ChildFragment

package com.bawei.wss.jinritotiao;

import android.content.Context;
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.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 com.youth.banner.Banner;

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

/**
 * author:Created by WangZhiQiang on 2017/10/24.
 */

public class ChildFragment extends Fragment {
    int page=1;//请求接口的第几页;
    String baseUrl = "http://www.yulin520.com/a2a/impressApi/news/mergeList?pageSize=10&page=1";
    private PullToRefreshListView plv;

    private ImageLoader imageLoaderInstances;
    //定义一个总的集合, 以后上拉加载的时候,往这个集合里追加数据,更新适配器;
    List<Product.DataBean> list = new ArrayList<Product.DataBean>();
    private MAdapter mAdapter;

    String[] imagUrls = {"https://img-my.youkuaiyun.com/uploads/201407/26/1406383299_1976.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383299_1976.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383299_1976.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383299_1976.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383299_1976.jpg"};
    private com.nostra13.universalimageloader.core.ImageLoader imageLoader;
    private ListView lv;
    private Banner banner;


    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_b, null);
        View header_banner = inflater.inflate(R.layout.header_banner, null);
        banner = (Banner) header_banner.findViewById(R.id.banner);
        plv = (PullToRefreshListView)view.findViewById(R.id.plv);
        lv = plv.getRefreshableView();
        lv.addHeaderView(header_banner);
        return view;
    }


    @Override
    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        getNetData(page);
       getBanner();
        mAdapter = new MAdapter();//主线程继续往下走,和刚才开启的线程互不影响;0.0001
        plv.setAdapter(mAdapter);
        plv.setMode(PullToRefreshBase.Mode.BOTH);//上下拉都支持


        plv.setOnRefreshListener(new PullToRefreshBase.OnRefreshListener2<ListView>() {
            @Override
            public void onPullDownToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {
                list.clear();
                new MAsync().execute(baseUrl+1);
            }


            @Override
            public void onPullUpToRefresh(PullToRefreshBase<ListView> pullToRefreshBase) {
                page++;
                getNetData(page);
            }
        });




    }


    private void getNetData(int page) {
        new MAsync().execute(baseUrl+page);
    }


    private class MAdapter 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;
        }


        /**
         * 多条目
         * @param i
         * @param view
         * @param viewGroup
         * @return
         */
        @Override
        public View getView(int i, View view, ViewGroup viewGroup) {

            view = View.inflate(getActivity(), R.layout.item01, null);
            TextView textview = (TextView)view.findViewById(R.id.desc);
            ImageView iv = (ImageView)view.findViewById(R.id.iv);
            textview.setText(list.get(i).getTitle());
            imageLoaderInstances = ImageLoader.getInstance();
            imageLoaderInstances.displayImage(list.get(i).getUserImg(),iv);
            return view;
        }
    }




    class MAsync extends AsyncTask<String,Void,String> {


        @Override
        protected String doInBackground(String... strings) {


            return  NetWordUtils.getNetjson(strings[0]);
        }


        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
            Gson gson = new Gson();
            Product product = gson.fromJson(s, Product.class);
            List<Product.DataBean> data1 = product.getData();
            list.addAll(data1);
            mAdapter.notifyDataSetChanged();
            plv.onRefreshComplete();
        }
    }

//banner,上边记得初始化组件
    private void getBanner(){
        banner.setImages(Arrays.asList(imagUrls));
        banner.setImageLoader(new BannerImageLoader());
        banner.start();
    }


    class BannerImageLoader extends com.youth.banner.loader.ImageLoader {

        @Override
        public void displayImage(Context context, Object path, ImageView imageView) {
            com.nostra13.universalimageloader.core.ImageLoader imageLoader1 = com.nostra13.universalimageloader.core.ImageLoader.getInstance();
            imageLoader1.displayImage((String) path,imageView);
        }
    }

}