Is there a documented way to set the iPhone orientation?

Question

I have an app where I would like to support device rotation in certain views but other don't particularly make sense in Landscape mode, so as I swapping the views out I would like to force the rotation to be set to portrait.

There is an undocumented property setter on UIDevice that does the trick but obviously generates a compiler warning and could disappear with a future revision of the SDK.

[[UIDevice currentDevice] setOrientation:UIInterfaceOrientationPortrait]; 

Are there any documented ways to force the orientation?

Update: I thought I would provide an example as I am not looking for shouldAutorotateToInterfaceOrientation as I have already implemented that.

I want my app to support landscape and portrait in View 1 but only portrait in View 2. I have already implemented shouldAutorotateToInterfaceOrientation for all views but if the user is in landscape mode in View 1 and then switches to View 2, I want to force the phone to rotate back to Portrait.

Answer 1

This is long after the fact, but just in case anybody comes along who isn't using a navigation controller and/or doesn't wish to use undocumented methods:

UIViewController *c = [[UIViewController alloc]init]; [self presentModalViewController:c animated:NO]; [self dismissModalViewControllerAnimated:NO]; [c release]; 

It is sufficient to present and dismiss a vanilla view controller.

Obviously you'll still need to confirm or deny the orientation in your override of shouldAutorotateToInterfaceOrientation. But this will cause shouldAutorotate... to be called again by the system.

Answer 2

If you want to force it to rotate from portrait to landscape here is the code. Just note that you need adjust the center of your view. I noticed that mine didn't place the view in the right place. Otherwise, it worked perfectly. Thanks for the tip.

if(UIInterfaceOrientationIsLandscape(self.interfaceOrientation)){          [UIView beginAnimations:@"View Flip" context:nil];         [UIView setAnimationDuration:0.5f];         [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];          self.view.transform = CGAffineTransformIdentity;         self.view.transform = CGAffineTransformMakeRotation(degreesToRadian(90));         self.view.bounds = CGRectMake(0.0f, 0.0f, 480.0f, 320.0f);         self.view.center = CGPointMake(160.0f, 240.0f);          [UIView commitAnimations]; }