DataUtil.java

package com.example.love_reading.util;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.util.Log;

import org.json.JSONArray;
import org.json.JSONObject;

import com.example.love_reading.BookInfo;
import com.example.love_reading.sql.SQLiteHelper;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;

public class DataUtil {
   private String tag = DataUtil.this.getClass().getSimpleName();
   public static String Download(String urlstr)
   {
       String result="";
       try{
           URL url=new URL(urlstr);
           URLConnection connection =url.openConnection();
           String line;
           BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream(),"UTF-8"));
           while ((line = in.readLine()) != null) {
               result += line;
           }
       }catch (Exception e) {
           e.printStackTrace();
       }
       return  result;
   }

    public BookInfo parseBookInfo(String str)
    {
        BookInfo info=new BookInfo();
        try{
            JSONObject mess=new JSONObject(str);
            Log.i(tag, "allmeg: "+mess);
            info.setTitle(mess.getString("title"));
            info.setBitmap(DownloadBitmap(mess.getString("image")));
            info.setAuthor(parseJSONArraytoString(mess.getJSONArray("author")));
            info.setPublisher(mess.getString("publisher"));
            info.setPublishDate(mess.getString("pubdate"));
            info.setISBN(mess.getString("isbn13"));
            info.setSummary(mess.getString("summary"));
            info.setPrice(mess.getString("price"));           
            info.setPages(mess.getString("pages"));  
            
        }catch (Exception e) {
            e.printStackTrace();
        }
        return info;
    }

     public Bitmap DownloadBitmap(String bmurl)
     {
         Bitmap bm=null;
         InputStream is =null;
         BufferedInputStream bis=null;
         try{
             URL  url=new URL(bmurl);
             URLConnection connection=url.openConnection();
             bis=new BufferedInputStream(connection.getInputStream());
             bm= BitmapFactory.decodeStream(bis);
         }catch (Exception e){
             e.printStackTrace();
         }
         finally {
             try {
                 if(bis!=null)
                     bis.close();
                 if (is!=null)
                     is.close();
             }catch (Exception e){
                 e.printStackTrace();
             }
         }
         return bm;
     }
    public String parseJSONArraytoString (JSONArray arr)
    {
        StringBuffer str =new StringBuffer();
        for(int i=0;i<arr.length();i++)
        {
            try{
                str=str.append(arr.getString(i)).append(" ");
            }catch (Exception e){
                e.printStackTrace();
            }
        }
        return str.toString();
    }
}