Android : Download images and mp3 audio from server -

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i want download mp3 audio , images server.file downloaded not goes sd card folder.below code correct or not or wrong in downloading on store sd card folder.how work download media files , save sd card folder.thanks in advanced.

here mp3 download code.

public void downloadaudiofile(final string mp3url , final string strimagename) {         new asynctask<string, string, string>()         {             @override             protected string doinbackground(string... f_url) {                 int count;                 try                 {                     f_url[0] = mp3url;                     url url = new url(f_url[0]);                     urlconnection conection = url.openconnection();                     conection.connect();                     // music file length                     int lenghtoffile = conection.getcontentlength();                     log.e("lenghtoffile "," = " + lenghtoffile);                     // input stream read file - 8k buffer                     if(lenghtoffile > 0)                     {                         inputstream input = new bufferedinputstream(url.openstream(),10*1024);                         // output stream write file in sd card                         newfolder = new file(environment.getexternalstoragedirectory().getpath() + file.separator + "classnkk_audio");                         file file = new file(newfolder, strimagename);                         outputstream output = new fileoutputstream(file);                         byte data[] = new byte[1024];                         long total = 0;                         while ((count = input.read(data)) != -1)                         {                             total += count;                             publishprogress("" + (int) ((total * 100) / lenghtoffile));                             output.write(data, 0, count);                         }                          output.flush();                         output.close();                         input.close();                         log.e("audio files", "download ans save in sd card !!!");                         log.e("======================"," downloadmusicfrominternet ======================");                     }                  } catch (exception e) {                     log.e("error: ", e.getmessage());                 }                 return null;             }         }.execute();     }

and here image download code

void download_pngfile(string fileurl, string imagename) {          try {             url imgurl = new url(fileurl);             httpurlconnection conn = (httpurlconnection) imgurl.openconnection();             conn.connect();             int lenghtofimage_file = conn.getcontentlength();             log.e("lenghtofimage_file "," = "+lenghtofimage_file);              if(lenghtofimage_file > 0)             {                 bitmapfactory.options options = new bitmapfactory.options();                 options.insamplesize = 1;                 bitmap imagenobtenida = bitmapfactory.decodestream(conn.getinputstream(), null, options);                 file file = new file(newfolder, imagename);                  if (file.exists()) file.delete();                 try                 {                     fileoutputstream out = new fileoutputstream(file);                     imagenobtenida.compress(bitmap.compressformat.png, 100, out);                     out.flush();                     out.close();                     int imagenobtenidaw = imagenobtenida.getwidth();                     int imagenobtenidah = imagenobtenida.getheight();                     log.e("imagenobtenidaw " ," = +" + imagenobtenidaw + " imagenobtenidah = " + imagenobtenidah);                  } catch (exception e) {                  }             }          } catch (ioexception e) {             e.printstacktrace();         }     }    if (imagename.endswith(mp3_pattern))                     {                         str_downloadurl = namespace + "/downloadfile/filename/"+imagename;                         downloadaudiofile(str_downloadurl ,imagename);                         strdownloadstatus = "1";                         dbhelper.update_downloadstatus(imagename, strdownloadstatus);                     }                     if (imagename.endswith(png_pattern) || imagename.endswith(jpg_pattern) || imagename.endswith(bmp_pattern) || imagename.endswith(gif_pattern) || imagename.endswith(jpeg_pattern))                     {                         str_downloadurl = namespace + "/downloadfile/filename/" + imagename;                         download_pngfile(str_downloadurl,imagename);                         strdownloadstatus = "1";                         dbhelper.update_downloadstatus(imagename, strdownloadstatus);                     }


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