Question

I add a viewcontroller using

[self presentModalViewController:vectorView animated:YES];

But then from within would like to call a method inside the parent viewcontroller.

I read this question and found that something like this could be done to set a variable in the parent:

self.parentViewController.myString = aString;

But is there a way to call a method and send a few variables through that way?

For example

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

Answer 1

It’s no different from any other message you would send:

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

Note that the behavior of the parentViewController property has changed in iOS 5:

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.