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iPhone - UIViewController not rotating when device orientation changes

Asked 2009-01-11T11:51:50.103
14

I have got my own custom UIViewController, which contains a UIScrollView with an UIImageView as it's subview. I would like to make the image to auto rotate when device orientation changes, but it doesn't seem to be working...

In the header file, I've got;

@interface MyViewController : UIViewController <UIScrollViewDelegate> {
    IBOutlet UIScrollView   *containerView;
    UIImageView *imageView;
}

These components are initialised in the loadView function as below;

    containerView = [[UIScrollView alloc] initWithFrame:frame];

    NSData *data = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://..."]];
    UIImage *image = [[UIImage alloc] initWithData:data];
    imageView = [[UIImageView alloc] initWithImage:image];
    [image release];

    [containerView addSubview:imageView];

And I have added the following method, assuming that's all I need to make the view auto-rotate...

-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return YES;
}

MyViewController loads fine with the image I've specified to grab from the URL, and the shouldAutorotate... function is being called, with the correct UIInterfaceOrientation, when I flip the device too.

However, didRotateFromInterfaceOrientation method do not get called, and the image doesn't seem to rotate itself... Could someone please point out what I need to add, or what I have done wrong here?

Thanks in advance!

iphone cocoa-touch
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1 Answer

1

This is discussed in Apple Technical Q&A QA1688.

Sometimes if you stack multiple views on top of each other for some reason, the anotherController might not receive rotation event.

[myWindow addSubview:primaryViewController.view];
[myWindow addSubview:anotherController.view];

A lazy way (not a good design) to fix this is only add one subview on window, but initialize multiple controller on the app delegate. Then when you need to switch window, remove the current view and add the view you want

[self.view removeFromSuperview];
AppDelegate *dg = (AppDelegate *)[[UIApplication sharedApplication] delegate];
[[dg window] addSubview:[[dg viewController] view]];
answered 2011-01-27T19:57:10.813

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