How to specify id when uses include in layout xml file

Question

In my layout xml file, I have included other layout xml file (each with a different android id).

Answer 1

I found out, that if you are using tag in your include layout, then the ID of include transfers to the merge tag which is not real view.

So either remove merge, or replace it with some layout.

Tor Norbye wrote:

The tag is not a real view, so findByView will not find it. The @id attribute (and any other attributes you've set on the include tag) gets applied on the root tag of the included layout instead. So your activity.getView(R.id.included1) should in fact be the itself.