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 wou

Answer 1

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];
}

Answer 2

I found a solution and wrote something in french (but code are in english). here

The way is to add the controller to the window view (the controller must possess a good implementation of the shouldRotate.... function).

Answer 3

iOS 6 solution:

[[[self window] rootViewController] presentViewController:[[UIViewController alloc] init] animated:NO completion:^{
    [[[self window] rootViewController] dismissViewControllerAnimated:NO completion:nil];
}];

The exact code depends per app and also where you place it (I used it in my AppDelegate). Replace [[self window] rootViewController] with what you use. I was using a UITabBarController.

Answer 4

I don't think this is possible to do at run-time, though you could of course just apply a 90 degree transform to your UI.

Answer 5

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 6

There is a simple way to programmatically force iPhone to the necessary orientation - using two of already provided answers by kdbdallas, Josh :

//will rotate status bar
[[UIApplication sharedApplication] setStatusBarOrientation:UIInterfaceOrientationLandscapeRight];


//will re-rotate view according to statusbar
UIViewController *c = [[UIViewController alloc]init];
[self presentModalViewController:c animated:NO];
[self dismissModalViewControllerAnimated:NO];
[c release];

works like a charm :)

EDIT:

for iOS 6 I need to add this function: (works on modal viewcontroller)

- (NSUInteger)supportedInterfaceOrientations
{
    return (UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight);
}