Question

I have a problem with switching views. I’m using a simulator with xcode 4.2

Storyboard contains:

• NavigationController (initial view controller)
• UIViewController which has relationship with the navigation controller
• UIViewController (paired with my custom class: ViewEntryImageController) which hasn’t got any relationship. Contains a button, a bottom toolbar with some toolbar button.

User come into the UIViewController, where he can see a ScrollView and in ScrollView some images.

Images has a gesture:

    UITapGestureRecognizer *recognizer=[[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(openEntryImage)];
    [image addGestureRecognizer:recognizer];
    [recognizer release];

The openEntryImage function:

(IBAction)openEntryImage
{
    ViewEntryImageController *controller=[[ViewEntryImageController alloc]initWithNibName:nil bundle:nil];
    controller.modalTransitionStyle=UIModalTransitionStyleCrossDissolve;
    [self presentModalViewController:controller animated:YES];
    [controller release];
}

When I try to tap the image, the openEntryImage works as well (the effect is correct), but I don’t see my ViewEntryImageController view and my buttons, I’m only see a black window.

I try to put a NSLog line into the ViewEntryImageController viewDidLoad function, and it works, so what is the black window and where is my view controller?

When I try to use pushViewController, on the new view I found a navigation toolbar with a back button, but no other controls.

I tried another version, I created a UIViewController class, but now with a xib file. I used it instead of ViewEntryImageController and it works. Why?
I want to use this controller in storyboard too.

Answer 1

Try it like this :

ViewEntryImageController *controller=[[ViewEntryImageController alloc]initWithNibName:@"ViewEntryImageController" bundle:nil];

If you don’t use .nib names but rather use storyboards, it’s a bit harder. Create a segue from the controller to the ViewEntryImageController controller by holding ctrl and dragging from one view to the other. Click this segue and give it an identifier.

Then use the [self performSegue:@"identifier"]; function to present the next view.