Test your basic knowledge |

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. If you have an image file called 'myImage.png' and you make a hi-res version for the retina display - what should be the name of the new file?
myImage@2x.png
User Interface
nonatomic
320 x 480

2. RAM for iPhone
512MB
affine
interface and implementation files
#import <UIKIT/UIKIT.h>

3. Define a collection of methods to perform a task
Cocoa Touch
protocols
Treats the field as a password - hiding each character as it is typed
self

4. What property needs to be set before a scroll view (UIScrollView) will scroll?
Commmand-R
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1
contentSize
Attributes Inspector

5. Boolean for 'false' in Objective-C
attributes
segue
immersive
NO

6. Symbol often denoting a 'pointer'
Treats the field as a password - hiding each character as it is typed
disclosure
casting
*

7. Denotes a class method
/*blah blah blah */
below
utility
+

8. A fully transparent image has an _____ property value of _____
alpha ... 0
nonatomic
Attributes Inspector
Isolate the functional components of an app

9. An example of a common collection data type
Human Interface Guide
Touch Up Inside
conform
NSArray

10. IDE for iPhone Development
2
Xcode
h
utility

11. Modulus (remainder) operator
bool
%
First Responder
nil

12. Write a statement to declare and initialize a label object called 'myLabel'
alpha
C
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
UILabel *myLabel = [[UILabel alloc] init];

13. Single line text field
ommand+Return
UITextField
hash
web view

14. 4 Top down technology layers making up iOS
NSString *phrase = @'Hello World';
modal
Cocoa Touch - Media - Core Services - Core OS
model

15. Name of the drop-down menu in Xcode that lets you select the device used with the iOS Simulator
Scheme
label
@synthesize
main()

16. Class of collection data type which stores information as object/key pairs
h
NSDictionary
Group
Integrated Development Environment

17. Indicates a lack of any value at all
Objective-C
nil
eXtensible Markup Language
Group

18. Syntax to include UIKIT in a class
Control-click on the View Controller's icon to bring up a Connections dialog
320 x 480
#import <UIKIT/UIKIT.h>
import

19. Dimensions of iPhone (in points)
hash
320 x 480
Object-oriented programming
Command+0

20. Memory aid for keyboard shortcuts in the Navigator panel

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21. Character used to show an element as a literal string
@
interface file
pipe
Command+R

22. Which Apple project template creates a simple view/view controller application
Double-click
UILabel *myLabel = [[UILabel alloc] init];
Single View Application
'Software Development Kit'

23. Size of iPhone 'lo-res' icon image in pixels
57 x 57
NSDate
NSLog(@'%s' - __FUNCTION__);
[<object variable> <method name>];

24. iPhone and iPad ____ support .png transparency
do not
ption+Command+Return
prototyping
onscreen 'widgets' a user can interact with

25. Defines the functional building blocks (classes) that make iOS devices perform certain actions
+
114 x 114
instance variable
Cocoa Touch

26. Syntax for sending an object a message with no parameters
retain
[<object variable> <method name>];
graduationParty ... addAttendee:withDish
xcodeproj

27. Tests to see whether two values are equal
proxy
==
[[<class name> alloc] init];
void

28. A common button type that indicates additional information is available
storyboard
accessible apps
2
detail disclosure

29. Document Apple uses to evaluate apps for the App Store
Human Interface Guide
&&
IBAction)moveMe:(id)sender;
#import 'myFile.h'

30. XML
parameter
eXtensible Markup Language
UILabel *myLabel = [[UILabel alloc] initWithString:@'GO!'];
NSLog

31. A unique combination of view controller and view
alpha ... 0
storyboards
scene
myImage@2x.png

32. Two-way selection logic block
Cocoa Touch
%@
<>
if(<boolean condition>){/* stuff to do*/} else{ /*stuff to do*/}

33. How do you get rid of an onscreen keyboard?

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34. A ______ is where you edit a view and assign a controller to it.
Scheme
Size Inspector
scene
parameter

35. A virtual 'box' for organizing related projects
sending an object a message
ommand+Return
workspace
nonatomic

36. To zoom between an overview of the entire storyboard and the actual size view - ______ the storyboard background.
Touch Up Inside
Double-click
Treats the field as a password - hiding each character as it is typed
Command+S

37. Templates fill in a bunch of ______-_______ code that serves as a framework in which to write future implementations
To provide a convenient way of setting the button's title in the code
Option-click a symbol
boiler-plate
Command+S

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

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39. Formatting placeholder for a floating point value with one digit on the left of the decimal and two digits on the right
label.text=@'Hello World!';
Determine how controls resize/reposition themselves when a device changes orientation
%1.2f
Nib (but a few call it 'zib' but that's not preferred)

40. Combining two messages into a single line of code
Command+1
Object library
self
nested message send

41. Under what circumstances would you need an outlet for a button if it's just needed to trigger an action?

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42. Size of iPhone retina icon image in pixels
114 x 114
view controller
[myLabel setText:@'Howdy'];
||

43. An integrated web browser component
@synthesize
The Console area of the Debug area
web view
1024 x 768

44. Syntax for sending an object a message with one parameter (p1)
320 x 480
[<object variable> <method name>: p1];
nonatomic
accessible apps

45. What computer language is the storyboard written in?
@synthesize directive
XML
Command plus the navigator's position in the selector. For example - the project navigator shortcut is Command-1
alpha ... 1

46. Another name for format specification
token
UIViewController
accessors
Cocoa Touch

47. Development approach (design pattern) to structure iOS applications
wrap
User Interface
Model-View-Controller
eXtensible Markup Language

48. Key sequence to hide/show Navigator View
@synthesize
YES
Command+0
alpha ... 1

49. Prior to ARC - you used these terms alot
debugger
superclass
retain - release - dealloc - autorelease
scene

50. Used to display image file resources and show simple animations
int
Application Programming Interface
NO
image view