android - Seekbar not updating smoothly with media player -

here issue seekbar updation media player seekbar not working media player .. when user touch on seekbar takes backward user touched ... here code snippet .. know issue behind ... please t

seekbar = (seekbar) findviewbyid(r.id.seekbar);     seekbar.setonclicklistener(this); seekbar.setonseekbarchangelistener(this); @override public void onprogresschanged(seekbar arg0, int arg1, boolean arg2) {     // todo auto-generated method stub  }  @override public void onstarttrackingtouch(seekbar arg0) {     mhandler.removecallbacks(mupdatetimetask);  }  @override public void onstoptrackingtouch(seekbar arg0) {     mhandler.removecallbacks(mupdatetimetask);     int totalduration = mp.getduration();     int currentposition = utils.progresstotimer(seekbar.getprogress(),             totalduration);      // forward or backward seconds     mp.seekto(currentposition);      // update timer progress again     updateprogressbar();  } 

here utilities class

public class utilities {  public string millisecondstotimer(long milliseconds){         string finaltimerstring = "";         string secondsstring = "";          // convert total duration time            int hours = (int)( milliseconds / (1000*60*60));            int minutes = (int)(milliseconds % (1000*60*60)) / (1000*60);            int seconds = (int) ((milliseconds % (1000*60*60)) % (1000*60) / 1000);            // add hours if there            if(hours > 0){                finaltimerstring = hours + ":";            }             // prepending 0 seconds if 1 digit            if(seconds < 10){                secondsstring = "0" + seconds;            }else{                secondsstring = "" + seconds;}             finaltimerstring = finaltimerstring + minutes + ":" + secondsstring;          // return timer string         return finaltimerstring;     }  public int getprogresspercentage(long currentduration, long totalduration){         double percentage = (double) 0;          long currentseconds = (int) (currentduration / 1000);         long totalseconds = (int) (totalduration / 1000);          // calculating percentage         percentage =(((double)currentseconds)/totalseconds)*100;          // return percentage         return percentage.intvalue();     }  public int progresstotimer(int progress, int totalduration) {         int currentduration = 0;         totalduration = (int) (totalduration / 1000);         currentduration = (int) ((((double)progress) / 100) * totalduration);          // return current duration in milliseconds         return currentduration * 1000;     } 

}

this entire code seekbar not being updated properly