The missing implementation of NSUserDefaultsController for iOS.
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PNDUserDefaultsController.xcodeproj
PNDUserDefaultsController
PNDUserDefaultsControllerTests
LICENSE
PNDUserDefaultsController.podspec
README.md

README.md

PNDUserDefaultsController

PNDUserDefaultsController is a KVO-compatible controller class. Properties of the shared instance of this class can be bound to user interface elements to access and modify values stored in NSUserDefaults.

PNDUserDefaultsController is a class for iOS 4.3 and newer.

Installation

PNDUserDefaultsController can be added to a project using CocoaPods.

Usage

  1. Subclass PNDUserDefaultsController.m
  2. Add properties for each user default you want to model.
  3. Bind properties to user defaults by overriding +propertiesForUserDefaultsKeys.

Example

In XYUserDefaultsController.h:

//
//  XYUserDefaultsController.h
//
//  Created by Pandamonia LLC on 2/15/13.
//  Copyright (c) 2013 Pandamonia LLC. All rights reserved.
//

#import "PNDUserDefaultsController.h"

extern NSString *const XYUserAcceptedTermsOfServiceKey;
extern NSString *const XYUsernameKey;

@interface XYUserDefaultsController : PNDUserDefaultsController

@property (nonatomic) BOOL acceptedTermsOfService;
@property (nonatomic) NSString *username;

@end

In XYUserDefaultsController.m:

//
//  XYUserDefaultsController.m
//
//  Created by Pandamonia LLC on 2/15/13.
//  Copyright (c) 2013 Pandamonia LLC. All rights reserved.
//

#import "XYUserDefaultsController.h"

NSString *const XYUserAcceptedTermsOfServiceKey = @"XYAcceptedTermsOfService";
NSString *const XYUsernameKey = @"XYUsername";

@implementation XYUserDefaultsController

/*

Depending on your version of Xcode, you may need to  include the following variable synthesis:

@synthesize acceptedTermsOfService = _acceptedTermsOfService;
@synthesize username = _username

*/

+ (NSDictionary *)propertiesForUserDefaultsKeys
{
	static NSDictionary *propertiesForUserDefaultsKeys;
	static dispatch_once_t onceToken;
	dispatch_once(&onceToken, ^{
		propertiesForUserDefaultsKeys = @{
			@"acceptedTermsOfService": XYUserAcceptedTermsOfServiceKey,
			@"username": XYUsernameKey
		};
	});
	
	return propertiesForUserDefaultsKeys;
}

@end

License

PNDUserDefaultsController is created and maintained by Pandamonia LLC under the MIT license. The project itself is free for use in any and all projects. You can use PNDUserDefaultsController in any project, public or private, with or without attribution - though we prefer attribution! It helps us.

Unsure about your rights? Read more.