Chapter 7

Question 1

fragment

Answer 1

controller object that an activity can deputize to perform tasks. Most commonly, the task is managing a user interface. The UI can be an entire screen or one part of the screen.

Question 2

UI fragment

Answer 2

fragment managing a user interface. UI fragments has a view of its own that is inflated from a layout file.

Question 3

UI fragments separates the UI of your app into building blocks (t/f)

Answer 3

True

Question 4

cost of UI fragments

Answer 4

more complexity, more moving parts, and more code

Question 5

support library

Answer 5

includes Fragment class that you can use on any Android device running API level 4 or higher. Allows backwards-compatibility to be relatively painless.

Question 6

for compatibility with lower API levels, you subclass FragmentActivity instead of just Fragment class. (t/f)

Answer 6

True

Question 7

To host a UI fragment

Answer 7

Activity must :
define a spot in its layout for the fragments view;
manage the lifecycle of the fragment instance.

Question 8

difference between fragment lifecycle and activity lifecycle

Answer 8

fragment lifecycle methods are called by the hosting activity, not the OS. OS knows nothing about the fragments that an activity is using to manage things.