网络获取图片列表

首先设置布局：listView列表

然后设置item子布局：

然后写bean类：需依靠gson

-----------设置adapter-------------

package com.example.administrator.myloadimg;

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

import com.bumptech.glide.Glide;

import java.util.List;

/**
 * Created by Administrator on 2017/2/10.
 */

public class MyListAdapter extends BaseAdapter {

    private final Context context;
    private final List<ImgBean.ShowapiResBodyBean.PagebeanBean.ContentlistBean> list;

    public MyListAdapter(Context context, List<ImgBean.ShowapiResBodyBean.PagebeanBean.ContentlistBean> list) {
        this.context = context;
        this.list = list;
    }


    @Override
    public int getCount() {
        return list==null?0:list.size();
    }

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

    @Override
    public long getItemId(int position) {
        return position;
    }
    /**
     * 为了复用Item使用convertView
     * 为了再次找id，使用ViewHolder(避免再次找ID)
     *
     * @param position
     * @param convertView
     * @param viewGroup
     * @return
     */
    @Override
    public View getView(int position, View convertView, final ViewGroup viewGroup) {
        final ViewHolder viewHolder;
        if(convertView==null){
            convertView= LayoutInflater.from(context).inflate(R.layout.item_home_list,null);

            viewHolder=new ViewHolder(convertView);
            convertView.setTag(viewHolder);
        }else {
            viewHolder= (ViewHolder) convertView.getTag();
        }

        //设置数据 placeholder():图片正在加载时显示的图片  into():指定图片要显示的控件 load():图片的URL
        Glide.with(context).load(list.get(position).img).placeholder(R.mipmap.ic_launcher).into(viewHolder.img);
        return viewHolder.itemView;
    }
    public class ViewHolder{
        public View itemView;
        public ImageView img;
        public ViewHolder(View view){
            this.itemView = view;
            img = (ImageView) itemView.findViewById(R.id.img_home_list);
        }
    }

    /**
     * 返回item的对应的类型
     * @param position
     * @return
     */
    @Override
    public int getItemViewType(int position) {
        return super.getItemViewType(position);
    }

    /**
     * 返回Iitem有几种类型
     * @return
     */
    @Override
    public int getViewTypeCount() {
        return super.getViewTypeCount();
    }

}
---------------activity------------

package com.example.administrator.myloadimg;

import android.os.Bundle;
import android.support.annotation.IdRes;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.Toast;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;
import com.google.gson.Gson;

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

public class MainActivity extends AppCompatActivity {
    private ListView mList;
    private ProgressBar mProgress;
    private List<ImgBean.ShowapiResBodyBean.PagebeanBean.ContentlistBean> list;
    private static final String URL_IMG = "http://route.showapi.com/959-1?showapi_appid=26470&type=meishi&showapi_sign=b24c660849fd42be80b7ae51e55d530d";
    private RequestQueue requestQueue;
    private MyListAdapter adapter;
    private StringRequest request;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        requestQueue= Volley.newRequestQueue(this);
        mList = getViewById(R.id.list_main);
        mProgress = getViewById(R.id.pb_mian);
        //创建ListView的适配器
        list = new ArrayList<>();
        adapter = new MyListAdapter(this,list);
        //设置ListView的适配器
        mList.setAdapter(adapter);
        //从网络获取数据
        getDataFromNet();
    }

    private void getDataFromNet() {
        //创建请求
        //解析从从服务器获取的JSON数据
//将数据添加到数据源中，通知适配器数据源改变，刷新数据
//将进度条隐藏
        request = new StringRequest(Request.Method.GET,URL_IMG,new Response.Listener<String>(){

            @Override
            public void onResponse(String json) {
                //解析从从服务器获取的JSON数据
                Gson gson=new Gson();
                ImgBean imgBean = gson.fromJson(json, ImgBean.class);
                //将数据添加到数据源中，通知适配器数据源改变，刷新数据
                list.addAll(imgBean.showapi_res_body.pagebean.contentlist);
                adapter.notifyDataSetChanged();
                //将进度条隐藏
                mProgress.setVisibility(View.GONE);
            }
        },new Response.ErrorListener(){

            @Override
            public void onErrorResponse(VolleyError volleyError) {
                Toast.makeText(MainActivity.this, "访问失败", Toast.LENGTH_SHORT).show();
            }
        });
        // //2.将请求加入到请求对列（请求加入到请求对列中才会访问网络）
        request.setTag("img");
        requestQueue.add(request);
    }

    /**
     * 根据ID找对应的控件
     * @param viewid
     * @param <T>
     * @return
     */
    private <T extends View> T getViewById( @IdRes int viewid){
        return (T)this.findViewById(viewid);
    }

    //
    protected void onStop(){
        super.onStop();
        requestQueue.cancelAll("img");
    }
}

需用到依靠：

-------------------------结束--------------------