Question 1

Android Studio's app templates have been updated to use the____________library, enabling the new apps you create to run on almost all Android devices, including ones with older Android versions.

Accepted Answer

A)  Compatibility 
B)  AppCompat 
C)  SupportLibrary 
D)  None of the above.

Question 2

A SeekBar listeners’s          method executes when the user moves the SeekBar’s thumb.

Accepted Answer

A)  onThumbMoved 
B)  userMovedThumb 
C)  onProgressChanged 
D)  None of the above

Question 3

Which of the next three statements is false?

Accepted Answer

A)  By default, there are no margins-spacing that separates views-around a GridLayout's cells. 
B)  The material design guidelines recommend 18dp minimum spacing between views. 
C)  GridLayout can enforce the recommended spacing between views. With the GridLayout selected in the Component Tree, in the Properties window, check the GridLayout's useDefaultMargins property (which sets it to true) to use the recommended margins around the layout's cells. 
D)  All of the above statements are true.

Question 4

You’ll use class          (package java.text) to create locale-specific cur-rency and percentage strings—an important part of internationalizing your apps.

Accepted Answer

A)  LocaleFormat 
B)  StringFormat 
C)  InternationalFormat 
D)  NumberFormat

Question 5

Which of the following statements about Intents is false?

Accepted Answer

A)  Intents are Android's mechanism for communicating between executable components-such as activities, background services and the operating system. 
B)  You state your intent, then Android uses intent messaging to coordinate the executable components to accomplish what you intend to do. 
C)  This tight coupling makes it easy to mix and match parts of different applications. 
D)  You tell Android what you want to accomplish, then let Android find the installed applications with activities that can handle the task.

Question 6

Which of the following statements is false?

Accepted Answer

A)  A GridLayout (package android.widget) arranges views into rows and columns, each indexed from 0 like the elements of an array. 
B)  Each cell of a GridLayout can be empty or can hold one or more views, in-cluding layouts containing other views. 
C)  A GridLayout row’s height is determined by the row’s tallest view--similarly, a column’s width is defined by the column’s widest view. 
D)  A GridLayout’s views can span multiple rows and/or columns.

Question 7

To respond to events when the user changes the text in an EditText, you’ll use an anonymous inner class to implement the          interface (from package android-.text).

Accepted Answer

A)  EditTextListener 
B)  TextListener 
C)  EditTextWatcher 
D)  TextWatcher

Exam 3: Tip Calculator App

Android Studio's app templates have been updated to use the____________library, enabling the new apps you create to run on almost all Android devices, including ones with older Android versions.

A SeekBar listeners’s method executes when the user moves the SeekBar’s thumb.

Which of the next three statements is false?

You’ll use class (package java.text) to create locale-specific cur-rency and percentage strings—an important part of internationalizing your apps.

Which of the following statements about Intents is false?

Which of the following statements is false?

To respond to events when the user changes the text in an EditText, you’ll use an anonymous inner class to implement the interface (from package android-.text) .