IOS. Unable to close view after clicking my Info button (newbie) - ios5

Question

I have found some code for my infoButton which shows up my new credits.xib but I can't manage to come back to my RootViewController.
On my Credits.xib, I have linked my "Done" button with ToucheDown-FirstResponder-ToggleCredits Close.
Here is my code for the infoButton in my RootViewController.m in ViewDidLoad
UIButton *button = [UIButton buttonWithType:UIButtonTypeInfoLight];
[button addTarget:self action:#selector(toggleCreditsOpen:) forControlEvents:UIControlEventTouchUpInside];
UIBarButtonItem *modalButton = [[UIBarButtonItem alloc] initWithCustomView:button];
[self.navigationItem setRightBarButtonItem:modalButton animated:YES];
//[button release];
[modalButton release];
and my code just after my ViewDidLoad
- (IBAction) toggleCreditsOpen:(id)inSender
{
UIViewController *theController = [[UIViewController alloc] initWithNibName:#"Credits" bundle:nil];
[self.navigationController presentModalViewController:theController animated:YES];
}
- (IBAction) toggleCreditsClosed:(id)inSender
{
NSLog(#"Button Pressed!");
//[self.navigationController dismissModalViewControllerAnimated:YES];
[self.parentViewController dismissModalViewControllerAnimated:YES];
}
I think I am missing something should I create a Credits.h and put the toggleCreditsClosed in it ?
Here is the stack trace
*** Terminating app due to uncaught exception 'NSUnknownKeyException', reason: '[<UIViewController 0x7c67610> setValue:forUndefinedKey:]: this class is not key value coding-compliant for the key DoneButton.'
*** First throw call stack:
Here is my Credits.h
#import <UIKit/UIKit.h>
#interface Credits : UIViewController
{
IBOutlet UIButton *DoneButton;
}
#property (nonatomic, retain) UIButton *DoneButton;
#end
and my Credits.m
#import "Credits.h"
#implementation Credits
#synthesize DoneButton;
- (void)viewDidLoad
{
[super viewDidLoad];
}
- (void)viewDidUnload
{
}
- (IBAction) toggleCreditsClosed:(id)inSender
{
NSLog(#"Button Pressed!");
[self dismissModalViewControllerAnimated:YES];
}
#end
If a delete the DoneButton link, the Credits view shows up but I it's when I press the Done button that I have a problem
Costumes[402:11f03] -[UIViewController toggleCreditsClosed:]: unrecognized selector sent to instance 0x7a4c460
2012-10-24 22:19:33.271 Costumes[402:11f03] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIViewController toggleCreditsClosed:]:
Sorry but I don't understand what I have to do and I cannot upload an image to show you but
in Outlets the link is (view<->View) and in Received Actions (toggleCreditsClosed:<->Button-Done Touch Down)

Answer 1

Welcome on SO !
Yes, you should create a separate .h / .m for your Credits. Then tell Inteface Builder that your .xib is a Credits class. Then link your button to this .h with the action you want. Basically, your last method should be in Credits.m :
- (IBAction) toggleCreditsClosed:(id)inSender
{
NSLog(#"Button Pressed!");
[self dismissModalViewControllerAnimated:YES];
}
Watch out, you dismiss the modal view with self instead of self.parentViewController in your code !
(PS : answers you'll get may not always work. Don't hesitate to comment, telling us what (didn't) work !)