstance().displayImage(resultsBean.getImages().get(0),vh.img);
                    break;
            }
            return convertView;
        }
        class ViewHolder{
            ImageView img;
            TextView tv;
        }
        class ViewHolder1{
            TextView tv1;
        }
        }



    @Override
    public void onRefresh() {
       arr.clear();
        new MasayTask().execute("http://gank.io/api/data/Android/10/1");
       onLoad();
    }

    @Override
    public void onLoadMore() {
        new MasayTask().execute("http://gank.io/api/data/Android/10/1");
        onLoad();
    }
}