Question

I want to create a view controller that supports both landscape and portrait orientations, but that can not rotate between them – that is, the view should retain its original orientation.

I have tried creating an ivar initialOrientation and setting it in -viewDidAppear with

initialOrientation = self.interfaceOrientation;

then

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

But that causes confusing problems (presumably because -shouldAutorotateToInterfaceOrientation is called before -viewDidAppear).

How can I lock the orientation to its original orientation?

Answer 1

I was on the right track, I guess. I solved this by making initialOrientation a property, then setting it from the calling viewController:

OrientationLockedViewController *vc = [[OrientationLockedViewController alloc] init];
vc.initialOrientation = self.interfaceOrientation;

Now I have, in OrientationLockedViewController

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return (interfaceOrientation == self.initialOrientation);
}