Implementing android custom progress bar -

i'm new in android development , wanted know if can give me suggestion how implement somthing this.

i want implement custom progress bar this , want able somthing after progress bar passing each 1 of vertical lines , number of vertical lines should customizable programmatically. somthing play specific sound or display specific toast or anything.

sorry if question dumb , time.

update:

lets say, progress based on time in seconds , lines equal numbers of seconds. example whole progress in 40s , lines in 10th, 20th , 30th seconds.

you can set max value of progress bar:

progressbar.setmax(4); // or whatever number of notches want 

edit : sleep 1000 milliseconds (1 second), , update progress bar. keep updating until reaches max value.

private void startprogressthread() {     new thread(new runnable() {          @override         public void run() {              while (progressbar.getprogress() < progressbar.getmax()) {                  // wait 1 second                 thread.sleep(1000);                  progressbar.post(new runnable() {                      @override                     public void run() {                                                 progressbar.setprogress(progressbar.getprogress() + 1);                          // show toast or play sound.                         toast.maketext(getapplicationcontext(),                                         "it's been " + progressbar.getprogress() + " seconds.",                                        toast.length_short).show();                     }                  });              }          }      }).start(); }