user interface - Android: Show elapsed time on UI for given start time and continue to update it with handler (timer) -

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i project start time web service , work out time project had taken current date. store datetime web in starttimelist.

here how i'm getting current elapsed time on project:

public void settimeelapsed() {     try {         calendar calstart = calendar.getinstance();         simpledateformat sdf = new simpledateformat("yyyy-mm-dd hh:mm:ss");         calstart.settime(sdf.parse(starttimelist.get(0)));          long startmillis = calstart.gettimeinmillis();          long = system.currenttimemillis();         long difference = - startmillis;          calendar caldiff = calendar.getinstance();         caldiff.settimeinmillis(difference);          int eyear = caldiff.get(calendar.year);         int emonth = caldiff.get(calendar.month);         int eday = caldiff.get(calendar.day_of_month);         int ehour = caldiff.get(calendar.hour_of_day);         int emin = caldiff.get(calendar.minute);         int esec = caldiff.get(calendar.second);          mimduration.settext(string.format("%d months %d days %d:%d:%d", emonth, eday, ehour, emin, esec));       } catch (parseexception e) {         log.e(tag, "error: " + e.getmessage());     } }

however not keep updating elapsed time user see real time. need add handler (timer) of sorts keep updating time on ui.

any appreciated. thank you.

you can create timertask , use timer schedule periodically. inside run method can update ui either using runonuithread method or handler.

so 

timer.scheduleatfixedrate(new timertask() {          @override         public void run() {             long spenttime = system.currenttimemillis() - starttime;              runonuithread(new runnable() {                 @override                 public void run() {                  }             });          }     },0, interval);

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