超过2个对象的performSelector [英] performSelector with more than 2 objects

问题描述

有没有一种方法可以调用[anObject performSelector]；有两个以上的物体?我知道您可以使用数组来传递多个参数，但是我想知道是否存在一种较低层的方法来调用已经定义了2个以上参数的函数，而不使用带有nsarray参数的辅助函数.

Is there a way to call [anObject performSelector]; with more than 2 objects? I know you can use an array to pass multiple arguments, but I was wondering if there was a lower level way to call a function I already have defined with more that 2 arguments without using a helper function with an nsarray of arguments.

推荐答案

任一(1)使用

Either (1) Use an NSInvocation or (2) directly use objc_msgSend.

objc_msgSend(target, @selector(action:::), arg1, arg2, arg3);

(注意:确保所有参数都是id的，否则参数可能无法正确发送.)

(Note: make sure all arguments are id's, otherwise the arguments might not be sent correctly.)

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