Deck 4: Explore Icons and Decision Making Controls

Question 1

Launcher icons form the first impression of your app on prospective users in Google Play.

Answer 1

True

Question 2

Which of the following types of controls always operates independently, therefore selecting it will never deselect any other controls?

A) CheckBox control
B) EachButton control
C) SingleSelect control
D) TextView control

Answer 2

A

Question 3

Which of the following types of graphics are best to use for icon design because the images can be scaled without loss of detail?

A) Composite graphics
B) Raster graphics
C) Scanned graphics
D) Vector-based graphics

Answer 3

D

Question 4

In what graphics format should launcher icons be saved?

A) . p n g
B) . j p g
C) .tif
D) . G I f

Question 5

Never offer a default selection, as it complicates user input.

Question 6

The statement 6 is true.

Question 7

RadioButton controls are circular in shape, while CheckBox controls are square.

Question 8

What is the icon used to start your app called?

A) boot icon
B) launcher icon
C) master icon
D) starter icon

Question 9

A toast notification communicates messages to the user.

Question 10

The following condition is valid: (6 || ticketPrice) > (450.45 == "vacation") .

Question 11

Which property can center a control horizontally as well as position it at other places on the screen?

A) elastic property
B) gravity property
C) rubber band property
D) stretch property

Question 12

Which of the following terms best describes a triplet of three colors which encodes different colors?

A) controlled color code
B) hexadecimal color code
C) standard color encoding
D) triple-coded color

Question 13

Whenever possible, you should use the default launcher icon so your app looks as uniform as possible with other apps.

Question 14

Java automatically indents statements within an If Else statement to indicate that the statements are within the If Else structure.

Question 15

Which term can be used to change the spacing around each object in your layout?

A) borders
B) margins
C) cellpadding
D) cellspacing

Question 16

When you are comparing one string to another string, use the == operator.

Question 17

In what are RadioButton controls usually used together, which causes only one RadioButton to be selected at a time?

A) GroupControl
B) MultiButton
C) RadioGroup
D) Selector

Question 18

A toast notification is an easy way to inform the user of a failed data validation.

Question 19

The icon on the home screen that represents your application is referred to as which of the following?

A) home icon
B) logo icon
C) launcher icon
D) app icon

Question 20

Decision-making statements in Java allow you to test which of the following?

A) conditions
B) data types
C) imperatives
D) syntax

Question 21

What is used to compare Strings in Java for equality?

A) = operator
B) == operator
C) compareTo method
D) equals method

Question 22

What method call is used to display a toast notification?

A) Toast. alert
B) Toast. makeText
C) Toast. showText
D) Toast. toastNotify

Question 23

What is a common mistake made when forming a conditional statement?

A) using the assignment operator instead of the comparison operator
B) using the compareTo method instead of the assignment operator
C) using the greater than operator instead of the assignment operator
D) using the less than operator instead of the comparison operator

Question 24

A custom launcher icon image can be placed in the res/mipmap folder by adding a(n) _______________________ using a built-in wizard in Android Studio.

Question 25

When does a toast notification disappear from the screen?

A) It always fades after one second.
B) It automatically fades after a set amount of time.
C) It never goes away.
D) It requires a button push to fade.

Question 26

For a extra high-density screen, the pixel size of an icon should be ____________________ (state as number x number ).

Question 27

You can test for a(n) ____________________ being true or false and change the flow of what happens in a program based on the user's input.

Question 28

When an If statement is placed inside another If statement, what is the inner If statement considered to be?

A) folded
B) internal
C) nested
D) stacked

Question 29

To compare the alphabetical order of two strings, what should be used?

A) operator
B) > operator
C) compareTo method
D) equals method

Question 30

What is the method used to test a checked property on a radio button?

A) getChecked() method
B) isChecked() method
C) checked() method
D) setChecked() method

Question 31

When you publish an app in the Android Market, you must provide an icon of size ____________________ (state as number x number ) as the display icon in the Market.

Question 32

What does a toast notification use to display a message?

A) half of the screen
B) only the amount of space needed
C) one line
D) the whole screen

Question 33

____________________ controls are used to select and deselect an option.

Question 34

What tool does Java provide to compare the relationship between the variables being tested in conditional statements ?

A) byte analysis
B) logical operators
C) relational operators
D) static methods

Question 35

When more than one condition is included in an If statement, what is the condition called?

A) compound condition
B) expanded condition
C) linked condition
D) multicondition

Question 36

When you have one set of instructions to execute when a condition is true and another set of instructions if the same condition is false, which statement would you use?

A) If statement
B) If Else statement
C) While statement
D) Do statement

Question 37

What is the resulting value of the expression "sears".compareTo("chicago") ?

A) equal to 0
B) greater than 0
C) less than 0
D) unknown

Question 38

Which of the following is the correct syntax for displaying a toast message for a long length of time?

A) Toast.makeText(MainActivity.this, Toast.LENGTH_LONG.show("A toast message");
B) Toast.makeText(MainActivity.this, "A toast message", Toast.LENGTH_LONG).show( );
C) Toast.LENGTH_LONG(MainActivity.this, "A toast message", Toast.makeText).show( );
D) Toast.show(MainActivity.this, "A toast message", Toast.makeTest).LENGTH_LONG;

Question 39

Which symbol is the operator for "equal to?"

A) =
B) ==
C) !=
D) -

Question 40

Which term defines a fundamental control structure used in computer programming?

A) choice point
B) code block
C) decision structure
D) referential structure

Question 41

The code to display the short toast message "Hi mom" is _________________________________________________________________.

Question 42

When two Strings are compared, they are ordered ____________________.

Question 43

The hexadecimal color code for red is ____________________.

Question 44

The truth value of the expression !(false && (true || !false) && (!false || !true)) is ____________________.

Question 45

To create a toast message of long duration, you use the _____________________ keyword in the makeText method.

Question 46

Let the String variable city be set to the value "Boston" . The truth value of the expression (city.compareTo("Anaheim") > 0) is ____________________.

Question 47

The condition necessary to test if a variable stockPrice is below 0.30 is ____________________.

Question 48

The isChecked method makes use of the ____________________ property of the RadioButton or CheckBox control.

Question 49

The process of verifying that a value entered by a user is acceptable for what the program is expecting is called ________________.

Question 50

Instead of eyeballing the controls on the user interface for alignment, you can use the ____________________ property to create the desired spacing around controls.