26. A SearchView inside the app bar is an example of an:
- Action view
- Toast
- Context menu
- Overflow item
Answer: A) Action view
Explanation: Action views embed widgets in the app bar.
MCQs / Computer Science / Action Bar and User Interface Design
Action Bar and User Interface Design MCQs — Computer Science (page 2)
34 multiple-choice questions on Action Bar and User Interface Design from Computer Science, each with the correct answer and, where available, a teacher's explanation. Read through them to revise the chapter, then practise the same questions one by one to test yourself.
27. The action bar was introduced in Android:
- 9 Pie
- 3.0 Honeycomb
- 1.0
- 5.0 Lollipop
Answer: B) 3.0 Honeycomb
Explanation: Honeycomb added the Action Bar for tablets.
28. Which method inflates the options menu?
- onPrepareMenu()
- onCreateOptionsMenu()
- onCreateContextMenu()
- onOptionsItemSelected()
Answer: B) onCreateOptionsMenu()
Explanation: onCreateOptionsMenu inflates the menu XML.
29. Menu resources are stored in:
- res/values
- res/menu
- res/xml
- res/layout
Answer: B) res/menu
Explanation: Menu XML files live in res/menu.
30. The bar at the top of an activity showing the title and actions is called the:
- Status bar
- Notification drawer
- Navigation bar
- Action bar / app bar
Answer: D) Action bar / app bar
Explanation: The action bar (app bar) shows title, Up button, actions and overflow.
31. onOptionsItemSelected should return true when:
- The item is disabled
- The click has been handled
- The menu must be hidden
- An error occurs
Answer: B) The click has been handled
Explanation: Returning true consumes the event.
32. Which method makes a Toolbar act as the activity's action bar?
- toolbar.attach()
- setActionBar(true)
- setSupportActionBar(toolbar)
- supportActionBar = toolbar
Answer: C) setSupportActionBar(toolbar)
Explanation: setSupportActionBar() installs the Toolbar as the app bar.
33. A context menu appears when the user:
- Opens the notification drawer
- Taps the overflow icon
- Rotates the phone
- Long-presses a view registered for a context menu
Answer: D) Long-presses a view registered for a context menu
Explanation: Floating context menus appear on long press.
34. A dialog asking "Delete record?" with Delete/Cancel buttons is created with:
- NotificationCompat.Builder
- PopupMenu
- Toast.makeText
- AlertDialog / MaterialAlertDialogBuilder
Answer: D) AlertDialog / MaterialAlertDialogBuilder
Explanation: Alert dialogs show a title, message and buttons.
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Practise Action Bar and User Interface Design MCQs
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