Android :: Selector - Listview With A Custom Item_row.xml

I have a listview with a custom item_row.xml. I've defined a selector in this way:

CODE:................

And then put into item_row.xml in this way:

CODE:...................

I want 2 things:

When i move with arrow keys, the item selected changed its background. It's works fine with the actual implementation of selector.
When i press a item, the item changed its background too, but it doesn't work with the actual selector.

I try to set also into the ListView android:listSelector="@drawable/list_selector" but it doesn't work neither.