Question

My question is similar to: iPhone modal view inside another modal view? and Can I push a modal view controller from within another modal view controller?, however there is one difference:

None of my controllers are UINavigationControllers (i think thats what they are called).

So basically I have this:

RootView (variety of options such as submit expense, check calendar, etc) –> submit expense chosen and the following code is called:

EXP = [[ExpensesViewController alloc] initWithNibName:@"ExpensesViewController" bundle:nil];

    [self presentModalViewController:EXP animated:YES];

So now there is one modalview on top of the main view. Then within the expense modal view, I’d like to be able to choose a button that opens a modal view (in similar code)…

I understand from the two questions in my intro above that to do this basically it looks like this:

[controllerA presentModalViewController:Number2 animated:YES];

Could it look like this instead:

[self.view presentModalViewController:Number2 animated:YES];

because I don’t know how to reference the viewcontroller without creating a new instance of it.

Also, when it comes time to dismiss the second one so I can return to the first modal view (basically I open a modalview to submit an expense and then as part of the form, they must select a choice — for UI purposes a new modalview is the best. Once they decide on a choice, they return to the expense view by closing the extra detail modal view, to submit the expense and once they do, then that modal view closes).

So instead of using:

[self dismissModalViewControllerAnimated:YES];

would it be:

[self.view dismissModalViewControllerAnimated:YES];

??

Thanks guys:)

Answer 1

Only UIViewController and subclasses thereof can present modal view controllers. self.view is a UIView instance and something completely different.

In order to save yourself allot of work you should stick to two rules:

1. Only present new modal view controllers from a view controller like so: [self presentModal…];.
2. Only dismiss a modal view controller from the view controller being presented, like so: [self dismiss…];.

This way you have a clear view of the ownership and responsibility of each view controller. Also the method I have seen pretty much everywhere top use [self.super dismiss…]; to dismiss a view controller will break on iOS 5.