获取调用方法的对象 [英] Get the object which called a method

问题描述

如果我在这样的随机课程中打过电话:

If I have a call from within a random class like this:

@implementation SomeClass

- (void) classMethodFoo
{
    int a = [SomeSingleton sharedInstance].aValue;
}

@end

在SomeSingleton sharedInstance内部，是否有一种方法可以获取对调用此方法的对象的引用(当然，不将调用的传递自身作为参数)?

Inside SomeSingleton sharedInstance, is there a way to get a reference to the object which called this method (without the called passing self as a parameter of course)?

推荐答案

否，有关呼叫者的信息不会自动传递.

No, information about the caller isn't passed along automatically.

这就是为什么例如IBAction方法具有sender参数的原因，以及为什么委托方法经常具有引用委托对象的参数的原因.

This is why IBAction methods, for instance, have a sender parameter, and why delegate methods often have a parameter that refers to the delegate's object.

这篇关于获取调用方法的对象的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！