Many classes and many layout files

What is better to have a main activity class interacting with many other classes and xml files or a main activity class with many xml files?

For example in my case I have username, password,date,email in different classes and xml files and the same for the main activity.ia there a way to manage it better? ( I need the xml files to be like that, I don’t know about Java classes much)

Thank everyone

原文链接：Many classes and many layout files