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iOS 5 App Development Basics

Instructions:

Answer 50 questions in 15 minutes.
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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. Formatting placeholder for a floating point value with one digit on the left of the decimal and two digits on the right
%1.2f
alpha ... 1
proxy
Nib (but a few call it 'zib' but that's not preferred)

2. Postcondition repetition structure syntax
do{/*stuff to do here*/}while(<boolean expression>);
UITextView
main()
controller

3. Directive to include other interface files that an application might need to access
immersive
import
==
Object-oriented programming

4. RAM for iPhone
Object Library
Double-click
hash
512MB

5. Key sequence to hide/show the Assistant Editor
ption+Command+Return
protocols
@synthesize
inspector and library

6. Connections between Objects in the Interface Builder and the header file are formed by _____-_______ from the object to the proper place in the header file
control-dragging
<type> <variableName>;
hash
double

7. Class that builds upon another class
IBAction)moveMe:(id)sender;
subclass
Right-click on it in the Navigator panel and choose 'Open as...' and select 'Source Code'
affine

8. To use a new class you need to _____ it
instantiate
Option-click a symbol
NSURLRequest
contentSize

9. Denotes a class method
workspace
Jump Bar
%@
+

10. A virtual 'box' for organizing related projects
interface and implementation files
workspace
stub
while(<boolean expression>){/*stuff to do here*/}

11. To zoom between an overview of the entire storyboard and the actual size view - ______ the storyboard background.
UIImageView
sending an object a message
workspace
Double-click

12. Always used to end the list of objects when initializing an array
nil
Attribute settings for some onscreen controls (like text areas) that analyze content and provide helpful links based on what they find. For example - phone numbers can be touched to dial the phone; web addresses can launch Safari if tapped - etc
Command+0
%1.2f

13. Key sequence to run an app in Xcode
Cocoa Touch
Command+R
label
||

14. 4 Top down technology layers making up iOS
Cocoa Touch - Media - Core Services - Core OS
Identity Inspector
Attributes Inspector
NSLog

15. Term used to describe each screen of an iPhone app
instantiate
Something unique - based on the app's name (perhaps abbreviated). Avoid 'NS' or 'UI' since they are used in Apple's frameworks. A framework or library should always be prefixed. For a simple app - they are not necessary.
view
@

16. Method used to print information in an output panel
Seques .... relationships
for(<initialization>;<test condition>;<update instruction>){/*do this over and over*/}
NO
NSLog

17. A class that implements a protocol is said to ____ to that protocol
Command+S
Single View Application
conform
interface and implementation files

18. A class that manages the user's interaction with the iDevice
viewDidLoad
hasShrunk==YES && hasMoved == YES
320 x 480
view controller

19. The Inspector you will need if you want to connect a custom class to an object in Interface Builder
!=
'Interface Builder'
Right-click on it in the Navigator panel and choose 'Open as...' and select 'Source Code'
Identity Inspector

20. Master class in iOS
header
property list
NSObject
performance

21. Defines what an object can do
class
alpha ... 1
UILabel *myLabel = [[UILabel alloc] init];
-

22. IDE for iPhone Development
Xcode
Object library
alpha
view controller

23. Although it is possible to declare an instance variable and then define a corresponding property - you may also use @property alone to...
Utility apps
implicitly declare a matching instance variable
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1
Home button

24. strong and nonatomic are examples of ...
attributes
property list
inspector and library
eXtensible Markup Language

25. Symbol often denoting a 'pointer'
%@
*
Identity Inspector
Command+R

26. XML
graduationParty ... addAttendee:withDish
switch
eXtensible Markup Language
NSLog

27. Data type for true/false type variables
bool
IBOutlet
disclosure
#import 'myFile.h'

28. @synthesize directives should be placed _____ (above or below) the @implementation directive in the implementation file
rand( )%21
Option+Command+4
import
below

29. This keyword in the property directive is related to the concept of mutability and basically asks Apple to handle the details. This is the more 'relaxed' - less 'powerful' setting of two possibilities
Jump Bar
2
Hold down the Option key and point to the other label. The distance will be shown
nonatomic

30. _____ are methods that we can connect to events.
x--;
Actions
hash
NSLog(@'%s' - __FUNCTION__);

31. Syntax for block-comment
/*blah blah blah */
!
320 x 480
Option+Command+ 0

32. Storage location for a piece of information
Control-click on the View Controller's icon to bring up a Connections dialog
variable
NO
Utility apps

33. A skeleton (holding place) or framework of code that will be completed in the future; provided initially so code will compile (but it may not function)
Application Programming Interface
stub
@
control-dragging

34. In the US - the '#' symbol is often called the ____ symbol
storyboard
implementation file
superclass
pound

35. Dimensions of iPad (in points)
<>
1024 x 768
Isolate the functional components of an app
pipe

36. File name suffix indicating an image is suitable for retina display
utility
Cocoa Touch - Media - Core Services - Core OS
@2x
do{/*stuff to do here*/}while(<boolean expression>);

37. Syntax for reserving memory and initializing an object
iOS Simulator
[[<class name> alloc] init];
alpha ... 0
do not

38. Negation symbol
!
Cocoa Touch
User Interface
model

39. Apple's classes often provide a special initialization method called a _____ method
convenience
view controller
Xcode
x--;

40. Extension for MainStoryboard
main()
[[<class name> alloc] init];
UIViewController
storyboard

41. 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'

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

43. Two-way selection logic block
Identity Inspector
if(<boolean condition>){/* stuff to do*/} else{ /*stuff to do*/}
Cocoa Touch - Media - Core Services - Core OS
NSURLRequest

44. The Inspector you would use to control your layout in Interface Builder
Size Inspector
Attributes Inspector
XML
Snapshot feature

45. Key sequence to hide/show Navigator View
UIWindow
nested message send
Command+0
Seques .... relationships

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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183

47. Extension for interface file
implementation file
h
nested message send
Utility apps

48. Purpose of the 'Auto-enable Return Key' attribute for text fields
below
@2x
com.basicversity
Disables the Return key on the keyboard unless the user has entered at least a single character of input into the field

49. If a method name includes a colon (:) this indicates a required _________
protocols
parameter
IBOutlet
inspector and library

50. Name of the '|' symbol
pipe
IBOutlet
320 x 480
@

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iOS 5 App Development Basics

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