A navigation controller is not something that you can expect to be always there. It has to be created first - ether in code or in interface builder. The flip isn't managed by a navigation controller. The main view controller is simply presenting modal view controller (every UIViewController can do this).
You can "wrap" your Flipside controller in a navigation controller to get the
desired effect. I suggest you take a look at the UINavigationController class
documentation to see what it's all about.
In the main controller change the part where you present the flipside view
controller (showInfo by default) to someting like:
FlipsideViewController *controller = [[FlipsideViewController alloc]
initWithNibName:@"FlipsideView" bundle:nil];
controller.delegate = self;
UINavigationController *navController = [[UINavigationController alloc]
initWithRootViewController:controller];
[controller release];
navController.modalTransitionStyle =
UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:navController animated:YES];
[navController release];
Regards,
Matej Bukovinski
On 17.5.2010, at 19:07, Alejandro Marcos Aragón wrote:
> Hi Matej,
>
> Thanks for your answer. I checked what you said and indeed the pointer is
> null. What I don't understand, is how this application doesn't have a
> UINavigationController. How am I switching between the front and back view if
> there isn't a navigation controller? I used the code you suggested and it
> works, but that is not what I want. What I want is the default behavior for a
> UITableView: when the user clicks on a row, a new view slides from the right,
> and then when the user clicks back, we're back in the view that contains the
> UITableView.
>
> If I were to create the UINavigationController, where should I do this? In
> the MainViewController.h? In the FlipsideViewController.h?
>
> Thanks again for the help,
>
> aa
>
> On May 16, 2010, at 6:19 PM, Matej Bukovinski wrote:
>
>> Hi Alejandro,
>>
>> I don't see that you create a UINavigationController in your code and since
>> the unity application template doesn't already provide one I assume
>> self.navigationController in your code is nil. Check with the debugger to
>> make sure.
>>
>> If you're after a standard flip effect I suggest presenting a modal view
>> controller:
>>
>> dvController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
>> [self presentModalViewController:dvController animated:YES];
>>
>> Regards,
>> Matej Bukovinski
>>
>>
>
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