MainActivity

package com.bwie.loaderimagelistviewframe;

import android.os.AsyncTask;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
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.nostra13.universalimageloader.core.DisplayImageOptions;
import com.nostra13.universalimageloader.core.ImageLoader;

import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.List;

public class MainActivity extends AppCompatActivity {

    private ListView lv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        lv = (ListView) findViewById(R.id.lv);

        loadData("http://op.juhe.cn/yi18/news/list?key=3c0aa5802f5638a205efbe9940f01354");
    }

    private void loadData(String path) {

        new AsyncTask<String, Void, String>() {

            @Override
            protected String doInBackground(String... params) {
                try {
                    String path = params[0];
                    System.out.println("path:" + path);
                    URL url = new URL(path);
                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                    connection.setRequestMethod("GET");
                    connection.setConnectTimeout(5000);
                    connection.setReadTimeout(5000);


                    if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
                        System.out.println("InputStream之前");

                        InputStream is = connection.getInputStream();
                        System.out.println("InputStream之后");
                        String json = StreamTools.readFromNetWork(is);
                        System.out.println(json);
                        return json;
                    }

                } catch (Exception e) {
                    e.printStackTrace();
                }

                return null;
            }


            @Override
            protected void onPostExecute(String s) {
                super.onPostExecute(s);
                if (s != null) {

                    Gson gson = new Gson();
                    HealthInfo healthInfo = gson.fromJson(s, HealthInfo.class);
                    List<HealthInfo.ResultBean.ListBean> list = healthInfo.getResult().getList();

                    lv.setAdapter(new MyAdapter(list));
                }
            }
        }.execute(path);
    }

    class MyAdapter extends BaseAdapter {

        private List<HealthInfo.ResultBean.ListBean> list;
        DisplayImageOptions option;

        public MyAdapter(List<HealthInfo.ResultBean.ListBean> list) {
            this.list = list;
            option = new DisplayImageOptions.Builder()
                    .showImageOnLoading(R.mipmap.loading)
                    .showImageOnFail(R.mipmap.ic_error)
                    .showImageForEmptyUri(R.mipmap.ic_empty)
                    .cacheInMemory(true)
                    .cacheOnDisk(true)
                    .build();
        }

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

        /**
         * Get the data item associated with the specified position in the data set.
         *
         * @param position Position of the item whose data we want within the adapter's
         *                 data set.
         * @return The data at the specified position.
         */
        @Override
        public Object getItem(int position) {
            return list.get(position);
        }

        /**
         * Get the row id associated with the specified position in the list.
         *
         * @param position The position of the item within the adapter's data set whose row id we want.
         * @return The id of the item at the specified position.
         */
        @Override
        public long getItemId(int position) {
            return position;
        }

        /**
         * Get a View that displays the data at the specified position in the data set. You can either
         * create a View manually or inflate it from an XML layout file. When the View is inflated, the
         * parent View (GridView, ListView...) will apply default layout parameters unless you use
         * {@link LayoutInflater#inflate(int, ViewGroup, boolean)}
         * to specify a root view and to prevent attachment to the root.
         *
         * @param position    The position of the item within the adapter's data set of the item whose view
         *                    we want.
         * @param convertView The old view to reuse, if possible. Note: You should check that this view
         *                    is non-null and of an appropriate type before using. If it is not possible to convert
         *                    this view to display the correct data, this method can create a new view.
         *                    Heterogeneous lists can specify their number of view types, so that this View is
         *                    always of the right type (see {@link #getViewTypeCount()} and
         *                    {@link #getItemViewType(int)}).
         * @param parent      The parent that this view will eventually be attached to
         * @return A View corresponding to the data at the specified position.
         */
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {

            if (convertView == null) {
                convertView = View.inflate(getApplicationContext(), R.layout.item, null);

            }
            ImageView ivIcon = (ImageView) convertView.findViewById(R.id.iv);
            TextView tvContent = (TextView) convertView.findViewById(R.id.tv);

            tvContent.setText(list.get(position).getTitle());
            ImageLoader.getInstance().displayImage(list.get(position).getImg(), ivIcon, option);
            return convertView;
        }
    }
}