iphone - On orientation change of iphone , rotate only one control and not all others

Question

I'm having UIImageView, few lables, buttons etc in a view. Currently I have implementation for portrait mode. When orientation of iphone is changed, I just want to rotate only image view. Rest all other controls should not change. How can I implement the rotation of only image view?

Answer 1

I had to do something very similar recently. What I did was disable auto rotation and then used the device notifications like this:

[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didRotate:) name:UIDeviceOrientationDidChangeNotification object:nil];

- (void)didRotate:(NSNotification *)notification {  
    UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];
    switch (orientation) {
        case UIDeviceOrientationUnknown:
        case UIDeviceOrientationFaceUp:
        case UIDeviceOrientationFaceDown:
            return;
            break;
    }

    // Do something
}

You will need to handle some situations like quick rotations etc. Let me know if you need more info.