java - Progress Bar loading according to timer -

am using timer record video in app , based on javacvrecorder app. when press screen recording starts , able see time in leftside of screen. instead of showing timer have show progress bar load according time can 1 me on don't know show progress bar. below code showing time while recording video. please me friends

private void initiaterecording(boolean isactiondown) {     isrecordingstarted = true;     firsttime = system.currenttimemillis();      recording = true;     totalpausetime = 0;     pausedtime = 0;      txttimer.setvisibility(view.visible);     // handler show recoding duration after recording starts      mhandler.removecallbacks(mupdatetimetask);     mhandler.postdelayed(mupdatetimetask, 100);     btnrecordercontrol.setvisibility(view.visible);     btnrecordercontrol.settext(getresources().getstring(r.string.stop)); } 

use asynkctask method  private void call_timerprogressbar() { //......call method first          try {             callprogressbar sessionrunner = new callprogressbar(getactivitytaskhandler);             sessionrunner.execute();         } catch (exception ex) {          }     }  public class callprogressbar extends asynctask<string, string, string> {          handler statushandler;          public callprogressbar(handler getactivitytaskhandler) {             statushandler = getactivitytaskhandler;         }          @override         protected string doinbackground(string... params) {             //........call timer function         }          @override         protected void onpreexecute() {             super.onpreexecute();             progressbar.setmessage("please wait... ");             progressbar.setprogressstyle(progressdialog.style_spinner);             progressbar.setindeterminate(true);             progressbar.setcanceledontouchoutside(false);             progressbar.settitle(" ");             progressbar.setcancelable(false);             progressbar.show();         }          @override         protected void onpostexecute(string result) {             try             {                 super.onpostexecute(result);                 message msg = new message();                 msg.obj = result;                 statushandler.sendmessage(msg);                 progressbar.dismiss();             }catch(exception ex){              }         }      }      public handler getactivitytaskhandler = new handler() {         @override         public void handlemessage(message msg) {             super.handlemessage(msg);             progressbar.dismiss();         }     };