What is the difference between Acitvity_Main.xml and Fragment_main.xml files in Android Studio

Question

When ever i create a new project, the Fragment_main.xml file is added to my Layout folder and unlike in Eclipse it is this file that contains what is normally in the Activity_Main.xml file.Why is the Fragment_main.xml file always added to my projects in Android Studio and how is it different from the "regular" Activity_main.xml file?

Answer 1

The Activity_main.xml contains the Layout for the FragmentActivity and the fragment_main.xml is the Layout for the fragment.

For more information to fragments and how you can use it.
Visit: http://developer.android.com/training/basics/fragments/index.html