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  1. POIs parentViewController always a Navigation controller?
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    <p>I was kind of scratching my head at this a week ago, and now with a little bit more Cocoa experience under my belt I feel like I have an inkling as to what might be going on. </p> <p>I'm making an application that is driven by a UINavigationController. In the AppDelegate, I create an instance of this class, using "page 1" as the Root View Controller.</p> <pre><code>UINavigationController *aNavigationController = [[UINavigationController alloc] initWithRootViewController:page1ViewController]; </code></pre> <p>Now here's where I'm having the problem. From "page 1" I'd like to use a modal view controller that slides over the interface and then disappears once the user has made an edit. I do that using code like this, inside of Page1ViewController:</p> <pre><code>[self presentModalViewController:myModalViewController animated:YES]; </code></pre> <p>When the Modal View Controller is gone, I want a value on "Page 1" to change based on what the user entered in the Modal View Controller. So, I wrote some code like this, which resides in the Modal View Controller: </p> <pre><code>[self.parentViewController dismissModalViewControllerAnimated:YES]; [self.parentViewController doSomethingPleaseWithSomeData:someData]; </code></pre> <p>The update to page 1 wasn't happening, and it took me a long time to realize that the "doSomethingPleaseWithSomeData" message was not being sent to Page1ViewController, but the Navigation Controller. </p> <p>Is this always to be expected when using Navigation Controllers? Did I perhaps configure something improperly? Is there an easy way to get at the View Controller that I want (in this case, Page1ViewController).</p>
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