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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. Each _ has a 'designated' initializer method....
creating an initializer
You take ownership for an object you want to keep a pointer to
Is a placeholder object
class

2. UITableViewController is a subclass of...
header files declare
UIViewController
UIView
create a XIB file

3. Any individual object belonging to any class...
Ready-Made Instance
is an instance of that class
only the class and subclasses can access
implementation

4. [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.
Object wrapper around primitive types like int - float - double - BOOl
message
create a XIB file
data

5. Only exists within the statement block there defined - outside of the block is fine
method
receiver[message]
%d
variable scope - if defined within a block

6. Prefixing a character string with an @ symbol [specific - NSString class]...
creates an instance of NSString that holds the character string
position
accessors - individually we call them 'getters' and 'setters'
instance variable of an object is valid

7. If you have extra work you want to do on the view...
do so in viewDidLoad
self
instance variables
they need to be defined in the implementation file

8. Order of the declarations for methods. _ come first - followed by _ - followed by any other methods...
protocol
callbacks
Controller Objects[Managers]
class methods - initializers

9. super - is used...
draw images
type - name and value
for inheritance - adopting the superclasses implementation
the array becomes an owner of that object and has a pointer to it.

10. 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
receiver - selector - arguments
(id)initWithFrame:(CGRect)aRect;
causes the program to immediately exit from the loop it is executing - whether its for - while or do

11. You use _ to implement the view
copy - retain
superclass's
Generic object wrapper for other non-object data types
CGRect bounds

12. Ready-made instances...
size and position
C Functionn
receiver - selector - arguments
calling code that does the instantiation for you

13. Center and frame are used to _ your view
variable scope - if defined within a block
receiving and handling events that are associated with it
data source - view controller and delegate
position

14. What happens when the last owner calls release?

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15. A UITableView usually needs three different pieces...
pointers
data source - delegate and view controller
is called every time the event occurs
Data Encapsulation

16. Asking a class or object to execute a method
You take ownership for an object you want to keep a pointer to
calling code that does the instantiation for you
Hash table - Look up objects using a key to get a value.
message

17. 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...
UIView
UIViewController
group of global functions already assigned to this class
setPossessionName

18. To get the full path for a directory in the sandbox - you use the _ NSSearchPathForDirectoriesInDomains.
ordered collection of objects - immutable
C Functionn
parentViewController
references to objects

19. Property List...
wait until the loop finishes processing the event - at the end release it
only the class and subclasses can access
collection of collections - NSArray of an NSArray
draw images

20. C struct with a CGPoint origin and a CGSize size - in other words two c structs.
viewWillDissapear: and viewWillAppear:
Functions
super - self
CGRect

21. A block of statements identified by a name that can accept one or more arguments passed to it by value and can optionally return a value
Functions
parentViewController
@synthesize
creating an initializer

22. Views have three properties related to their location and size: @property _ _;
CGRect bounds - GCPoint center - CGRect frame
type - name and value
array[class - NSMutableArray]
reuse your cells

23. How do I implement my drawRect?
(id)initWithFrame:(CGRect)aRect;
super - self
ready-made instances - instantiation from scratch - and nib based instantiation
Core Graphics Framework

24. When the message endEditing: is sent to a view - if it or any of its subviews or currently the _ - it will resign its first responder statues - and the keyboard will be dismissed.
message
superclass's
first responder
its dataSource

25. 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.
super - self
safety - subclassability and makes code look more consistent with C structs
instance of UIView or one of its subclasses
implementation

26. What does autorelease mean?
to give it someone else - or another object
view controller's initialization method
the array becomes an owner of that object and has a pointer to it.
wait until the loop finishes processing the event - at the end release it

27. NSValue - class...
initializers
data
Generic object wrapper for other non-object data types
count - objectAtIndex - makeObjectsPerformSelector - sortedArrayUsingSelector - lastObject

28. Delegation is an object oriented approach to
callbacks
accessors - individually we call them 'getters' and 'setters'
new instances of the class or retrieve some global property of the class.
Generic object wrapper for other non-object data types

29. NSString* s2 = [s uppercase String]; Is an example of what kind of instance?
Ready-Made Instance
callbacks
instance variables
CGRect bounds

30. Object Oriented based analogue to a function is called a...
instance variable of an object is valid
method
Is a placeholder object
Instantiation from scratch

31. Classes describe two things...
view controller's initialization method
attributes - behavior
CGRect
pointers

32. If a break statement is executed from within a set of nested loops...
CGFloat
only the innermost loop in which the break is executed is terminated
view controller's initialization method
group of global functions already assigned to this class

33. When you send a message to _ - you are sending a message to _ - but demanding that the search for the method begin at the superclass....
You take ownership for an object you want to keep a pointer to
setPossessionName
super - self
CF - Ref

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

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35. Number one use of protocols in iOS...
array[class - NSMutableArray]
upper
the array relinquishes ownership of that object and no longer has a pointer to it
delegates and dataSources

36. At the top of any implementation file...
do so in viewDidLoad
values
parentViewController
you must import the header file of that class

37. If the view has no subviews - create it programmatically; if it has subviews
create a XIB file
references to objects
receiver
pointer to an object

38. NSDate - class...
array[class - NSMutableArray]
to give it someone else - or another object
Used to find the time right now or to store past or future time/dates
accessors - individually we call them 'getters' and 'setters'

39. Class methods do not operate on an _ or have any access to _ variables....
Instantiation from scratch
instance
callbacks
upper

40. A UITableViewController can fill all three roles of...
data source - view controller and delegate
group of global functions already assigned to this class
references to objects
unordered collection of objects - objects must be unique

41. A collection object - an ordered list of objects that can be accesed by an index
creates an instance of NSString that holds the character string
Abstraction
array[class - NSMutableArray]
message

42. When an object is removed from an NSMutableArray - that object is sent the message release;...
the array relinquishes ownership of that object and no longer has a pointer to it
Anytime you call a method with new - alloc or copy. You own and must release that object.
super - self
they need to be defined in the implementation file

43. 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.
instance of UIView or one of its subclasses
Data Encapsulation
class methods - initializers
nil

44. When an object is added to a NSMutableArray - that object is sent the message to retain;...
for inheritance - adopting the superclasses implementation
the array becomes an owner of that object and has a pointer to it.
array[class - NSMutableArray]
Object wrapper around primitive types like int - float - double - BOOl

45. In general - class methods tend to be factory methods - that is...
instance of UIView or one of its subclasses
declaration and initialization of a variable
methods for generating an instance
creates an instance of NSString that holds the character string

46. NSString objects are usually sent _ rather than _...
copy - retain
Encapsulation of functionality
nil
NSBundle

47. initWithFrame: the designated initializer for UIView gives the view
Maintenance of state
%d
size and position
to give it someone else - or another object

48. 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
Instantiation from scratch
CGFloat
CGRect bounds
a mechanism to enable specific callbacks

49. When making a tableView always...
will be ignored
reuse your cells
first responder
instance variables

50. Variable names tend to start with a _ letter; class names tend to start with an _ letter.
superclass's
wait until the loop finishes processing the event - at the end release it
lowercase - uppercase
data

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iOS 5 App Development Objective C

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