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iOS 6.0 to iOS 6.1 API Differences

Accelerate

No changes

Accounts

No changes

AddressBook

No changes

AddressBookUI

No changes

AdSupport

No changes

AssetsLibrary

No changes

AudioToolbox

No changes

AudioUnit

No changes

AVFoundation

No changes

CFNetwork

No changes

CoreAudio

No changes

CoreBluetooth

No changes

CoreData

No changes

CoreFoundation

No changes

CoreGraphics

No changes

CoreImage

No changes

CoreLocation

No changes

CoreMedia

No changes

CoreMIDI

No changes

CoreMotion

No changes

CoreTelephony

No changes

CoreText

No changes

CoreVideo

No changes

EventKit

No changes

EventKitUI

No changes

ExternalAccessory

No changes

Foundation

No changes

GameKit

No changes

GLKit

No changes

GSS

No changes

iAd

No changes

ImageIO

No changes

IOKit

No changes

MapKit

MediaPlayer

No changes

MediaToolbox

No changes

MessageUI

No changes

MobileCoreServices

No changes

NewsstandKit

No changes

OpenAL

No changes

OpenGLES

No changes

PassKit

No changes

QuartzCore

No changes

QuickLook

No changes

Security

No changes

Social

No changes

StoreKit

No changes

SystemConfiguration

No changes

Twitter

No changes

UIKit

UICollectionViewLayout.h
Declaration
From+ (id)layoutAttributesForSupplementaryViewOfKind:(NSString *)elementKind withIndexPath:(NSIndexPath *)indexPath
To+ (instancetype)layoutAttributesForSupplementaryViewOfKind:(NSString *)elementKind withIndexPath:(NSIndexPath *)indexPath

Declaration
From+ (id)layoutAttributesForDecorationViewOfKind:(NSString *)decorationViewKind withIndexPath:(NSIndexPath *)indexPath
To+ (instancetype)layoutAttributesForDecorationViewOfKind:(NSString *)decorationViewKind withIndexPath:(NSIndexPath *)indexPath

Declaration
From+ (id)layoutAttributesForCellWithIndexPath:(NSIndexPath *)indexPath
To+ (instancetype)layoutAttributesForCellWithIndexPath:(NSIndexPath *)indexPath

UIKitDefines.h
Removed #def instancetype
UINavigationController.h
Declaration
From- (id)initWithNavigationBarClass:(Class)navigationBarClass toolbarClass:(Class)toolbarClass
To- (instancetype)initWithNavigationBarClass:(Class)navigationBarClass toolbarClass:(Class)toolbarClass

VideoToolbox

No changes
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