Deck 7: Reveal Displaying Pictures in a Gallery

Question 1

Arrays provide access to data by using a numeric ____ to identify each element in the array.

A) counter
C) position
B) index
D) threshold

Answer 1

B

Question 2

If you provide different resolutions of images to the Android system, you will have to manually select the correct resolution for a given system.

Answer 2

False

Question 3

Typically a(n) ____ is used to assign values to a Gallery control that has multiple items.

A) array
C) integer
B) boolean
D) String

Answer 3

A

Question 4

____ variables can be accessed from anywhere within the Java class in which they are declared.

A) Automatic
C) Local-level
B) Class-level
D) Temporary

Question 5

You can only scroll in one direction using the Gallery.

Question 6

When you add a new class that extends a base class, the methods that need implementation are auto-generated.

Question 7

A View represents a piece of the screen area that displays an object.

Question 8

If you want to use a Toast notification in an Activity that is the main Activity, you should use the Main.this reference as the correct Context.

Question 9

The length of an array is one more than the maximum subscript number.

Question 10

The ____ layout tool shows items in a center-locked, horizontally scrolling list.

A) Gallery
C) MediaPlayer
B) ImageViewer
D) TextView

Question 11

The first Gallery control in a project is named ____ by default.

A) control1
C) gallery1
B) defaultGallery
D) theGallery

Question 12

A(n) ____ container is a rectangular area of the screen that displays am image or text object.

A) Expanse
C) Space
B) Layout
D) View

Question 13

Images are a powerful marketing tool and add visual appeal to your application.

Question 14

If you wish, you can scale the Gallery images to full size of the screen.

Question 15

A Gallery of images is not very useful for selecting wallpaper images because of the large number of options.

Question 16

Typically you add an ImageView control by dragging the control onto the ____.

A) emulator
C) Palette
B) Gallery
D) XML code

Question 17

Using controls such as the Gallery and Spinner, a(n) ____ binds specific types of data and displays that data in a particular layout.

A) adapter
C) editor
B) context
D) view

Question 18

The ____ control displays items in a two-dimensional, scrollable grid.

A) Box
C) Swatch
B) GridView
D) Wallpaper

Question 19

The Gallery control is the only one that monitors for click events.

Question 20

The Gallery control is a widget that sits in the ____ category of the palette.

A) Images
C) Media
B) Images & Media
D) Viewing

Question 21

The method to set an image to an ImageView control is ____________________.

Question 22

The ____ method provides a number of arguments to its registered listeners.

A) beenClicked
C) onClick
B) clicked
D) onItemClick

Question 23

The ____ is the fractional relation of the width of an image compared with its height.

A) aspect ratio
C) scaling ratio
B) framing ratio
D) x-to-y ratio

Question 24

A common aspect ratio is ____.

A) 4:3
C) 16:8
B) 3:4
D) 10:6

Question 25

The code to reference an image called panda. png is ____________________.

Question 26

The ____ statement returns the value from a method.

A) if
C) return
B) for
D) while

Question 27

You declare a method's return type in its ____.

A) body
C) last line
B) declaration
D) name

Question 28

When the ImageAdapter class is called, the ____ method determines how many pictures should be displayed in the Gallery control.

A) count()
C) getNumber()
B) getCount()
D) getSize()

Question 29

The return type of a method that returns nothing is ____.

A) double
C) String
B) int
D) void

Question 30

In the onItemClick method, the variable that holds the actual View that was selected is the ____ argument.

A) first
C) third
B) second
D) fourth

Question 31

Users can quickly scroll the image Gallery by ____________________ their fingers.

Question 32

A(n) ____ variable is used to load and access resources for the application.

A) App
C) Program
B) Context
D) System

Question 33

The Toast class is part of the android.____ package.

A) context
C) layout
B) controls
D) widget

Question 34

In the onItemClick method, the variable that holds the position of the View in the Adapter is ____ argument.

A) first
C) third
B) second
D) fourth

Question 35

The last argument to the onItemClick method determines the row id of the selected item, which is most useful for a ____.

A) GridView
C) Spinner
B) ListView
D) TextView

Question 36

The scaling option that scales an image to fit the View type is ImageView.ScaleType.____.

A) CENTER
C) FIT_SIZE
B) CENTER_CROP
D) FIT_XY

Question 37

The ____________________ method provides the data model for the Gallery layout.

Question 38

In Android programs, you can place the ____________________ method in another method that is triggered only when the user touches the Gallery control.

Question 39

A(n) ____ return type indicates that the return type of a method is an integer.

A) char
C) int
B) double
D) number

Question 40

The scaling option that does not change the aspect ratio of an image is ImageView.ScaleType.____.

A) CENTER
C) FIT_SIZE
B) CENTER_CROP
D) FIT_XY

Question 41

A(n) ____________________ is a series of statements that perform some repeated task.

Question 42

The most powerful method in the ImageAdapter class is the ____________________ method.

Question 43

Keeping the ____________________ means that an image is not distorted from its original ratio of width to height .

Question 44

The code to return the length of a String variable called butter is ____________________.

Question 45

The code to resize an image variable pic to 275x200 is ____________________.

Question 46

____________________ are used to initialize the instance variables of an object.

Question 47

The code to find the size of an array called bananas is ____________________.

Question 48

The method to scale an ImageView a certain way is ____________________.

Question 49

To set an image on the surface of a Button control, you can set the ____________________ attribute in the XML code.

Question 50

The Context class is in the ____________________ package.