iOS 基础类解析 - NSObject

iOS 基础类解析 - NSObject

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NSObject Class Reference

Inherits from	none (NSObject is a root class)
Conforms to	NSObject
Framework	/System/Library/Frameworks/ Foundation.framework
Availability	Available in iOS 2.0 and later.
Declared in	NSKeyedArchiver.h NSObject.h NSRunLoop.h NSThread.h objc/NSObject.h
Related sample code	AdvancedURLConnections AVPlayerDemo CryptoExercise PhotosByLocation TheElements

Initializing a Class

• + initialize
• + load

Creating, Copying, and Deallocating Objects

• + alloc
• + allocWithZone:
• – init
• – copy
• + copyWithZone:
• – mutableCopy
• + mutableCopyWithZone:
• – dealloc
• + new

Identifying Classes

• + class
• + superclass
• + isSubclassOfClass:

Testing Class Functionality

• + instancesRespondToSelector:

Testing Protocol Conformance

• + conformsToProtocol:

Obtaining Information About Methods

• – methodForSelector:
• + instanceMethodForSelector:
• + instanceMethodSignatureForSelector:
• – methodSignatureForSelector:

Describing Objects

• + description

Discardable Content Proxy Support

• – autoContentAccessingProxy

Sending Messages

• – performSelector:withObject:afterDelay:
• – performSelector:withObject:afterDelay:inModes:
• – performSelectorOnMainThread:withObject:waitUntilDone:
• – performSelectorOnMainThread:withObject:waitUntilDone:modes:
• – performSelector:onThread:withObject:waitUntilDone:
• – performSelector:onThread:withObject:waitUntilDone:modes:
• – performSelectorInBackground:withObject:
• + cancelPreviousPerformRequestsWithTarget:
• + cancelPreviousPerformRequestsWithTarget:selector:object:

Forwarding Messages

• – forwardingTargetForSelector:
• – forwardInvocation:

Dynamically Resolving Methods

• + resolveClassMethod:
• + resolveInstanceMethod:

Error Handling

• – doesNotRecognizeSelector:

Archiving

• – awakeAfterUsingCoder:
• – classForCoder
• – classForKeyedArchiver
• + classFallbacksForKeyedArchiver
• + classForKeyedUnarchiver
• – replacementObjectForCoder:
• – replacementObjectForKeyedArchiver:
• + setVersion:
• + version

Deprecated Methods

• – finalize

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