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  • NSObject的performSelector: withObject: withObject:使用简介

    - (id)performSelector:(SEL)aSelector withObject:(id)anObject withObject:(id)anotherObject

    Description

    [说明]

    Sends a message to the receiver with two objects as arguments. (required)

    [将消息发送到与两个对象作为参数接收。(必填)]

     

    This method is the same as performSelector: except that you can supply two arguments for aSelector. aSelector should identify a method that can take two arguments of type id. For methods with other argument types and return values, use NSInvocation.

    [这种方法是一样的performSelector:除非你能提供两个参数的aSelector。 aSelector应该确定可以采取id类型的两个参数的方法。与其他类型的参数和返回值的方法,使用NSInvocation。]

    Parameters

    [参数]

    aSelector

    A selector identifying the message to send. If aSelector is NULL, an NSInvalidArgumentException is raised.

    [选择器确定要发送的消息。如果aSelector为NULL,一个NSInvalidArgumentException提高。]

    anObject

    An object that is the first argument of the message.

    [一个对象,它是消息的第一个参数。]

    anotherObject

    An object that is the second argument of the message.

    [一个对象,它是消息的第二个参数。]

    Returns

    [返回]

    An object that is the result of the message.

    [一个对象,该对象是消息的结果。]

    Availability

    OS X (10.0 and later)

    Declared In

    NSObject.h

    Reference

    NSObject Protocol Reference

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  • 原文地址:https://www.cnblogs.com/iOSCain/p/4015672.html
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