Whose view is not in window hierarchy issue - iphone

Question

I've set up a navController, which appears after tapping a button. However, if I tap the button I get the error of: "Warning: Attempt to present <UINavigationController>: 0xab5d9d0 on <MyApp: 0xadaa320> whose view is not in the window hierarchy!"
Does anyone know how to solve this? I also tried something on Stackoverflow but it wasn't my solution.
Here my code for opening the navigationcontroller:
I dont know if somebody know this photogallery but if you don't, here is the project.
My code (MyApp.m):
#import MyApp.h
...
//some stuff
- (void)launchGalleryView
{
MWPhotoBrowser *browser = [[MWPhotoBrowser alloc] initWithDelegate:self];
// Set browser options.
browser.wantsFullScreenLayout = YES;
browser.displayActionButton = NO;
UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:browser];
NSMutableArray *photos = [[NSMutableArray alloc] init];
MWPhoto *photo;
photo = [MWPhoto photoWithFilePath:[[NSBundle mainBundle] pathForResource:#"callculator" ofType:#"jpg"]];
photo.caption = #"The calculator is soo beateful...";
[photos addObject:photo];
self.photos = photos;
[self presentModalViewController:navController animated:NO];
}
Thanks in advance.
Edit:
it is in the recources and in the compile sources but in the resources you can see that it is red (the storyboard). Maybe it's caused by this?
The Second controller .h:
#class MyApp;
#interface Second : UIViewController <MWPhotoBrowserDelegate> {
}
#property (nonatomic, retain) MyApp* vC;
#end
The Secnond controller .m:
#import "Second.h"
#import "MyApp.h"
#interface Second ()
#end
#implementation Second
#synthesize vC;
//some stuff in here
//the action
- (IBAction)dothis:(id)sender {
NSLog(#"launch the navcontroller");
[self.vC launchGalleryView];
}
MyApp.h:
#import "Second.h"
#interface myApp : UIViewController <MWPhotoBrowserDelegate> {
}
-(void)launchGalleryView;
NSArray *_photos;
NEW EDIT:
I found that I have to call the method "launchGalleryView" in the viewDidAppear but how can I do this without calling the navcontroller everytime the view loads? Does anyone know how to do this?

Answer 1

i checked your project.. wasn't able to sort out the proper issue..
but i tried a hack and it worked..
replace this line with
[self presentModalViewController:navController animated:YES];
this
[[[[[UIApplication sharedApplication] delegate] window] rootViewController] presentModalViewController:navController animated:YES];