Referencing UIViewController in NSObject

I am trying to access UIViewController's view in a NSObject class. The NSObject class is suppose to programmatically change UIViewController's user interface. I tried accessing NSViewController's view in NSObject by using self.view but was told that "request for member 'view' in something not a structure or union.

After a few inquiries, I was told that I need to reference viewController开发者_运维百科 in my NSObject class. I am unsure of how to do this and would appreciate any help or point in the right direction. Thanks!

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You should give the NSObject class a property called myController or something in its interface declaration, or pass a ViewController* to any methods that need to access it.

For the property, you can say:

ViewController* myController;

in the NSObject sub-class interface declaration, or for the method way, add an argument to your NSObject sub-class' method:

- (void) someMethodThatTakesAViewController: (ViewController*) theViewController {
    //Do your stuff here
    theViewController.view = [[UIView alloc] init]; // Or whatever you want to do
} 

Hope this was what you were looking for.