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

Specify the ID in the

Then use two findViewById to access fields in the layout

View test1View = findViewById(R.id.test1);
TextView test1TextView = (TextView) test1View.findViewById(R.id.text);

Using that approach, you can access any field in any include you have.