Android:position of an element in a scrollable window -

i have 20 buttons in vertical layout in scrollable window. while click on button want know position of button on screen.some times click button after scrolling.i want exact position @ time too.what code that.please me.

never use 20 buttons inside layout. use listview button , use onitem click of listview , button position:

list view onitem click:

listid.setonitemclicklistener(new adapterview.onitemclicklistener() {        public void onitemclick(adapterview<?> list, view v, int pos, long id) {           -------here position displays **pos**----                  }     }); 

refer example nice listview sample