Android AND-401 Online Practice Questions and Exam Preparation

Android AND-401 Online Questions & Answers

• Question 11:

  What Activity method you use to retrieve a reference to an Android view by using the id attribute of a resource XML?

  A. findViewByReference(int id)
  B. findViewById(int id)
  C. retrieveResourceById(int id)
  D. findViewById(String id)
  B. findViewById(int id)

• Question 12:

  Which of the following is the base class of all UI components?

  A. ListView
  B. Layout
  C. View
  D. ViewGroup
  C. View

• Question 13:

  Which of the following best explains the Android context menus?

  A. It is a popup menu displays a list of items in a vertical list that's anchored to the view that invoked the menu.
  B. It is a floating menu that appears when the user performs a long-click on an element. It provides actions that affect the selected content or context frame.
  C. It is the primary collection of menu items for an activity. It's where you should place actions that have a global impact on the app, such as "Search," "Compose email," and "Settings".
  D. It is a sub-menu of an options menu item.
  B. It is a floating menu that appears when the user performs a long-click on an element. It provides actions that affect the selected content or context frame.

• Question 14:

  During an Activity life-cycle, what is the first callback method invoked by the system?

  A. onStop()
  B. onStart()
  C. onCreate()
  D. onRestore()
  C. onCreate()

• Question 15:

  Which of the following is NOT true about class ListActivity?

  A. An activity that displays a list of items by binding to a data set.
  B. Its layout must be set by calling method setContentView inside onCreate.
  C. It contains a ListView object that can be bound to different data sets. Binding, screen layout, and row layout are discussed in the following sections.
  D. A data source that can be bound in a ListActivity can be an array or Cursor holding query results.
  B. Its layout must be set by calling method setContentView inside onCreate.

• Question 16:

  Which of the following is true about attribute android:windowSoftInputMode of the tag in file AndroidManifest.xml?

  A. It specifies whether the window is in full screen or not.
  B. It adjusts how the main window of the activity interacts with keyboard.
  C. It adjusts how the window should be launched.
  D. It adjusts the window orientation.
  B. It adjusts how the main window of the activity interacts with keyboard.

• Question 17:

  What two methods you have to override when implementing Android option menus?

  A. onCreateOptionsMenu, onCreateContextMenu
  B. onCreateContextMenu, onContextItemSelected
  C. onCreateOptionsMenu, onOptionsItemSelected
  D. onCreateOptionsMenu, onContextItemSelected
  C. onCreateOptionsMenu, onOptionsItemSelected

• Question 18:

  Method onDraw() of class android.view.View has the following signature:

  A. public void onDraw(Color)
  B. public void onDraw(Canvas)
  C. public boolean onDraw(Canvas)
  D. public Canvas onDraw()
  B. public void onDraw(Canvas)

• Question 19:

  What does the src folder contain?

  A. Image and icon files.
  B. XML resource files.
  C. The application manifest file.
  D. Java source code files.
  D. Java source code files.

• Question 20:

  An AsyncTask can be cancelled anytime from any thread.

  A. True
  B. False
  A. True