nnLib

===

This project is just a folder of common functions used in a few different iOS projects.

Some notable classes include

Graphics

nnScrollingCGView

This is a subclass of UIScrollView which manages its own drawing during scrolling rather than using the pixel replication/filtering of the built in class. It is suitable for charts and other graphics rendered with the CGContext functions.

nnSceneObject (& friends)

A set of classes which can be used to create a scene hierarchy to render in an nnScrollingCGView.

nnDV

A set of classes which implement an easy way to add UI elements and manage thier storage.

nnDVStoreProtocol

This is a protocol which a storage manager must implement. It includes functions such as setBool:forKey:, boolForKey:, etc. Each UI element is attached to a store protocol.

nnPreferenceManager

Implements nnDVStoreProtocol using NSUserDefaults. So nnDV UI elements bound to this preference manager get stored in that manner.

nnDVBoolUISwitch

Is an example nnDV UI element, A subclass of UISwitch which implements nnDVUIBaseProtocol, it can be placed in IB and then setup in for example viewDidLoad.

  [boolSwitchOne setupDvInfo: @"SwitchOne" handler: preferenceManager delegate:nil];

This will setup boolSwitchOne to automatically bind to the NSUserDefaults for the key @"SwitchOne" whenever the user clicks the switch. In viewWillAppear you just need.

  [boolSwitchOne populate];

To have the switch show the current saved state of @"SwitchOne". In order to save the value use

  [boolSwitchOne save];

Other data types work similarly. You can use any object for the key so that its also easy to make a manager which uses a CoreData backend rather than NSUserDefaults. As long as it implements nnDVStoreProtocol everything will work the same.

Other UIElements

Some other elements include nnDVBoolUICheckbox, nnDVSliderTableViewCell, and nnDVStringUIText. Check the sources.

Core Data Stuff

nnLib contains several Core Data helper classes. Here's a few

nnCoreDataManager

Basically just a wrapper for NSManagedObjectContext, NSManagedObjectModel, and managedObjectModel. It includes some simple helper functions such as:

// Create a new object in the context
-(id) newObject: (NSString*) entityName;

// Delete the specified object	
-(void)deleteObject: (id)objectToDelete;

// Save the context
-(NSError*)saveContext;

There is also a simple search function

// Search the context for the first occurance of the object
-(id)findObject:(NSString*)entityName 
	withPredicate: (NSPredicate*)predicate 
	andSort:(NSArray*)sortDescriptors;

nnCoreDataAppDelegate

A base class for AppDelegates which includes a nnCoreDataManager.

nnCoreDataTableViewController

Wraps up most of the work you need to create a table view controller using CoreData

Password Store

nnPasswordStore

Audio

nnShortSound

Lets you play a simple sound resource (like an .aiff file). It has two methods

-(id)initWithSoundName:(NSString*)name;
-(void)playSound;

bricetebbs / nnIOSlib