MyAdapter 适配器

package com.example.myzhoukao_one.Activity;import android.content.Context;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.os.AsyncTask;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;import com.example.myzhoukao_one.R;import java.io.InputStream;import java.net.HttpURLConnection;import java.net.URL;import java.util.List;/** * Created by Administrator on 2017/10/10. */public class MyAdapter extends BaseAdapter{    Context context;    List<DataDataBean.NewslistBean> list;    public MyAdapter(List<DataDataBean.NewslistBean> list, Context context) {        this.context = context;        this.list = list;    }    @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;    }    @Override    public View getView(int i, View view, ViewGroup viewGroup) {        ViewHolder holder;        if(view == null){           view = View.inflate(context, R.layout.item_layout,null);            holder = new ViewHolder();            holder.iv = view.findViewById(R.id.image_view);            holder.textView = view.findViewById(R.id.text_view);            view.setTag(holder);        }else{            holder = (ViewHolder) view.getTag();        }        displayImage(list.get(i).getPicUrl(),holder.iv);        holder.textView.setText(list.get(i).getTitle());        return view;    }    private void displayImage(final String picUrl, final ImageView iv) {        //异步处理        AsyncTask< Void,Void,Bitmap> asyncTask = new AsyncTask< Void, Void, Bitmap>() {            @Override            protected Bitmap doInBackground(Void... voids) {                //得到图片的网络格式                try {                    URL url = new URL(picUrl);                    HttpURLConnection connection = (HttpURLConnection) url.openConnection();                    //设置                    connection.setRequestMethod("GET");                    connection.setReadTimeout(5000);                    connection.setConnectTimeout(5000);                    //获取                    int responseCode = connection.getResponseCode();                    if(responseCode == 200){                        InputStream inputStream = connection.getInputStream();                        //转成Bitmap                        Bitmap map = BitmapFactory.decodeStream(inputStream);                        return map;                    }                } catch (Exception e) {                    e.printStackTrace();                }                return null;            }            @Override            protected void onPostExecute(Bitmap bitmap) {                iv.setImageBitmap(bitmap);            }        };        asyncTask.execute();    }    private class ViewHolder{        ImageView iv;        TextView textView;    }}