objective-c - 获取 NSIncation 消息的发送者

Question

如何获取包含在“NSInvocation”中的消息的发送者？

我在一个对象中，并且我刚刚在我的 forwardInitation: 中收到了一个调用。有什么方法可以知道是谁首先向我发送了该消息吗？

Answer 1

没有。有关发件人的信息不可用(除非您显式添加 sender:self 参数)。

另请参阅此帖子 http://www.cocoabuilder.com/archive/cocoa/194746-is-the-sender-of-an-obj-method-implied-in-the-destination-method.html :

It isn't explicitly available, nor can you consistently unwind the stack to figure it out. Nor is there even a guarantee that the "sender" is really some Objective-C object; it could just as easily be a function or FFI produced closure, in the case of the various language bridges.

b.bum