从代码中调用IBAction的最好方法是什么？

问题描述

例如，我有一个 IBAction ，它在界面生成器中连接到 UIButton 。

   - （IBAction）functionToBeCalled：（id）sender 
 {
 // do something here 
 
} 
  

在我的代码中，是调用 IBAction 的最佳方法？

如果我尝试像这样调用，我会收到一个错误：

  [self functionToBeCalled：]; 
  

但是，如果我试图像这样调用罚款：

  [self functionToBeCalled：0]; 
  

正确调用它的正确方法是什么？

解决方案

正确的方式是：

   -  [self functionToBeCalled：nil ] 
  

传递nil发件人，表示它没有通过通常的框架调用。 p>

或

   -  [self functionToBeCalled： self] 
  

将自己作为发件人，这也是正确的。

要选择哪一个取决于函数究竟是什么，以及它期望发送者是什么。

Say for instance I have an IBAction that is hooked up to a UIButton in interface builder.

- (IBAction)functionToBeCalled:(id)sender
{
   // do something here

}

With-in my code, say for instance in another method, what is the best way to call that IBAction?

If I try to call it like this, I receive an error:

[self functionToBeCalled:];

But, if I try to call it like this (cheating a bit, I think), it works fine:

[self functionToBeCalled:0];

What is the proper way to call it properly?

解决方案

The proper way is either:

- [self functionToBeCalled:nil]

To pass a nil sender, indicating that it wasn't called through the usual framework.

OR

- [self functionToBeCalled:self]

To pass yourself as the sender, which is also correct.

Which one to chose depends on what exactly the function does, and what it expects the sender to be.

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