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iOS 5 App Development Basics

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Indicates a lack of any value at all
disclosure
57 x 57
performance
nil

2. Opens the Xcode Quick Help Assistant
instantiation
Integrated Development Environment
Option-click a symbol
modal views

3. Write a line of code creating a pointer to a wall paper image called 'wp1' that refers to a resource in an app with the file name 'wallPaper_01.png'

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4. An alternative way to see the connections between an object in the Interface Builder and it's code in Xcode without using the Connections inspector

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5. Attribute that informs Xcode not to worry about different parts of the application using a property at the same time
nonatomic
protocols
Model-View-Controller
Identity Inspector

6. Storage location for a piece of information
NSURL
IBOutlet
variable
Commmand-R

7. This type of app is mostly custom controllers and graphics
||
immersive
*
stub

8. In your implementation file - the _____ method (provided in stub form by Apple) runs after machine language code reserves some space in memory for your View. This method is often used to create a 'clean slate' as an app opens.
viewDidLoad
bgImages = [[NSArray alloc] initWithObjects: wp1 - wp2 - wp3 - wp4 - wp5 - nil];
header
-

9. Name of the drop-down menu in Xcode that lets you select the device used with the iOS Simulator
Scheme
Model-View-Controller
512MB
IBAction

10. In the MVC design pattern for iOS apps - view consists of the various...

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11. How do you show a storyboard file as source code?

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12. Syntax for block-comment
protocols
/*blah blah blah */
wrap
header

13. An example of a common collection data type
320 x 480
web view
NSArray
performance

14. @synthesize directives should be placed _____ (above or below) the @implementation directive in the implementation file
below
!=
accessors
retain

15. Class used for creating image views
#import 'myFile.h'
UIImageView
stub
while(<boolean expression>){/*stuff to do here*/}

16. The 'First Responder' in a scene is not an object it is considered a ________
proxy
web view
main()
+

17. OOP
storyboards
Object-oriented programming
Jump Bar
conform

18. API
hasShrunk==YES && hasMoved == YES
Disables the Return key on the keyboard unless the user has entered at least a single character of input into the field
Application Programming Interface
alpha ... 0

19. Extension for MainStoryboard
storyboard
NeXSTEP
[<object variable> <method name>];
int

20. Used to define a list of all methods and properties a class uses
while(<boolean expression>){/*stuff to do here*/}
interface file
==
web view

21. @property directives should be placed ____ (above or below) any IBActions in the header file
casting
import
Disables the Return key on the keyboard unless the user has entered at least a single character of input into the field
above

22. Alternative selection mechanism when many conditions exist
Application Programming Interface
switch
parameter
h

23. Calling a method is the same as...
Option+Command+ 0
sending an object a message
Cocoa is the development framework used for most native Mac OS X applications; Cocoa Touch is customized for a touch interface
image view

24. In a stepper control - when this attribute option is checked - the stepper's value is automatically set to the minimum value when the maximum value is exceeded (or vice versa).
[<object variable> <method name>];
wrap
Group
%1.2f

25. Class used for image manipulations such as scaling - rotation and translation. Its data structure represents a matrix used for affine transformations.
Object library
instantiation
CGAffineTransform
web view

26. Under what circumstances would you need an outlet for a button if it's just needed to trigger an action?

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27. Data type for highly precise numbers with huge numbers of decimal places
double
Collections
@synthesize directive
model

28. Typical header syntax for a button that will be applying the 'moveMe' action in an app
NSString *userName;
[[<class name> alloc] init];
IBAction)moveMe:(id)sender;
IBAction

29. Tests to see whether two values are equal
User Interface
==
Identity Inspector
parameter

30. Key sequence to save an Xcode file
320 x 480
modal views
YES
Command+S

31. Development approach (design pattern) to structure iOS applications
Model-View-Controller
void
controller
png

32. The Inspector you would use to control your layout in Interface Builder
%d
nibfile
interface and implementation files
Size Inspector

33. A unique combination of view controller and view
320 x 480
%@
modal views
scene

34. 'Build and run' keyboard shortcut
switch
myImage@2x.png
Commmand-R
strong

35. The HIG requires some kind of _____ element in a cell if there is more information available
x--;
@
scene
disclosure

36. Dimensions of iPad (in points)
NSDate
Command+R
1024 x 768
<>

37. Implements a logical OR condition
while(<boolean expression>){/*stuff to do here*/}
2
Attributes Inspector
||

38. A fully transparent image has an _____ property value of _____
YES
alpha ... 0
Right-click on it in the Navigator panel and choose 'Open as...' and select 'Source Code'
casting

39. You have an instance variable called 'myLabel' that is a member of UILabel. In an app - you set it's text property to 'Howdy' with the correctly-written command: myLabel.text = @'Howdy'; Re-write this command using [ ] message-sending syntax

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40. Term used to describe each screen of an iPhone app
view
Option-click a symbol
Send the 'resignFirstResponder' message to the object that currently controls the keyboard (such as a text field)
Document Outline Area or Outline View

41. A class that manages the user's interaction with the iDevice
below
protocols
view controller
hash

42. setters
mutators
label
UIImage *wp1 = [UIImage imageNamed:@'wallPaper_01.png'];
do{/*stuff to do here*/}while(<boolean expression>);

43. Memory aid for keyboard shortcuts in the Navigator panel

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44. What property needs to be set before a scroll view (UIScrollView) will scroll?
mutators
contentSize
instance variable
strong

45. Data type for true/false type variables
Snapshot feature
label.text=@'Hello World!';
57 x 57
bool

46. Although it is possible to declare an instance variable and then define a corresponding property - you may also use @property alone to...
/*blah blah blah */
implicitly declare a matching instance variable
myImage@2x.png
Determine how controls resize/reposition themselves when a device changes orientation

47. Syntax for single-line comment
storyboards
hash
UIViewController
//blah blah blah

48. Used to test an app without needing an actual physical device
NO
Document Outline Area or Outline View
Option+Command+4
iOS Simulator

49. Objective-C is an extension (super set) of...
To provide a convenient way of setting the button's title in the code
conform
C
main()

50. You are creating an app for a company whose URL is http://www.basicversity.com . What should be the company identifier for the app when you begin the project?
com.basicversity
Send the 'resignFirstResponder' message to the object that currently controls the keyboard (such as a text field)
IBAction
[shrinkButton setTitle:@'Grow' forState: UIControlStateNormal];