java - Monitoring BufferedInputStream download progress -


i'm trying download file using asynctask on android. want display progressdialog should have progress bar show status of download. i'm using onprogressupdate() function , implemented call publishprogress() in doinbackground() function. however, progress dialog pops after downloading file. code:

protected long doinbackground(url...urls) {     (int = 0; < urls.length; i++) {         url = urls[i];         try {             urlconnection conn = url.openconnection();             conn.connect();             totalsize = conn.getcontentlength();              bufferedinputstream bis = new bufferedinputstream(url.openstream());             fileoutputstream fos = new fileoutputstream(environment.getexternalstoragedirectory().getpath() + "/forvo_temp.mp3");             bufferedoutputstream bos = new bufferedoutputstream(fos,1024);             byte [] data = new byte[1024];              int x=0; int c=0;             while((x=bis.read(data,0,1024))>=0){                 bos.write(data,0,x);                 c += 1024;                 publishprogress(c);             }         } catch (exception e) {             e.printstacktrace();         }     }      return 0l; // don't know }  protected void onprogressupdate(integer...args) {     pd = progressdialog.show(context, "downloading...", "downloading...", true, false);     pd.setprogress(args[0] / totalsize); }

i guess whole file downloaded when call new bufferedinputstream(url.openstream()). how can monitor download progress?

this code useful showing download items totol size , downloaded size.

private static final int download_onprogress = 1;  @override protected dialog oncreatedialog(int id) {     switch (id) {     case download_onprogress:         progressdialog = new progressdialog(this);          progressdialog.setmessage("downloading latest ...");         progressdialog.setcancelable(true);         progressdialog.setprogressstyle(progressdialog.style_horizontal);         try {             progressdialog.show();         } catch (exception e) {             // todo auto-generated catch block             e.printstacktrace();         }         return progressdialog;     default:         return null;     } }

you can use asynctask downloading version in background.

private class download extends asynctask<string, string, string> {      @override     protected void onpreexecute() {         // todo auto-generated method stub         super.onpreexecute();         logger.info("loaddataasync onpreexecute");         showdialog(download_onprogress);     }      @override     protected string doinbackground(string... aurl) {         int count = 0;          try {             url url = new url(aurl[0]);             urlconnection urlconnection = url.openconnection();             urlconnection.connect();              int contentlength = urlconnection.getcontentlength();             progressdialog.setmax(contentlength);             string path = "";             file file = null;             if (android.os.environment.getexternalstoragestate().equals(                     android.os.environment.media_mounted)) {                 path = environment.getexternalstoragedirectory()                         + "/download/";                 file = new file(path);                  file.mkdirs();                  file outputfile = new file(file, "telfaz.apk");                 outputstream fos = new fileoutputstream(outputfile);                  inputstream = new bufferedinputstream(url.openstream());                  byte[] buffer = new byte[1024];                 long len1 = 0;                 while ((count = is.read(buffer)) != -1                         && !download.iscancelled()) {                     len1 += count;                     publishprogress("" + len1);                     fos.write(buffer, 0, count);                 }                 fos.flush();                 fos.close();                 is.close();              }             logger.info("success -> file downloaded succesfully. returning 'success' code");             return util.apk_download_success;          } catch (ioexception e) {             logger.error("exception in update process : "                     + util.getstacktrace(e));         }         logger.info("failed -> file download failed. returning 'error' code");         return util.apk_download_failed;     }      @override     protected void onpostexecute(string result) {         logger.info("on download onpostexecute. result : " + result);         progressdialog.dismiss();         removedialog(download_onprogress);         if (result.equalsignorecase(util.apk_download_success)) {             update();          } else {             toast.maketext(downloadallcontentsactivity.this,                     getstring(r.string.updateapplicationfailed),                     toast.length_long).show();              loaddataasync.execute();          }      }      @override     protected void onprogressupdate(string... values) {         if (values != null && values.length > 0) {             progressdialog.setprogress(integer.parseint(values[0]));         }      }   }

Comments

Post a Comment

Popular posts from this blog

php - cannot display multiple markers in google maps v3 from traceroute result -

i'm newbie in php mysql , google maps v3. have problems in google maps v3. made traceroute web based , map traceroute's result in google maps v3 final project of college education. have try many tutorials didn't work. have tried tutorials in forum nothing worked. problem cannot display multiple markers got location data database. maybe because i'm newbie , not know how do. confuse looping show markers. here code <?php error_reporting(e_all ^ (e_notice)); ini_set('max_execution_time', 360); $enable_log_user = false; global $ip, $host_name, $host_ip; $host = @$_post['host']; $trace = @$_post['trace']; $self = $_server['php_self']; include("phpsqlajax_dbinfo.php"); $connection = mysql_connect ('127.0.0.1', $username, $password); if (!$connection) { die('not connected : ' . mysql_error());} $db_selected = mysql_select_db($database, $connection); if (!$db_selected) { die ('can\'t use db : ...
Read more

c# - DetailsView in ASP.Net - How to add another column on the side/add a control in each row? -

i have detailsview control on page used edit various fields of record, works in respect. i looking way add 1 column (and if works, why not more) right, absolutely read-only, show same fields of record comparison purposes. i aware there no obvious way such thing out of box detailsview . have looked other controls (transposed gridview , recommended formview , listview ), nothing satisfies. have special data binding setup using detailsview , can't out of without losing features. anyone on how "hack in" additional columns (for display only) on detailsview ? the solution have now, use second detailsview , visible set false in aspx. in code, make sure databind hidden detailsview hosts data third column first, initial detailsview named itemdetails . and in item created event, pass third column html rendering of hidden controls (in last code block) : protected void itemdetails_itemcreated(object sender, eventargs e) { if (dataite...
Read more

javascript - firefox memory leak -

i have following script (i use raphaeljs also) draws circle, waits 1 second, draws circle again, etc (you can copy paste - functional, need include raphael raphaeljs.com): <div id="holder"> </div> <script src="raphael.js" type="text/javascript"></script> <script> var paper = raphael(10, 50, 320, 200); var rad = math.pi / 180; var finangle = 0; function sector(cx, cy, r, startangle, endangle, params) { var x1 = cx + r * math.cos(-startangle * rad), x2 = cx + r * math.cos(-endangle * rad), y1 = cy + r * math.sin(-startangle * rad), y2 = cy + r * math.sin(-endangle * rad); return ["m", cx, cy, "l", x1, y1, "a", r, r, 0, +(endangle - startangle > 180), 0, x2, y2]; } var path = sector(100,100,50,0,180); var arc = paper.path(path); function draw() { path = sector(100,100,50,0,finangle); ...
Read more