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. Shortcut for writing: y = y * 5;
IBOutlet
mutators
bgImages = [[NSArray alloc] initWithObjects: wp1 - wp2 - wp3 - wp4 - wp5 - nil];
y *= 5;


2. Apps written to assist users with special disabilities
accessible apps
==
int
xcodeproj


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

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4. If you wish to 'echo print' breadcrumb info as you develop your app - this panel must be visible
nil
114 x 114
utility
The Console area of the Debug area


5. Define a collection of methods to perform a task
protocols
Cocoa is the development framework used for most native Mac OS X applications; Cocoa Touch is customized for a touch interface
Nib (but a few call it 'zib' but that's not preferred)
nil


6. Way to refer to an object within its own methods
scene
Commmand-R
self
Human Interface Guide


7. Data type for highly precise numbers with huge numbers of decimal places
double
image view
XML
%1.2f


8. Multiline text entry block
static
self
UITextView
implicitly declare a matching instance variable


9. Purpose of 'Secure' attribute for text fields
Right-click on it in the Navigator panel and choose 'Open as...' and select 'Source Code'
Treats the field as a password - hiding each character as it is typed
m
#import 'myFile.h'


10. Data type for numbers with 'tame' numbers of decimal points
Utility apps
main()
above
float


11. Syntax for declaring a string called 'userName'
NSString *userName;
Attributes Inspector
protocols
UIImageView


12. An alternative way to see the connections between an object in the Interface Builder and it's code in Xcode without using the Connections inspector

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13. Proper way to pronounce a *.xib file

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14. An integrated web browser component
web view
%
instantiation
Something unique - based on the app's name (perhaps abbreviated). Avoid 'NS' or 'UI' since they are used in Apple's frameworks. A framework or library should always be prefixed. For a simple app - they are not necessary.


15. A tool in Xcode to help fix broken code
debugger
attributes
below
implicitly declare a matching instance variable


16. Class that creates an array capable of being changed after it is create
Outlets ... pointer
IBAction
NSMutableArray
Human Interface Guide


17. Property affecting an element's transparency
below
alpha
com.basicversity
Outlets ... pointer


18. IDE for iPhone Development
nonatomic
Xcode
parameter
storyboards


19. Alternative selection mechanism when many conditions exist
NSObject
switch
bgImages = [[NSArray alloc] initWithObjects: wp1 - wp2 - wp3 - wp4 - wp5 - nil];
productivity


20. For a text field - what does the 'Clear Button' look like?

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21. File name suffix indicating an image is suitable for retina display
casting
@2x
Option+Command+4
Integrated Development Environment


22. A virtual 'box' for organizing related projects
workspace
NSMutableString
@synthesize
h


23. The files that contain all the scenes you will use in a project.
Option+Command+4
nested message send
storyboards
instance variable


24. strong and nonatomic are examples of ...
[shrinkButton setTitle:@'Grow' forState: UIControlStateNormal];
attributes
float
xcodeproj


25. Templates fill in a bunch of ______-_______ code that serves as a framework in which to write future implementations
!=
boiler-plate
Touch Up Inside
@synthesize


26. Key sequence to open the Project Navigator (left panel)
mutators
nil
Command+1
hasShrunk==YES && hasMoved == YES


27. A unique combination of view controller and view
UIApplication
Identity Inspector
interface file
scene


28. Formatting placeholder for strings
%@
UIWindow
Determine how controls resize/reposition themselves when a device changes orientation
@synthesize


29. Syntax for reserving memory and initializing an object
[[<class name> alloc] init];
!
hash
performance


30. Method used to print information in an output panel
<type> <variableName>;
proxy
NSLog
void


31. Class used for creating image views
protocols
UIImageView
Command+1
Command+R


32. Boolean for 'true' in Objective-C
graduationParty ... addAttendee:withDish
instantiate
YES
Object-oriented programming


33. Beginning with iOS4 - applications no longer terminate when the user presses the...
Home button
UIWindow
Send the 'resignFirstResponder' message to the object that currently controls the keyboard (such as a text field)
productivity


34. What computer language is the storyboard written in?
label
contentSize
while(<boolean expression>){/*stuff to do here*/}
XML


35. Purpose of the 'Auto-enable Return Key' attribute for text fields
UILabel *myLabel = [[UILabel alloc] initWithString:@'GO!'];
Disables the Return key on the keyboard unless the user has entered at least a single character of input into the field
First Responder
while(<boolean expression>){/*stuff to do here*/}


36. The 'First Responder' in a scene is not an object it is considered a ________
<type> <variableName>;
%
proxy
detail disclosure


37. Attribute that informs Xcode not to worry about different parts of the application using a property at the same time
Single View Application
nonatomic
Snapshot feature
NSDictionary


38. What event do you use to detect a button tap?
wrap
Touch Up Inside
x--;
||


39. In the UK - the '#' symbol is often called the ____ symbol
rand( )%21
hash
IBOutlet
UIImageView


40. Expression to create a random number in [0 -20];
main()
accessible apps
rand( )%21
do not


41. A fully opaque image has an _______ property value of ______
for(<initialization>;<test condition>;<update instruction>){/*do this over and over*/}
alpha ... 1
modal views
Identity Inspector


42. Shortcut for writing: x = x - 1;
Treats the field as a password - hiding each character as it is typed
%d
x--;
Gray circle with a white 'X' in it - positioned to the right of the text field box


43. Key sequence to hide/show the Assistant Editor
modal views
XML
ption+Command+Return
NSLog(@'%s' - __FUNCTION__);


44. A transition between scenes - frequently with a visual transition effect applied
view
do not
segue
affine


45. How do you show a storyboard file as source code?

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46. MVC
Model-View-Controller
model
png
import


47. Single line text field
debugger
UITextField
instantiate
controller


48. What do the Autosizing settings of the Size Inspector do?
Look at the three icons at the upper left portion of the Debug console. The far left one - 'Show only the Variables View' will not show the NSLog-ed information. Click the center icon ('Show the Variables View and the Console') or the right icon ('Sh
utility
Determine how controls resize/reposition themselves when a device changes orientation
parameter


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

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50. The '@' symbol is shorthand for creating one of these
Double-click
productivity
NSString
Object Library