ImageLoader加载图片

先添加依赖：

compile'com.nostra13.universalimageloader:universal-image-loader:1.9.5'

主类：

package com.liulailin.day06_imageloader;


import android.app.Application;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;


import com.nostra13.universalimageloader.core.ImageLoader;


import static android.view.View.inflate;


public class MainActivity extends AppCompatActivity {




    String[] images ={
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383264_8243.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383248_3693.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383243_5120.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383242_3127.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383242_9576.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383242_1721.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383219_5806.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383214_7794.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383213_4418.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383213_3557.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383210_8779.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383172_4577.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383166_3407.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383166_2224.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383166_7301.jpg",
            "https://img-my.youkuaiyun.com/uploads/201407/26/1406383165_7197.jpg"
    };


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Log.e("MyApplication","我走了MainActivity");


       GridView gv = (GridView) findViewById(R.id.gv);
        gv.setAdapter(new MyAdapter());
    }


    class MyAdapter extends BaseAdapter{


        @Override
        public int getCount() {
            return images.length;
        }


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


        @Override
        public long getItemId(int position) {
            return 0;
        }


        @Override
        public View getView(int position, View convertView, ViewGroup parent) {


            if (convertView==null) {
                convertView=  View.inflate(MainActivity.this, R.layout.gv_item, null);
            }
           // ImageView iv = new ImageView(MainActivity.this);


            ImageView gv_iv = (ImageView) convertView.findViewById(R.id.gv_iv);
            //给imageView设置图片


            ImageLoader.getInstance().displayImage(images[position],gv_iv);


            return convertView;
        }
    }
}

图片加载：

package com.liulailin.day06_imageloader;


import android.app.Application;
import android.util.Log;


import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;


/**
 * Created by Administrator on 2017/8/8.
 */


public class MyApplication  extends Application{


    @Override
    public void onCreate() {
            super.onCreate();
        Log.e("MyApplication","我走了application");
        ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this).build();
        ImageLoader.getInstance().init(configuration);


        }
}

//图片切割

 @Override
    public void onBindViewHolder(MyviewHolder holder, int position) {
      String [] img=list.get(position).getImages().split("\\|");
        ImageLoader.getInstance().displayImage(img[0],holder.iv);
        holder.title.setText(list.get(position).getTitle());
        holder.price.setText(list.get(position).getPrice()+"");
        holder.title1.setText(list.get(position).getSubhead());
        holder.price1.setText(list.get(position).getBargainPrice()+"");


    }