IOS Notes Runtime API

December 21, 2023

by Justin Gibbons

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1.`objc_xxx`A series of function

Objc_getClass gets the Class object

Objc_getMetaClass gets the MetaClass object

Objc_allocateClassPair allocates space and creates classes (member variables can only be added after creation but before registration)

Objc_registerClassPair Registers a class (you can use that class to create objects)

Objc_disposeClassPair unregisters a class

Objc_allocateProtocol Specifies the space creation protocol

Objc_registerProtocol Registers a protocol

Objc_constructInstance Constructs an instance object (invalid under ARC)

Objc_destructInstance DestructInstance destructInstance object (not valid under ARC)

Objc_setAssociatedObject associates an object with an instance object

Objc_getAssociatedObject Gets the associated object of the instance object

Objc_removeAssociatedObjects clears all associated objects of the instance object

The objc_xxx family of functions focuses on macro usage, such as class and protocol space allocation, registration, logout, and other operations

2.`class_xxx`A series of function

Class_addIvar adds an instance variable to the class

Class_addProperty Adds attributes to the class

Class_addMethod adds a method to a class

Class_addProtocol is the class compliance protocol

Class_replaceMethod replaces the implementation of a method of a class

Class_getName Gets the class name

Class_isMetaClass Determines whether it is a metaclass

Objc_getProtocol Gets a protocol

Objc_copyProtocolList Copies the list of protocols registered at runtime

Class_getSuperclass Gets the parent class of a class

Class_setSuperclass Sets the parent class of a class

Class_getProperty Gets a property of a class

Class_getInstanceVariable gets the instance variable

Class_getClassVariable Gets a class variable

Class_getInstanceMethod Method of obtaining an instance

Class_getClassMethod Gets the class method

An implementation of the class_getMethodImplementation method

Class_getInstanceSize Gets the size of the instance of the class

Class_respondsToSelector Determines whether a class implements a method

Class_conformsToProtocol Determines whether a class complies with a protocol

Class_createInstance Creates an instance of the class

Class_copyIvarList List of instance variables for copying a class

Class_copyMethodList The list of methods used to copy a class

Class_copyProtocolList List of protocols followed by copy classes

Class_copyPropertyList Property list of the copy class

The class_xxx family of functions focuses on the internals of a class, such as instance variables, attributes, methods, protocols, and other related issues

3.`object_xxx`A series of function

Object_copy Object copy(ARC invalid)

Dispose object_Dispose object (ARC invalid)

Object_getClassName Gets the class name of the object

Object_getClass Gets the Class of the object

Object_setClass Sets the Class of the object

Object_getIvar gets the value of the instance variable in the object

Object_setIvar Sets the value of the instance variable in the object

Object_getInstanceVariable Retrieves the value of an instance variable in an object (not available in ARC, using object_getIvar)

Object_setInstanceVariable Sets the value of an instance variable in an object (not available in ARC, using object_setIvar)

The object_xxx family of functions focuses on the object perspective, such as instance variables

4.`method_xxx`A series of function

Method_getName Gets the method name

Implementation of the method_getImplementation method

Method_getTypeEncoding Gets the type encoding of the method

Method_getNumberOfArguments Gets the number of method arguments

Method_copyReturnType The return type of the copied method

Method_getReturnType Gets the return type of the method

Method_copyArgumentType Indicates the parameter types of copied methods

Method_getArgumentType Gets the parameter type of the method

Method_getDescription Gets the description of the method

Implementation of the method_setImplementation setting method

Method_exchangeImplementations Implementation of the replacement method

The method_xxx family of functions focuses on the inside of a method, the parameters and return value types of the method, and the implementation of the method

5.`property_xxx`A series of function

Property_getName Gets the property name

Property_getAttributes Gets the property list of the property

Property_copyAttributeList List of copied attributes

Property_copyAttributeValue Value of a property in a copy property

Property_xxx is a class function that looks inside a property, such as its properties

6.`protocol_xxx`A series of function

Protocol_conformsToProtocol Determines whether a protocol complies with another protocol

Protocol_isEqual Checks whether two protocols are consistent

Protocol_getName Indicates the protocol name

Protocol_copyPropertyList Indicates the property list of a copy protocol

Protocol_copyProtocolList List of protocols followed by a protocol

Protocol_copyMethodDescriptionList copy the list of methods of the agreement

Protocol_addProtocol Indicates that one protocol complies with another

Protocol_addProperty Adds an attribute to a protocol

Protocol_getProperty Indicates an attribute of a protocol

Protocol_addMethodDescription Adds a method description to a protocol

Protocol_getMethodDescription Gets the description of a method in a protocol

7.`ivar_xxx`A series of function

Ivar_getName Obtains the Ivar name

Ivar_getTypeEncoding Gets the type encoding

Ivar_getOffset Gets the offset

8.`sel_xxx`A series of function

Sel_getName Gets the name

Sel_getUid Registration method

Sel_registerName Registration method

Sel_isEqual Determines whether methods are equal

9.`imp_xxx`A series of function

Imp_implementationWithBlock Creates imPs from code blocks

Imp_getBlock gets the code block in the function pointer

Imp_removeBlock Removes code blocks from IMP