Deck 2: Simplify the Android User Interface

Question 1

The unit sp stands for ____.

A) scaled-dependent pixels
B) scaled-independent pixels
C) size preference
D) standard pixel

Answer 1

B

Question 2

The Text property changes font of the text written within a control.

Answer 2

False

Question 3

The ____ control can display an icon or a graphic such as a picture file or shape.

A) Display
B) JPG
C) ImageView
D) Picture

Answer 3

C

Question 4

Before any code is written for an Android app, the user interface must be designed.

Question 5

Resources for medium-density screens are placed in the ____ folder.

A) drawable-hdpi
B) drawable-ldpi
C) drawable-mdpi
D) drawable-medium

Question 6

The Android SDK includes two types of button controls: Button and ToggleButton.

Question 7

A ____ organizes layout components in a vertical column or horizontal row.

A) Bag layout
B) Graphical
C) Linear layout
D) Relative layout

Question 8

The Activity component is the point at which the application makes contact with the users.

Question 9

____ is not a valid measurement unit for text display.

A) dp
B) nm
C) px
D) sp

Question 10

A(n) ____ organizes layout components in relation to each other.

A) Extensible layout
B) Graphical layout
C) Linear layout
D) Relative layout

Question 11

The Java naming convention begins a name with an uppercase letter, omits spaces, and emphasizes each new word with an initial uppercase letter.

Question 12

The Android Manifest is not required, but it does make an application run faster.

Question 13

The most popular free Android app is ____.

A) Facebook
B) Google Maps
C) Pandora
D) YouTube

Question 14

Comments in Java start with pound ( # ) signs.

Question 15

Designing a program is most analogous to ____.

A) constructing a building
B) doing laundry
C) painting with watercolor
D) performing an experiment

Question 16

There are three phases to the program development life cycle.

Question 17

An object is a specific, concrete instance of a class.

Question 18

The Minimum SDK text box contains the ____.

A) API number
B) SDK number
C) serial number
D) UPC code

Question 19

To center a control, you can drag the control to the center of the emulator window until a ____ is displayed.

A) blue solid vertical line
B) green dashed vertical line
C) green solid vertical line
D) red dashed horizontal line

Question 20

When you import a package, you make all of the classes under that package available.

Question 21

The ____ statement is a way of making more Java functions available to your specific program.

A) assignment
B) import
C) include
D) reference

Question 22

The ____ method creates an intent to start another Activity.

A) beginActivity
B) createActivity
C) prepareActivity
D) startActivity

Question 23

A(n) ____________________ layout organizes components in a vertical column or a horizontal row.

Question 24

The ____ method displays the content of a specific screen.

A) drawContents
B) getDisplay
C) makeDisplay
D) setContentView

Question 25

A(n) ____ is simply a blueprint or a template for creating objects by defining its properties.

A) app
B) class
C) control
D) widget

Question 26

Using a(n) ____________________ layout, components can be placed to the left of, to the right of, above, or below another component.

Question 27

If an application has more than one Activity, the Android Manifest file must have a(n) ____ to navigate among the multiple activities.

A) activity manager
B) intent
C) placeholder
D) pointer

Question 28

In Java, a tap of the touch screen is known as a ____.

A) click event
B) display action
C) tap event
D) touch event

Question 29

Errors in program code are indicated by ____.

A) blue solid lines
B) bolded text
C) green curly lines
D) red curly lines

Question 30

A(n) ____ is a piece of code that actually serves as a placeholder to declare itself.

A) control
B) inclusion
C) event handler
D) stub

Question 31

The abbreviation for "density-independent pixels" is ____________________.

Question 32

When you ____ a class, you define one particular variation of the object within a class.

A) concretize
B) instantiate
C) make
D) stabilize

Question 33

____ are the components of a program that perform the tasks required in the program.

A) Activities
B) Event handlers
C) Processing objects
D) Task items

Question 34

____ wait for user interaction.

A) Action subscribers
B) Event listeners
C) Polling objects
D) Targeted components

Question 35

By default, the Linear layout organizes each new control directly ____________________ the previous control.

Question 36

The entry point of an Activity is the ____ method.

A) begin
B) onEntry
C) onCreate
D) prepare

Question 37

The ____________________ property sets the size of text in a control.

Question 38

A(n) ____ is a part of a program coded to respond to a specific event.

A) action responder
B) event handler
C) response method
D) triggered method

Question 39

A(n) ____ is a set of Java statements that can be included inside a Java class.

A) activity
B) block
C) intent
D) method

Question 40

The first phase of program development is to ____.

A) code the program
B) design the user interface
C) gather program requirements
D) test the program

Question 41

To make a one-line comment in Java, use ____________________.

Question 42

All Palette controls can use a property called ____________________ to provide a buffer from the top of the screen, to assist exact layout design.

Question 43

The term ____________________ refers to the current Java Activity.

Question 44

You use the ____________________ property to name a control.

Question 45

____________________ is the prefix that typically represents a Button in the code.

Question 46

High-density images should be placed in the ____________________ folder under the res folder.

Question 47

The ____________________ method moves the Activity it is called with to the top of the Activity stack.

Question 48

Any intent to start a new Activity requires a(n) ____________________ and the name of the Activity being opened.

Question 49

The ____________________ method creates an intent to start another activity.

Question 50

You can construct Activities using ____________________ layout files and a Java class.