Android Programming: The Big Nerd Ranch Guide, Third Edition

Adding a UI Fragment to the FragmentManager

When the Fragment class was introduced in Honeycomb, the Activity class was changed to include a piece called the FragmentManager. The FragmentManager is responsible for managing your fragments and adding their views to the activity’s view hierarchy (Figure 7.18).

The FragmentManager handles two things: a list of fragments and a back stack of fragment transactions (which you will learn about shortly).

Figure 7.18  The FragmentManager

Activity connects to FragmentManager, that further connects to FragmentTransaction Via Backstack, and Fragment via Fragments.

For CriminalIntent, ...