I have ListView. i am successfully able to populate that ListView but what is want now is when user long press on ListItem it should make a button visible which i made invisible when i am populating ListView.

here is snippet i have tried.

mItemListView.setOnItemLongClickListener(new OnItemLongClickListener() {

        @Override
        public boolean onItemLongClick(AdapterView<?> adapterview, View arg1,
                int arg2, long arg3) {
            LinearLayout view=(LinearLayout) mItemListView.getChildAt(arg2);
            view.getChildAt(0).setVisibility(View.VISIBLE);
            return false;
        }
    });

My adapter is extending BaseAdapter