How to update ListView dynamically on each iteration of a sorting process in android? -

i have arraylist of 9 integer values. want sort arraylist based on ascending order of values. after each iteration, want display list in listview. after next iteration, listview should update result of new iteration. used below code sorting. dont know how refresh listview on each iteration.

            integer[] numbers = new integer[] {9,8,7,6,5,4,3,2,1};                 arraylist<integer> numberlist = new arraylist<integer>();               numberlist.addall( arrays.aslist(numbers) );                list list = numberlist;              //method sorting list             dosort(numberlist);              // create arrayadapter using number list.              listadapter = new arrayadapter<integer>(this, r.layout.listdata, numberlist);              // set arrayadapter listview's adapter.               mainlistview.setadapter( listadapter );             }        public static void swap(list<integer> sort, int i, int j) {             int tmp = sort.get(i);             sort.set(i, sort.get(j));             sort.set(j, tmp);        }        public static void dosort(list<integer> sort) {             int min;             (int = 0; < sort.size(); ++i) {                 //find minimum in rest of array                 min = i;                 (int j = + 1; j < sort.size(); ++j) {                     if (sort.get(j) < sort.get(min)) {                         min = j;                     }                 }                  //do swap                 swap(sort, i, min);              }         } 

sort list

public void sort(arraylist<integer> sort){ collections.sort(sort, new comparator<integer >() {      @override     public int compare(integer o1, integer o2) {         return (o1<o2 ? -1 : (o1==o2 ? 0 : 1));     }  }); } 

then make call list adapter

adapter.notifydatasetchanged(); 

the sort method sorting in ascending order change descending change o1<o2 o1>o2