Question

I have a UIViewController that has an UIPopoverController that has an UINavigationController then a UIViewController. How can I from the child UIViewController call a method (eg. -(void)update) in the parent UIViewController? tried many combinations but still didn’t work.

Answer 1

In your child:

@interface MyChildController:UIViewController {
    MyParentController *parent;
}
@property(nonatomic, assign) MyParentController *parent;
@end
@implementation MyChildController 
@synthesize parent;
...

In your parent controller, when instantiating your child:

MyChildController *newChild = [[[MyChildController alloc] initWithNibName:nil bundle:nil] autorelease];

newChild.parent = self;

...

now in your child you have a ref to your parent that you can use. For instance, some method in your child:

- (IBAction)someAction {
    [self.parent doSomethingParentsDo];
}