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iOS 5 App Development Objective C

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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1. NSValue - class...
methods for generating an instance
Generic object wrapper for other non-object data types
new instances of the class or retrieve some global property of the class.
draw images

2. A view is a subclass of _
UIView
%d
create a XIB file
a single-array can contain objects of different types

3. Each class picks one _ as it's designated initializer....
initializer
do so in viewDidLoad
CF - Ref
data source - view controller and delegate

4. Proceed through the loop - jump back to the top and check again
initializers
Continue
an object's property
Encapsulation of functionality

5. The only reason to temporarily own an object - is...
Used to find the time right now or to store past or future time/dates
to give it someone else - or another object
delegates and dataSources
you must import the header file of that class

6. An instance is a device for maintaining state. It's a box for _ of data.
message
methods for generating an instance
storage
an object's property

7. Files Owner...
group of global functions already assigned to this class
Is a placeholder object
Controller Objects[Managers]
Used to find the time right now or to store past or future time/dates

8. In Cocoa Touch - the table view asks another object _ what it should display...
nil
its dataSource
accessors - individually we call them 'getters' and 'setters'
wait until the loop finishes processing the event - at the end release it

9. Views have three properties related to their location and size: @property _ _;
a mechanism to enable specific callbacks
Anytime you call a method with new - alloc or copy. You own and must release that object.
methods
CGRect bounds - GCPoint center - CGRect frame

10. Any other initializer a class has calls the _ designated initializer....

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11. Asking a class or object to execute a method
collection of collections - NSArray of an NSArray
message
initializer
define it in the implemenation file

12. When a view controller presents a modal view controller - the _ of the modal view controller is set to be the parent of the presenting controller
rectangular
methods
parentViewController
the array becomes an owner of that object and has a pointer to it.

13. NSSet...
self
to give it someone else - or another object
unordered collection of objects - objects must be unique
class methods - initializers

14. Class methods do not operate on an _ or have any access to _ variables....
@synthesize
instance
NSCoder
Abstraction

15. When you send a message to _ - you are sending a message to _ - but demanding that the search for the method begin at the superclass....
initializer
viewWillDissapear: and viewWillAppear:
self
super - self

16. A function in the objective c library that simply displays or logs it's argument
callbacks
NSLog routine
You take ownership for an object you want to keep a pointer to
UIViewController

17. UIViewController has several methods that get called at certain times...
view controller
CGRect bounds
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear
UIView

18. A callback is a function that is supplied in advance of an event - and...
they need to be defined in the implementation file
delegates and dataSources
Controller Objects[Managers]
is called every time the event occurs

19. Primitives and C Structures...
a single-array can contain objects of different types
cannot be added to an array
NSBundle
Data Encapsulation

20. super - is used...
for inheritance - adopting the superclasses implementation
(id)initWithFrame:(CGRect)aRect;
pointers
retain

21. Core foundation classes are prefixed with _ and suffixed with _
CF - Ref
view
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear
create a XIB file

22. The root view controller typically creates the next view controller - and the next _ creates the one after that
you must import the header file of that class
view controller
the message release to all its entries
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear

23. Archiving works by creating an instance of _ - which is essentially just a container for data - and placing objects and their data inside it.
initializers
declaration and initialization of a variable
Hash table - Look up objects using a key to get a value.
NSCoder

24. class methods...
group of global functions already assigned to this class
lowercase - uppercase
view controller's initialization method
collection of collections - NSArray of an NSArray

25. To get the full path for a directory in the sandbox - you use the _ NSSearchPathForDirectoriesInDomains.
Maintenance of state
data
C Functionn
viewWillDissapear: and viewWillAppear:

26. A message is always contained in square brackets - and has three parts
receiver - selector - arguments
designated initializer
methods
Instantiation from scratch

27. NSNumber - class...
Object wrapper around primitive types like int - float - double - BOOl
the message release to all its entries
the array relinquishes ownership of that object and no longer has a pointer to it
copy - retain

28. Number one use of protocols in iOS...
type - name and value
NSLog routine
delegates and dataSources
message

29. Also - because arrays only hold a pointer to an object...
a single-array can contain objects of different types
Instantiation from scratch
its dataSource
implementation

30. We can use dot notation to reference...

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31. Each _ has a 'designated' initializer method....
receiver[message]
rectangular
class
NSBundle

32. Ready-made instances...
storage
class's
calling code that does the instantiation for you
new instances of the class or retrieve some global property of the class.

33. Objective C only allows for single inheritance - so in regards to class you only ever see the following pattern
rectangular
initializers
retain
@interface ClassName:SuperClassName

34. Variable names tend to start with a _ letter; class names tend to start with an _ letter.
initializer
lowercase - uppercase
the array becomes an owner of that object and has a pointer to it.
first responder

35. To load a Xib file manually - you use _
NSBundle
the message release to all its entries
new instances of the class or retrieve some global property of the class.
alloc - singleton - informational utility method?

36. A command directed to an object is called an...
receiver[message]
view controller's initialization method
storage
message

37. UITableViewController is a subclass of...
storage
only the innermost loop in which the break is executed is terminated
UIViewController
is called every time the event occurs

38. Why properties?
object
define it in the implemenation file
safety - subclassability and makes code look more consistent with C structs
new instances of the class or retrieve some global property of the class.

39. In object oriented languages - we call methods that get and set instance variables

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40. NSDate - class...
ready-made instances - instantiation from scratch - and nib based instantiation
object
Maintenance of state
Used to find the time right now or to store past or future time/dates

41. For view controllers that are closely related - like a table view controller and its detail view controller - you can simply give them _ that point to each other.
lowercase - uppercase
Object wrapper around primitive types like int - float - double - BOOl
UIViewController
instance variables

42. initWithFrame: the designated initializer for UIView gives the view
@synthesize
protocol
nil
size and position

43. Prefixing a character string with an @ symbol [specific - NSString class]...
creates an instance of NSString that holds the character string
copy - retain
methods for generating an instance
@synthesize

44. What happens when the last owner calls release?

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45. Execution of the break statement...
causes the program to immediately exit from the loop it is executing - whether its for - while or do
You take ownership for an object you want to keep a pointer to
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear
to give it someone else - or another object

46. If you have extra work you want to do on the view...
type - name and value
do so in viewDidLoad
values
wait until the loop finishes processing the event - at the end release it

47. Inside a method - _ is an implicit local variable. Typically - _ is used so that an object can send a message to itself....
arguments[message]
instance
Hash table - Look up objects using a key to get a value.
self

48. Keep view and model objects in sync - control the 'flow' of the application - and save the model objects out to the filesystem
collection of collections - NSArray of an NSArray
the array becomes an owner of that object and has a pointer to it.
instance variables
Controller Objects[Managers]

49. All objects are accessed using...
pointers
@interface ClassName:SuperClassName
you must import the header file of that class
the message release to all its entries

50. UIImageView is used to...
first responder
implementation
Generic object wrapper for other non-object data types
draw images

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iOS 5 App Development Objective C

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