Why can't one add/remove items from an ArrayAdapter?

Question

I am using an ArrayAdapter to populate the items to list in a android.widget.Spinner. That works all fine.

But now I wa

Answer 1

I know it's late but just a quick explanation: it's because method Arrays.asList(T... array) returns custom inner class named ArrayList that is read-only. As already said, you need to provide full impl. e.g. java.util.ArrayList.