android - Change Listview focus -

android - Change Listview focus -

i want focus on next list item when button(external-not in listitem) clicked of list view. tried doesn't work :

vegetablelist.setadapter(new arrayadapter<string>(getapplicationcontext(), android.r.layout.simple_list_item_1, veglist)); vegetablelist.setonitemclicklistener(new onitemclicklistener() { @override public void onitemclick(adapterview<?> parent, view view, int position, long id) { current_veg_item = veglist[position]; parent.getchildat(position).setbackgroundcolor(color.parsecolor("#33cc99")); if (save != -1 && save != position) { parent.getchildat(save).setbackgroundcolor(color.white); } save = position; } });

button onclicklistener :

onclick{ vegetablelist.setitemchecked(3, true); }

how can focus next item of selected item when click button?

mlist.performitemclick( mlist.getadapter().getview(mactiveposition, null, null), mactiveposition, mlist.getadapter().getitemid(mactiveposition));

android listview