Dismiss ViewController from TableViewController

Question

I have presented the viewController which contains a navigation controller whose view is loaded from another nib with the UITableView in it. I would like to dismiss that presented viewController from the UITableViewController. I have tried every combination of self.parentViewController and self.navigationController and self.navigationController.parentViewController but I am still not able to dismiss it. How and what is the best way for it to be dismissed?

Answer 1

I have never gotten self.navigationController.parentViewController to work as advertised, but this does work for me:

NSArray *viewControllerArray = [self.navigationController viewControllers];
int parentViewControllerIndex = [viewControllerArray count] - 2;
[[viewControllerArray objectAtIndex:parentViewControllerIndex] myParentViewMethod:arg1 withArg2:arg2 ...];

Answer 2

Is this not working?

[myViewController presentModalViewController:otherController animated:YES];
// ...
[myViewController dismissModalViewControllerAnimated:YES];

Answer 3

It sounds like you've painted yourself into a corner a bit with your hierarchy, but that's ok I think we can fix it. There the two "usual" ways of doing this are:

1. From controller A, present controller B, from B do work, from B dismiss, return to A
2. From controller A, present controller B, from B do work, raise event via delegate protocol to A, from A dismiss B which returns control to A

In your current situation, this may require an uncomfortable ammount of refactoring, in which case it may be easier to just expose a handle to the other controller as a property, just make sure it's a weak reference like so:

@interface ControllerB : UIViewController
{
  ControllerA* controllerA;
}

@property (readwrite, nonatomic, assign) ControllerA* controllerA; // weak reference

@end

Or however you like, the point is to scope the variable properly so that it's available when you need it.

Answer 4

I just ended up using delegates to dismiss the parent.