iOS 5 App Development Basics

Instructions:

• Answer 50 questions in 15 minutes.
• If you are not ready to take this test, you can study here.
• Match each statement with the correct term.
• Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

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. The ________ class provided a container for the management and display of views
'Interface Builder'
id
UIWindow
Command+0


2. In the US - the '#' symbol is often called the ____ symbol
pound
static
nonatomic
double


3. Property affecting an element's transparency
[myLabel setText:@'Howdy'];
alpha
stub
114 x 114


4. Used to receive an event in code and trigger something
Command+S
Attribute settings for some onscreen controls (like text areas) that analyze content and provide helpful links based on what they find. For example - phone numbers can be touched to dial the phone; web addresses can launch Safari if tapped - etc
static
IBAction


5. Dimensions of iPad (in points)
1024 x 768
Command+S
property list
[[<class name> alloc] init];


6. Syntax to include the fictitious user-created file 'myFile.h'

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7. Expression to create a random number in [0 -20];
onscreen 'widgets' a user can interact with
CGAffineTransform
rand( )%21
class


8. The Inspector you would use to tweak the way interface objects appear
@
h
Attributes Inspector
Disables the Return key on the keyboard unless the user has entered at least a single character of input into the field


9. The 'First Responder' in a scene is not an object it is considered a ________
hasShrunk==YES && hasMoved == YES
retain - release - dealloc - autorelease
%
proxy


10. The Inspector you would access to gain access to various accessibility attributes
Integrated Development Environment
Identity Inspector
<>
NO


11. Write a line of code creating a pointer to a wall paper image called 'wp1' that refers to a resource in an app with the file name 'wallPaper_01.png'

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12. A file folder in the navigator panel is called a ________
NSMutableArray
Group
IBAction
rand( )%21


13. Class used for image manipulations such as scaling - rotation and translation. Its data structure represents a matrix used for affine transformations.
affine
hasShrunk==YES && hasMoved == YES
CGAffineTransform
2


14. Calling a method is the same as...
Hold down the Option key and point to the other label. The distance will be shown
sending an object a message
storyboard
control-dragging


15. NS stands for...
eXtensible Markup Language
NeXSTEP
:
parameter


16. Correct the error: label.text = 'Hello World !';

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17. Formatting placeholder for integers
%d
utility
nested message send
strong


18. In the UK - the '#' symbol is often called the ____ symbol
inspector and library
scene
Xcode
hash


19. An _______ is used to 'advertise' a method in your code that should be called when a certain event takes place
convenience
IBAction
Jump Bar
nonatomic


20. What are the guidelines for the class prefix for a project?

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21. Creates 'getters' and 'setters'
Identity Inspector
57 x 57
@synthesize directive
@


22. Syntax for reserving memory and initializing an object
Outlets ... pointer
pipe
[[<class name> alloc] init];
do not


23. API
eXtensible Markup Language
Application Programming Interface
/*blah blah blah */
[<object variable> <method name>: p1];


24. Boolean for 'false' in Objective-C
NO
C
NSObject
Option+Command+4


25. Defines the functional building blocks (classes) that make iOS devices perform certain actions
Utility apps
m
nil
Cocoa Touch


26. Objective-C is an extension (super set) of...
Cocoa Touch
UITextView
C
mutators


27. Data type for highly precise numbers with huge numbers of decimal places
double
h
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1
Gray circle with a white 'X' in it - positioned to the right of the text field box


28. What type of object does a web view expect as a parameter when loading a remote URL?
NSURLRequest
Disables the Return key on the keyboard unless the user has entered at least a single character of input into the field
Command+1
Double-click


29. A unique combination of view controller and view
Option-click a symbol
UILabel *myLabel = [[UILabel alloc] initWithString:@'GO!'];
double
scene


30. Key sequence to hide/show Utilities View
Option+Command+ 0
pipe
pound
NSObject


31. Any 'directive' statement begins with this symbol
@
image view
NSLog
Touch Up Inside


32. Syntax for sending an object a message with no parameters
@end
57 x 57
Group
[<object variable> <method name>];


33. Templates fill in a bunch of ______-_______ code that serves as a framework in which to write future implementations
+
wrap
boiler-plate
<type> <variableName>;


34. Character used to show an element as a literal string
@
protocols
instance variable
Disables the Return key on the keyboard unless the user has entered at least a single character of input into the field


35. Memory aid for keyboard shortcuts in the Navigator panel

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36. Key sequence to hide/show the Assistant Editor
Isolate the functional components of an app
Command+S
<type> <variableName>;
ption+Command+Return


37. 4 Top down technology layers making up iOS
instantiation
web view
Cocoa Touch - Media - Core Services - Core OS
Gray circle with a white 'X' in it - positioned to the right of the text field box


38. Return type indicating a method returns nothing
-
320 x 480
void
affine


39. iPhone and iPad ____ support .png transparency
/*blah blah blah */
instantiate
do not
label


40. Boolean for 'true' in Objective-C
Attributes Inspector
YES
UITextField
void


41. Development approach (design pattern) to structure iOS applications
Object library
h
Model-View-Controller
subclass


42. Declaring a method in an interface file - before it is actually implemented is called _______ the method
-
NSLog
nested message send
prototyping


43. What computer language is the storyboard written in?
token
XML
C
if(<boolean condition>){/* stuff to do*/} else{ /*stuff to do*/}


44. Shortcut for writing: count = count + 1;
accessible apps
count++;
Application Programming Interface
class


45. Key sequence to save an Xcode file
+
hash
bool
Command+S


46. The HIG requires some kind of _____ element in a cell if there is more information available
<type> <variableName>;
Application Programming Interface
disclosure
Object Library


47. Directive to include other interface files that an application might need to access
512MB
Right-click on it in the Navigator panel and choose 'Open as...' and select 'Source Code'
Option-click a symbol
import


48. IB

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49. Delimiter for a list of protocols
Size Inspector
<>
class
nil


50. This type of app typically involves hierarchical data
productivity
UILabel *myLabel = [[UILabel alloc] initWithString:@'GO!'];
storyboard
variable