android - on long click listener delete item in list dialog -

i using dialog show item of list of string code is

 final charsequence[] items = {"1", "2", "3"};              alertdialog.builder builder = new alertdialog.builder(activity.this);             builder.setitems(items, new dialoginterface.onclicklistener() {                 public void onclick(dialoginterface dialog, int item) {                     toast.maketext(getapplicationcontext(), items[item], toast.length_short).show();                 }              }).show(); 

now question how implement onlongclicklistener method to delete selected item dialog looking shown in image

you need implement onitemlongclick method follows:

listview.setonitemlongclicklistener(new adapterview.onitemlongclicklistener() {     @override     public boolean onitemlongclick(adapterview<?> av, view v, int pos, long id) {         // todo: position of item clicked.          //       delete collection eg.arraylist.         //       call notifydatasetchanged refresh          //       views displaying updated list.         return true;     } });