What's the correct syntax to define an activity in manifest file

Question

What is the correct way of adding an activity to AndroidManifest.xml?

Actually I have seen in many places an activity defined as

Answer 1

Using relative paths is fine.
The path is separated by a dot, rather than a slash.

android:name=".one_path_level_down.MainActivity"
android:name=".one_path_level_down.DetailActivity"

The top level is the package level in your manifest file in the "package=". Something like the following: