Описание тега android-fragmentactivity
An Activity subclass introduced through the compatibility package to provide an implementation of the Fragment framework on version below Honeycomb.
An Activity subclass introduced through the compatibility package to provide an implementation of the Fragment framework on version below Honeycomb. This class doesn't work with Fragments from the SDK, it needs the Fragment related classes from the compatibility package.
More information can be found in the documentation of the FragmentActivity.