Answers to Self-Review Exercises

8.1.

a. Frame.

b. AnimatorListener.

c. ViewPropertyAnimator.

d. parallel.

8.2.

a. False. The property animation class ValueAnimator calculates property values over time, but you must specify an AnimatorUpdateListener in which you programmatically modify the target object’s property values.

b. False. Android 3.1 added the new utility class ViewPropertyAnimator to simplify property animation for Views and to allow multiple properties to be animated in parallel.

c. False. When an Activity begins executing, its onCreate method is called. This is followed by calls to the Activity’s onStart then onResume methods. Method onResume is also called when an Activity in the background returns to the foreground.