Deck 2: Simplify the Android User Interface

Question 1

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

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

Answer 1

D

Question 2

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

Answer 2

True

Question 3

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

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

Answer 3

C

Question 4

It is a Java standard to use camel-casing for class names, which begins the name with an uppercase letter, omitting spaces, and using uppercase letters to emphasize the start of a new word.

Question 5

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

Question 6

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

Question 7

The Minimum SDK text box contains the ____.

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

Question 8

Designing a program is analogous to ____.

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

Question 9

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

Question 10

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

Question 11

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

Question 12

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

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

Question 13

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

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

Question 14

The most popular free Android app is ____.

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

Question 15

The unit sp stands for ____.

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

Question 16

Before code can be written for an Android app, the user interface must first be designed.

Question 17

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

Question 18

Comments in Java start with pound (#) signs.

Question 19

____ is not a valid measurement unit for text display.

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

Question 20

There are three phases to the program development lifecycle.

Question 21

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

Question 22

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

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

Question 23

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

Question 24

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

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

Question 25

Errors in program code are indicated by ____.

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

Question 26

The ____ method creates an intent to start another Activity.

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

Question 27

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

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

Question 28

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

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

Question 29

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
C) placeholder
B) intent
D) pointer

Question 30

The ____ method displays the content of a specific screen.

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

Question 31

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

Question 32

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

Question 33

The first phase of program development is to ____.

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

Question 34

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

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

Question 35

The entry point of an Activity is the ____ method.

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

Question 36

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

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

Question 37

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

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

Question 38

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

Question 39

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

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

Question 40

____ wait for user interaction.

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

Question 41

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

Question 42

The term ____________________ in the examples refers to the current Activity.

Question 43

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

Question 44

You use the ____________________ property to name a control.

Question 45

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

Question 46

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

Question 47

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

Question 48

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

Question 49

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

Question 50

The ____________________ method creates an intent to start another activity.