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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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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. In the last line of an init method...
super - self
you always return the newly initialized object(return self)
safety - subclassability and makes code look more consistent with C structs
will be ignored

2. In any application with UINavigationController - the navigation controller...
has one root view controller
message
CGRect
UIViewController

3. UIImageView is used to...
instance of UIView or one of its subclasses
draw images
header files declare
size and position

4. How do I implement my drawRect?
Core Graphics Framework
method
create a XIB file
object

5. A _ handles touch events.
methods
NSBundle
view
receiver[message]

6. Reference Counting...
designated initializer
You take ownership for an object you want to keep a pointer to
attributes - behavior
NSBundle

7. Each object does its own job - and presents to the rest of the world - to other objects - and indeed in a sense to the programmer - an opaque wall whose only entrances are the methods to which it promises to respond and the actions it promises to per
lowercase - uppercase
Encapsulation of functionality
accessors - individually we call them 'getters' and 'setters'
@synthesize

8. 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
the instance variables
parentViewController
its dataSource
the array becomes an owner of that object and has a pointer to it.

9. All objects are accessed using...
Model Objects[Factory Worker]
creates an instance of NSString that holds the character string
pointers
in the dealloc - or when a Controller's view is 'unloaded'

10. To get the full path for a directory in the sandbox - you use the _ NSSearchPathForDirectoriesInDomains.
Generic object wrapper for other non-object data types
C Functionn
lowercase - uppercase
unordered collection of objects - objects must be unique

11. Origin of a view's coordinate system is _ left
upper
viewWillDissapear: and viewWillAppear:
arguments[message]
viewWillAppear - viewDidAppear - viewWillDisappear & viewDidDisappear

12. super - is used...
CGRect
for inheritance - adopting the superclasses implementation
C Functionn
%d

13. Proceed through the loop - jump back to the top and check again
declaration and initialization of a variable
collection of collections - NSArray of an NSArray
only the class and subclasses can access
Continue

14. When an object is added to a NSMutableArray - that object is sent the message to retain;...
the array becomes an owner of that object and has a pointer to it.
Data Encapsulation
instance variable of an object is valid
pointer - class

15. Typically the designated initializer has parameters for the most important and frequently used _ of an object
collection of collections - NSArray of an NSArray
@synthesize
method
instance variables

16. When making a tableView always...
array[class - NSMutableArray]
Used to find the time right now or to store past or future time/dates
reuse your cells
Encapsulation of functionality

17. A function in the objective c library that simply displays or logs it's argument
super - self
instance
NSLog routine
only the class and subclasses can access

18. Each class picks one _ as it's designated initializer....
pointers
setPossessionName
to give it someone else - or another object
initializer

19. Just a floating point number - but we always use it for graphics.
initializer
CGFloat
view controller's initialization method
NSLog routine

20. Reducing details to focus on the core concepts
Abstraction
designated initializer
draw images
NSCoder

21. NSDictionary...
superclass's
class
Abstraction
Hash table - Look up objects using a key to get a value.

22. class methods...
UIView
unordered collection of objects - objects must be unique
group of global functions already assigned to this class
NSBundle

23. When do you take ownership?...
Anytime you call a method with new - alloc or copy. You own and must release that object.
size and position
the message release to all its entries
initializers

24. Property List...
nil
method
only the class and subclasses can access
collection of collections - NSArray of an NSArray

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.
retain
C Functionn
data
CGFloat

26. NSString *s = @'Hello - World'; is an example of...
declaration and initialization of a variable
header files declare
in the dealloc - or when a Controller's view is 'unloaded'
the array becomes an owner of that object and has a pointer to it.

27. A view is a subclass of _
arguments[message]
setPossessionName
Generic object wrapper for other non-object data types
UIView

28. The class is responsible for what instance variables the instance has - but not the _ of those variables.
Object wrapper around primitive types like int - float - double - BOOl
Ready-Made Instance
data
values

29. If a break statement is executed from within a set of nested loops...
group of global functions already assigned to this class
accessors - individually we call them 'getters' and 'setters'
only the innermost loop in which the break is executed is terminated
setPossessionName

30. To load a Xib file manually - you use _
retain
declaration and initialization of a variable
the array becomes an owner of that object and has a pointer to it.
NSBundle

31. A collection object - an ordered list of objects that can be accesed by an index
upper
array[class - NSMutableArray]
draw images
callbacks

32. Defining variables - three parts...
arguments[message]
you always return the newly initialized object(return self)
type - name and value
(id)initWithFrame:(CGRect)aRect;

33. 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 _.
class
Continue
nil
pointer - class

34. Each individual instance is a bundle of data that it maintains. Typically that data is private - which means that it's encapsulated as well; no other object knows what that data is or in what form it is kept. The only way to discover from outside wha
Maintenance of state
superclass's
retain
you must import the header file of that class

35. It's class is sent the message alloc - which creates an instance of that class and returns a pointer to it - and then that instance is sent the message init - which gives its instance variables initial values.
references to objects
creating an initializer
position
receiver[message]

36. In a class method you cannot access...
collection of collections - NSArray of an NSArray
references to objects
create a XIB file
the instance variables

37. Only exists within the statement block there defined - outside of the block is fine
variable scope - if defined within a block
Ready-Made Instance
new instances of the class or retrieve some global property of the class.
will be ignored

38. NSString* s2 = [s uppercase String]; Is an example of what kind of instance?
Used to find the time right now or to store past or future time/dates
ready-made instances - instantiation from scratch - and nib based instantiation
count - objectAtIndex - makeObjectsPerformSelector - sortedArrayUsingSelector - lastObject
Ready-Made Instance

39. if you implemented both the setter and getter - the @synthesize method...
accessors - individually we call them 'getters' and 'setters'
Ready-Made Instance
You take ownership for an object you want to keep a pointer to
will be ignored

40. 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
a single-array can contain objects of different types
values
receiver

41. initWithFrame: the designated initializer for UIView gives the view
array[class - NSMutableArray]
to give it someone else - or another object
'getters' and 'setters'
size and position

42. 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.
@synthesize
Hash table - Look up objects using a key to get a value.
Instantiation from scratch
implementation

43. Delegation is an object oriented approach to
to give it someone else - or another object
CGRect
callbacks
the message release to all its entries

44. 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 _.
subview(s)
copy - retain
CF - Ref
they need to be defined in the implementation file

45. At the top of any implementation file...
superclass's
you must import the header file of that class
its dataSource
wait until the loop finishes processing the event - at the end release it

46. Each _ has a 'designated' initializer method....
header files declare
wait until the loop finishes processing the event - at the end release it
class
type - name and value

47. An instance is a device for maintaining state. It's a box for _ of data.
do so in viewDidLoad
its dataSource
instance variables
storage

48. Hold data and know nothing about the user interface
Model Objects[Factory Worker]
instance variables
rectangular
UIViewController

49. Primitives and C Structures...
Is a placeholder object
cannot be added to an array
ready-made instances - instantiation from scratch - and nib based instantiation
Maintenance of state

50. Why properties?
safety - subclassability and makes code look more consistent with C structs
the array becomes an owner of that object and has a pointer to it.
do so in viewDidLoad
Anytime you call a method with new - alloc or copy. You own and must release that object.

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iOS 5 App Development Objective C

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