Deck 7: Reveal Displaying Pictures in a Gridview

Question 1

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

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

Answer 1

B

Question 2

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

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

Answer 2

B

Question 3

You can only scroll in one direction using a GridView control.

Answer 3

False

Question 4

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

Question 5

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

Question 6

Images are a powerful marketing tool by adding visual appeal to your application.

Question 7

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

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

Question 8

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

Question 9

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

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

Question 10

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

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

Question 11

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

Question 12

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

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

Question 13

The GridView control is the only control that monitors for click events.

Question 14

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

Question 15

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 16

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

Question 17

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

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

Question 18

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

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

Question 19

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

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

Question 20

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

A) control1
B) defaultGallery
C) gridView1
D) theGallery

Question 21

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

Question 22

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

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

Question 23

The ____ statement returns the value from a method.

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

Question 24

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

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

Question 25

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

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

Question 26

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

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

Question 27

The code to reference an image called panda. p ng is ____________________.

Question 28

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

Question 29

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

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

Question 30

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

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

Question 31

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

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

Question 32

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

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

Question 33

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

Question 34

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

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

Question 35

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

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

Question 36

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

Question 37

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

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

Question 38

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

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

Question 39

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

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

Question 40

A common aspect ratio is ____.

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

Question 41

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

Question 42

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

Question 43

A(n) ____________________ is used to initialize the instance variables of an object.

Question 44

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

Question 45

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

Question 46

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

Question 47

The Context class is in the ____________________ package.

Question 48

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

Question 49

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

Question 50

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