Apps how to define a static view?

[gumatias]

Hi guys,

I'm new to android and I'm having some issues trying to figure out how to have a header as a static view with an edit text and the rest of the layout can be either a dynamic ListView, ImageView or a view that contains an EditText.
I have no idea how to do that because when I try to extend a ListActivity to my class, I get an exception saying that I need to provide a ListView but I only want Lists to be shown when EditTexts or ImageViews are not on control.

Can anybody help me please???

Thanks in advance.