Answers to Self-Review Exercises

4.1

a) Intents.

b) OnClickListener.

c) Application Not Responding (ANR).

d) data.

e) Explicit.

f) AndroidManifest.xml.

g) ListView.

h) ArrayAdapter.

i) ImageButton.

4.2

a) False. Extensive input/output should not be performed on the UI thread, since that would affect your app’s responsiveness.

b) True.

c) True.

d) False. ListView is a subclass of AdapterView—a GUI component is bound to a data source via an Adapter object.

e) True.