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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. NSSet...
unordered collection of objects - objects must be unique
type - name and value
receiver - selector - arguments
you always return the newly initialized object(return self)

2. Why properties?
you always return the newly initialized object(return self)
message
for inheritance - adopting the superclasses implementation
safety - subclassability and makes code look more consistent with C structs

3. Each class picks one _ as it's designated initializer....
selector[message]
initializer
ready-made instances - instantiation from scratch - and nib based instantiation
collection of collections - NSArray of an NSArray

4. After accessors have been defined in the header file...
a single-array can contain objects of different types
to get and set variables
they need to be defined in the implementation file
a mechanism to enable specific callbacks

5. Files Owner...
you always return the newly initialized object(return self)
Is a placeholder object
alloc - singleton - informational utility method?
pointer to an object

6. NSDictionary...
do so in viewDidLoad
Instantiation from scratch
Hash table - Look up objects using a key to get a value.
upper

7. How do I implement my drawRect?
Core Graphics Framework
instance
Anytime you call a method with new - alloc or copy. You own and must release that object.
Instantiation from scratch

8. The notion that the data for an object is stored in it's instance variables and is accessed only by the objects methods. This maintains the integrity of the data.
Data Encapsulation
the array becomes an owner of that object and has a pointer to it.
viewWillDissapear: and viewWillAppear:
class methods - initializers

9. initWithFrame: the designated initializer for UIView gives the view
methods for generating an instance
references to objects
size and position
do so in viewDidLoad

10. Typically the designated initializer has parameters for the most important and frequently used _ of an object
the array relinquishes ownership of that object and no longer has a pointer to it
instance variables
message
arguments[message]

11. Core foundation classes are prefixed with _ and suffixed with _
protocol
dealloc - is called on the object & the object's memory is returned to the heap
CF - Ref
setPossessionName

12. class methods...
pointer - class
UIView
group of global functions already assigned to this class
safety - subclassability and makes code look more consistent with C structs

13. Reducing details to focus on the core concepts
position
do so in viewDidLoad
Abstraction
initializer

14. When do we need to release our outlets?

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15. In general - in Objective-C - a reference to an instance is a _ - and the name of the data type of what's at the far end of that pointer is the name of the instances's _.
pointer - class
you always return the newly initialized object(return self)
the instance variables
upper

16. In Objective C arrays can hold only...
dealloc - is called on the object & the object's memory is returned to the heap
safety - subclassability and makes code look more consistent with C structs
references to objects
setPossessionName

17. Archiving works by creating an instance of _ - which is essentially just a container for data - and placing objects and their data inside it.
method
NSCoder
do so in viewDidLoad
CGRect

18. Execution of the break statement...
causes the program to immediately exit from the loop it is executing - whether its for - while or do
define it in the implemenation file
receiver - selector - arguments
Used to find the time right now or to store past or future time/dates

19. id is a...
(id)initWithFrame:(CGRect)aRect;
Ready-Made Instance
delegates and dataSources
pointer to an object

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

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21. Number one use of protocols in iOS...
delegates and dataSources
data source - delegate and view controller
(id)initWithFrame:(CGRect)aRect;
the message release to all its entries

22. UIViewController has several methods that get called at certain times...
causes the program to immediately exit from the loop it is executing - whether its for - while or do
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear
CGFloat
Instantiation from scratch

23. 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
header files declare
parentViewController
collection of collections - NSArray of an NSArray
CF - Ref

24. SomeClass* aVariable = [[SomeClass alloc] init]; is an example of what kind of instance?
selector[message]
Instantiation from scratch
group of global functions already assigned to this class
is an instance of that class

25. [Instance Variables] The code it gets from its class and in a sense is shared with all other instances of that class - but the _ belong to it alone.
designated initializer
data
pointer to an object
has one root view controller

26. A view exists within a hierarchy. The window (an instance of UIWindow) is a view and the root of the hierarchy. It has _ (that appear on the window). Those views can also have _.
copy - retain
the array becomes an owner of that object and has a pointer to it.
message
subview(s)

27. Order of the declarations for methods. _ come first - followed by _ - followed by any other methods...
superclass's
class methods - initializers
nil
Maintenance of state

28. A UITableViewController can fill all three roles of...
data source - view controller and delegate
references to objects
methods
you always return the newly initialized object(return self)

29. You use _ to implement the view
CGRect bounds
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear
CGRect
super - self

30. Inside a method - _ is an implicit local variable. Typically - _ is used so that an object can send a message to itself....
self
@synthesize
superclass's
to give it someone else - or another object

31. To get the full path for a directory in the sandbox - you use the _ NSSearchPathForDirectoriesInDomains.
C Functionn
creating an initializer
safety - subclassability and makes code look more consistent with C structs
CGRect

32. Origin of a view's coordinate system is _ left
its dataSource
upper
Object wrapper around primitive types like int - float - double - BOOl
for inheritance - adopting the superclasses implementation

33. Delegation is an object oriented approach to
position
object
callbacks
receiver[message]

34. A delegate is a pointer to an object with a set of methods the delegate-holder knows how to call. In other words - it's _ from a later created object
selector[message]
a mechanism to enable specific callbacks
type - name and value
data source - view controller and delegate

35. A _ handles touch events.
the message release to all its entries
NSLog routine
implementation
view

36. In Objective C - the name of a setter method is set plus the name of the instance variable it is changing - for example PossessionName would be...
rectangular
NSBundle
is called every time the event occurs
setPossessionName

37. What happens when the last owner calls release?

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38. Keep view and model objects in sync - control the 'flow' of the application - and save the model objects out to the filesystem
Controller Objects[Managers]
subview(s)
instance of UIView or one of its subclasses
superclass's

39. NSString* s2 = [s uppercase String]; Is an example of what kind of instance?
Ready-Made Instance
view controller
has one root view controller
NSBundle

40. When you send a message to _ - you are sending a message to _ - but demanding that the search for the method begin at the superclass....
super - self
view
data source - view controller and delegate
lowercase - uppercase

41. A view is a subclass of _
alloc - singleton - informational utility method?
Used to find the time right now or to store past or future time/dates
UIView
creates an instance of NSString that holds the character string

42. A set of variables and associated methods. An object can be sent messages to cause one of its methods to be executed.
rectangular
creating an initializer
instance variables
object

43. The class is responsible for what instance variables the instance has - but not the _ of those variables.
self
array[class - NSMutableArray]
C Functionn
values

44. NSString *s = @'Hello - World'; is an example of...
setPossessionName
declaration and initialization of a variable
message
protocol

45. A UITableView usually needs three different pieces...
data source - delegate and view controller
receiver
is called every time the event occurs
creates an instance of NSString that holds the character string

46. Name of the method to be executed
CF - Ref
parentViewController
selector[message]
the message release to all its entries

47. A message is always contained in square brackets - and has three parts
pointer to an object
receiver - selector - arguments
for inheritance - adopting the superclasses implementation
view controller's initialization method

48. A collection object - an ordered list of objects that can be accesed by an index
ready-made instances - instantiation from scratch - and nib based instantiation
array[class - NSMutableArray]
instance
receiver[message]

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

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50. UIImageView is used to...
data source - view controller and delegate
the instance variables
wait until the loop finishes processing the event - at the end release it
draw images

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iOS 5 App Development Objective C

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