ImagerLoader缓存到SdCard

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package baway.com.yuejunfei1503a20170424;import android.app.Application;import android.os.Environment;import android.util.Log;import com.nostra13.universalimageloader.cache.disc.impl.UnlimitedDiskCache;import com.nostra13.universalimageloader.cache.disc.naming.Md5FileNameGenerator;import com.nostra13.universalimageloader.cache.memory.impl.LruMemoryCache;import com.nostra13.universalimageloader.core.ImageLoader;import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;import com.nostra13.universalimageloader.utils.StorageUtils;import java.io.File;/** * 类的作用： * 作者：岳俊飞 * 时间：2017/4/24

    权限中添加name---类名     和导入image_loader jar包

    添加写入 读取权限 */public class MyImageLoader extends Application {    @Override    public void onCreate() {        super.onCreate();        try {            File cacheDir = StorageUtils.getOwnCacheDirectory(this, Environment.getExternalStorageDirectory().getPath());            ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(this)                    .threadPoolSize(3)//配置线程数量                    .memoryCache(new LruMemoryCache(2 * 1024 * 1024))//内存缓存图片 2M                    .diskCache(new UnlimitedDiskCache(cacheDir))//配饰sdcard缓存路径                    .diskCacheSize(50 * 1024 * 1024)//sdcard上缓存50M的图片                    .diskCacheFileCount(100)//缓存文件的数量   100个                    .diskCacheFileNameGenerator(new Md5FileNameGenerator())                    .build();            //配置缓存选项            ImageLoader.getInstance().init(configuration);        } catch (Exception e) {            e.printStackTrace();        }    }}

package baway.com.yuejunfei1503a20170424;import android.content.Context;import android.net.ConnectivityManager;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.TextView;import com.nostra13.universalimageloader.core.DisplayImageOptions;import com.nostra13.universalimageloader.core.ImageLoader;import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;import com.nostra13.universalimageloader.core.assist.ImageScaleType;import java.util.List;/** * 类的作用： * 作者：岳俊飞 * 时间：2017/4/24 */public class Mydapter extends BaseAdapter {    private Context context;    private List<Bean.SubjectsBean> list;    //配置图片的缓存选项    private  DisplayImageOptions options;    public Mydapter(Context context, List<Bean.SubjectsBean> list){        this.context=context;        this.list=list;        //配置是否对图片进行缓存        options = new DisplayImageOptions.Builder()                .cacheInMemory(true)//是否内存缓存                .cacheOnDisk(true)//是否sdcard缓存                .build();//构建图片缓存的选项    }    public  void addMore(List<Bean.SubjectsBean> list2,boolean isplay){        for (Bean.SubjectsBean be:list2){            if (isplay){                list.add(0,be);            }else {                list.add(be);            }        }    }    @Override    public int getCount() {        return list.size();    }    @Override    public Object getItem(int position) {        return list.get(position);    }    @Override    public long getItemId(int position) {        return position;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        ViewHolder viewHolder = null;        if (convertView == null) {            viewHolder = new ViewHolder();            convertView = convertView.inflate(context, R.layout.item, null);            viewHolder.tvDesc = (TextView) convertView.findViewById(R.id.tvDes);            viewHolder.tvDesc2= (TextView) convertView.findViewById(R.id.tvDes2);            viewHolder.image= (ImageView) convertView.findViewById(R.id.imagev);            viewHolder.image2= (ImageView) convertView.findViewById(R.id.imagev2);            viewHolder.image3= (ImageView) convertView.findViewById(R.id.imagev3);            convertView.setTag(viewHolder);        } else {            viewHolder = (ViewHolder) convertView.getTag();        }        viewHolder.tvDesc.setText(list.get(position).getOriginal_title());        viewHolder.tvDesc2.setText(list.get(position).getTitle());        ImageLoader.getInstance().displayImage(list.get(position).getCasts().get(0).getAvatars().getMedium(), viewHolder.image,options);        ImageLoader.getInstance().displayImage(list.get(position).getCasts().get(1).getAvatars().getSmall(), viewHolder.image2,options);        ImageLoader.getInstance().displayImage(list.get(position).getCasts().get(2).getAvatars().getLarge(), viewHolder.image3,options);        return convertView;    }    //定义V    static class ViewHolder {        TextView tvDesc;        TextView tvDesc2;        ImageView image;        ImageView image2;        ImageView image3;    }}

package baway.com.yuejunfei1503a20170424;import android.os.AsyncTask;import android.os.Environment;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.widget.ImageView;import com.google.gson.Gson;import com.limxing.xlistview.view.XListView;import com.nostra13.universalimageloader.core.ImageLoader;import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;import java.io.File;import java.io.FileOutputStream;import java.io.InputStream;import java.io.OutputStream;import java.net.HttpURLConnection;import java.net.MalformedURLException;import java.net.URL;public class MainActivity extends AppCompatActivity implements XListView.IXListViewListener {    private XListView xlv;    private Mydapter dapter;    private int pageIndex = 1;    private boolean isplay=true;    private ImageView imageView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        xlv = (XListView) findViewById(R.id.xlv);        imageView = (ImageView) findViewById(R.id.imagev);        xlv.setPullLoadEnable(true);        xlv.setRefreshTime("12:23:14");        xlv.setXListViewListener(this);        getHuoqu("https://api.douban.com/v2/movie/in_theaters?apikey=0b2bdeda43b5688921839c8ecb20399b&city=北京&start="+pageIndex+"&count=2");    }    private void getHuoqu(String s) {        new AsyncTask<String, Void, String>() {            @Override            protected void onPostExecute(String s) {                super.onPostExecute(s);                Gson gson = new Gson();                Bean bean = gson.fromJson(s, Bean.class);                if (bean==null){                    return;                }                if (dapter==null){                    dapter=new Mydapter(MainActivity.this,bean.getSubjects());                }else {                    dapter.addMore(bean.getSubjects(),isplay);                    dapter.notifyDataSetChanged();                }                 xlv.setAdapter(dapter);            }            @Override            protected String doInBackground(String... params) {                try {                    String str=params[0];                    URL url = new URL(str);                    HttpURLConnection connection= (HttpURLConnection) url.openConnection();                    connection.setRequestMethod("GET");                    connection.setReadTimeout(5000);                    connection.setConnectTimeout(5000);                    int code = connection.getResponseCode();                    if (code==200){                        InputStream inputStream = connection.getInputStream();                        String upec = Utils.upec(inputStream);                        System.out.println("haha"+upec);                        //将网络数据缓存到sdcard /  SQLite  SharedPerfrenced                        File file = new File(Environment.getExternalStorageDirectory(),"menuinfo.txt");                        if (!file.exists()){                            file.createNewFile();                        }                        OutputStream os = new FileOutputStream(file);                        os.write(str.getBytes());                        //关闭流                        inputStream.close();                        os.close();                        return upec;                    }                } catch (Exception e) {                    e.printStackTrace();                }                return null;            }        }.execute(s);    }    @Override    public void onRefresh() {        isplay=true;        pageIndex++;        getHuoqu("https://api.douban.com/v2/movie/in_theaters?apikey=0b2bdeda43b5688921839c8ecb20399b&city=北京&start="+pageIndex+"&count=2");        xlv.stopRefresh(true);    }    @Override    public void onLoadMore() {        isplay=false;        pageIndex++;        getHuoqu("https://api.douban.com/v2/movie/in_theaters?apikey=0b2bdeda43b5688921839c8ecb20399b&city=北京&start="+pageIndex+"&count=2");        xlv.stopLoadMore();    }}

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