iphone - 从 modalViewController 中调用父类中的方法

Question

我添加一个 View Controller 使用

[self presentModalViewController:vectorView animated:YES];

但随后想从内部调用父 View Controller 中的方法。

我读了this问题，发现可以做这样的事情来在父级中设置一个变量:

self.parentViewController.myString = aString;

但是有没有办法调用方法并通过这种方式发送一些变量？

例如

self.parentViewController.myMethod; //Which does not work

Answer 1

这与您发送的任何其他消息没有什么不同:

[self.parentViewController myMethod:param1 withParam:param2];

请注意 parentViewController 属性的行为在 iOS 5 中发生了变化:

Prior to iOS 5.0, if a view did not have a parent view controller and was being presented modally, the view controller that was presenting it would be returned. This is no longer the case. You can get the presenting view controller using the presentingViewController property.