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

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2. UIView - designated initializer...
Used to find the time right now or to store past or future time/dates
rectangular
UIViewController
(id)initWithFrame:(CGRect)aRect;

3. When making a tableView always...
will be ignored
reuse your cells
you always return the newly initialized object(return self)
callbacks

4. Files Owner...
CF - Ref
Is a placeholder object
data source - view controller and delegate
view controller's initialization method

5. @property - is using methods...
lowercase - uppercase
Maintenance of state
the array relinquishes ownership of that object and no longer has a pointer to it
to get and set variables

6. 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
a mechanism to enable specific callbacks
instance of UIView or one of its subclasses
is called every time the event occurs
message

7. When overriding a method - all you need to is _ - you do not need to declare it in the header file because it has already been declared by the superclass....
define it in the implemenation file
storage
accessors - individually we call them 'getters' and 'setters'
implementation

8. NSString* s2 = [s uppercase String]; Is an example of what kind of instance?
receiver - selector - arguments
ordered collection of objects - immutable
methods for generating an instance
Ready-Made Instance

9. A callback is a function that is supplied in advance of an event - and...
define it in the implemenation file
is called every time the event occurs
the array relinquishes ownership of that object and no longer has a pointer to it
alloc - singleton - informational utility method?

10. Also - because arrays only hold a pointer to an object...
do so in viewDidLoad
a single-array can contain objects of different types
methods for generating an instance
is an instance of that class

11. Reference Counting...
You take ownership for an object you want to keep a pointer to
Controller Objects[Managers]
only the innermost loop in which the break is executed is terminated
implementation

12. All objects are accessed using...
pointers
nil
size and position
Hash table - Look up objects using a key to get a value.

13. A responder is responsible for...
Data Encapsulation
create a XIB file
receiving and handling events that are associated with it
the array becomes an owner of that object and has a pointer to it.

14. Whenever a UINavigationController is about to swap views - it sends out two messages
receiving and handling events that are associated with it
Continue
viewWillDissapear: and viewWillAppear:
Model Objects[Factory Worker]

15. Origin of a view's coordinate system is _ left
upper
Controller Objects[Managers]
superclass's
the array becomes an owner of that object and has a pointer to it.

16. id is a...
references to objects
pointer to an object
ordered collection of objects - immutable
message

17. Dynamic binding means that when we call a certain object's method - and there are several _ of that method - the right one is figured out at runtime.
implementation
calling code that does the instantiation for you
a mechanism to enable specific callbacks
you always return the newly initialized object(return self)

18. What happens when the last owner calls release?

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19. A set of variables and associated methods. An object can be sent messages to cause one of its methods to be executed.
array[class - NSMutableArray]
object
@interface ClassName:SuperClassName
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear

20. In any application with UINavigationController - the navigation controller...
has one root view controller
data source - delegate and view controller
@interface ClassName:SuperClassName
accessors - individually we call them 'getters' and 'setters'

21. The only reason to temporarily own an object - is...
for inheritance - adopting the superclasses implementation
to give it someone else - or another object
collection of collections - NSArray of an NSArray
attributes - behavior

22. When an NSMutableArray is deallocated - it sends...
alloc - singleton - informational utility method?
the message release to all its entries
Ready-Made Instance
data source - delegate and view controller

23. A view is a subclass of _
delegates and dataSources
Data Encapsulation
UIView
creating an initializer

24. Name of the method to be executed
message
selector[message]
count - objectAtIndex - makeObjectsPerformSelector - sortedArrayUsingSelector - lastObject
collection of collections - NSArray of an NSArray

25. Prefixing a character string with an @ symbol [specific - NSString class]...
creates an instance of NSString that holds the character string
instance variable of an object is valid
nil
callbacks

26. Instance Variables by default are called @protected meaning...
Hash table - Look up objects using a key to get a value.
first responder
they need to be defined in the implementation file
only the class and subclasses can access

27. If you have extra work you want to do on the view...
CGRect bounds - GCPoint center - CGRect frame
cannot be added to an array
Instantiation from scratch
do so in viewDidLoad

28. Execution of the break statement...
causes the program to immediately exit from the loop it is executing - whether its for - while or do
CGFloat
superclass's
parentViewController

29. Objective C only allows for single inheritance - so in regards to class you only ever see the following pattern
view controller
@interface ClassName:SuperClassName
for inheritance - adopting the superclasses implementation
wait until the loop finishes processing the event - at the end release it

30. Name of the new class - it's superclass - the instance variables that each instance of this class has - and any methods this class implements
Continue
they need to be defined in the implementation file
header files declare
count - objectAtIndex - makeObjectsPerformSelector - sortedArrayUsingSelector - lastObject

31. If a class declares a _ that is different from its superclass - you must override the superclass' _ to call the new _...
the array becomes an owner of that object and has a pointer to it.
header files declare
Core Graphics Framework
designated initializer

32. A view represents a _ area
unordered collection of objects - objects must be unique
setPossessionName
rectangular
implementation

33. Each _ has a 'designated' initializer method....
class
an object's property
for inheritance - adopting the superclasses implementation
data source - view controller and delegate

34. Keep view and model objects in sync - control the 'flow' of the application - and save the model objects out to the filesystem
data source - delegate and view controller
upper
the instance variables
Controller Objects[Managers]

35. When an object is removed from an NSMutableArray - that object is sent the message release;...
to get and set variables
the array relinquishes ownership of that object and no longer has a pointer to it
Instantiation from scratch
CGFloat

36. Object Oriented based analogue to a function is called a...
method
@synthesize
data source - view controller and delegate
for inheritance - adopting the superclasses implementation

37. A function in the objective c library that simply displays or logs it's argument
CGRect bounds
ready-made instances - instantiation from scratch - and nib based instantiation
pointers
NSLog routine

38. Just a floating point number - but we always use it for graphics.
message
data
CGFloat
cannot be added to an array

39. You use _ to implement the view
is an instance of that class
CGRect bounds
selector[message]
type - name and value

40. 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 _.
UIViewController
alloc - singleton - informational utility method?
reuse your cells
pointer - class

41. NSArray - class...
has one root view controller
you must import the header file of that class
ordered collection of objects - immutable
Encapsulation of functionality

42. initWithFrame: the designated initializer for UIView gives the view
size and position
variable scope - if defined within a block
Controller Objects[Managers]
you always return the newly initialized object(return self)

43. Classes describe two things...
new instances of the class or retrieve some global property of the class.
alloc - singleton - informational utility method?
attributes - behavior
to give it someone else - or another object

44. Any individual object belonging to any class...
draw images
dealloc - is called on the object & the object's memory is returned to the heap
you always return the newly initialized object(return self)
is an instance of that class

45. The designated initializer calls the _ designated initializer....

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46. The root view controller typically creates the next view controller - and the next _ creates the one after that
view controller
ready-made instances - instantiation from scratch - and nib based instantiation
you always return the newly initialized object(return self)
@interface ClassName:SuperClassName

47. Use of class methods - there are three...
alloc - singleton - informational utility method?
you always return the newly initialized object(return self)
only the class and subclasses can access
instance variables

48. 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...
setPossessionName
implementation
has one root view controller
to get and set variables

49. [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.
data
ordered collection of objects - immutable
Generic object wrapper for other non-object data types
@synthesize

50. A _ handles touch events.
the array becomes an owner of that object and has a pointer to it.
NSLog routine
view
self

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iOS 5 App Development Objective C

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