How to set device (UI) orientation programmatically?

Question

Would like everything on the screen (UI) to be able to rotate from landscape left to right or vica versa.

How do I go about doing this? Is this private?

I

Answer 1

If you present a modal view controller which implements -shouldAutorotateToInterfaceOrientation: to only support one orientation, the whole interface will automatically be forced into it. I don't think there's a way to programmatically change orientation otherwise.

Answer 2

This was addressed by: Guntis Treulands https://stackoverflow.com/a/10146270/894671

//-----------------------------------
// FORCE PORTRAIT CODE
//-----------------------------------
[[UIApplication sharedApplication] setStatusBarOrientation:UIDeviceOrientationPortrait animated:NO];
//present/dismiss viewcontroller in order to activate rotating.
UIViewController *mVC = [[UIViewController alloc] init];
[self presentModalViewController:mVC animated:NO];
[self dismissModalViewControllerAnimated:NO];

Answer 3

if ([[UIDevice currentDevice] respondsToSelector:@selector(setOrientation:)]) {
        objc_msgSend([UIDevice currentDevice], @selector(setOrientation:),    UIInterfaceOrientationLandscapeLeft );
    }

Answer 4

As suggested on a related thread shouldAutorotateToInterfaceOrientation is deprecated. Newer apps should leverage the following methods as described in Apple's UIViewController Class Reference until they themselves become deprecated:

• shouldAutorotate,
• preferredInterfaceOrientationForPresentation; and
• attemptRotationToDeviceOrientation.

From what I understand it's best to use different View Controllers for views which need to lock into (i.e. have a preferred) orientation mode which differs from the last.