Chapter 3. Fragment Lifecycle and Specialization

This chapter discusses the relationship of the lifecycle of fragments to that of activities, and demonstrates the appropriate programming actions at the various points in the lifecycle. The special purpose fragment classes ListFragment and DialogFragment are introduced with coverage of their use and how their behavior in the activity lifecycle differs from that of standard fragments.

The following topics are covered in this chapter:

• Fragment setup/display event sequence

• Fragment teardown/hide event sequence

• Working with the ListFragment class

• Working with the DialogFragment class

• Interacting with a DialogFragment class as a traditional Dialog class

• Wrapping an existing Dialog class in a DialogFragment class

By the end of this chapter, we will be able to coordinate the setup and teardown of fragments within their host activities, and be able to effectively utilize the ListFragment and DialogFragment classes.