How to change the device orientation programmatica

Question

In iOS 5 we could change the device orientation programmatically like so:

[[UIDevice currentDevice] setOrientation:UIInterfaceOrientationLandscapeRight];

But in iOS 6 setOrientation is deprecated, how may i change the device orientation programmatically in iOS 6?

Answer 1

@implementation UINavigationController (autorotate)

 -(NSUInteger)supportedInterfaceOrientations
 {
   //make the check for iphone/ipad here

    if(IPHONE)
    {
      return UIInterfaceOrientationMaskPortrait;
    } 
    else
    {
      return UIInterfaceOrientationMaskLandscape;
    }
 }

 - (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
 {
    return UIInterfaceOrientationPortrait;
 }

 - (BOOL)shouldAutorotate
 {
    return NO;
 }

Answer 2

Here are my "five cents", tested on iOS7 with ARC

[[UIDevice currentDevice] setValue:
                      [NSNumber numberWithInteger: UIInterfaceOrientationPortrait]
                            forKey:@"orientation"];

This doesnt generate "leak" warning as performSelector will.

UIAlertView - with this code, when you open UIAlertView during view(will/Did)appear you will notice that all but this view is in portrait (apple, really?) I wasn't able to force the view to reorient but found that if you put slight delay before opening the UIAlertView then view has time to change orientation.

Note I'm releasing my app week commencing 12/09/2014 and I will update post if it will pass or fail.

Answer 3

Try this...It worked out for me...

UIWindow *window = [[UIApplication sharedApplication] keyWindow];
UIView *view = [window.subviews objectAtIndex:0];
[view removeFromSuperview]; [window addSubview:view];

Answer 4

This code is for iOS 8 or later

NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationLandscapeLeft];
[[UIDevice currentDevice] setValue:value forKey:@"orientation"];

Answer 5

This works for iOS7, force autorotate to portrait.

//In your viewController.m
#import <objc/message.h>

// for autorotate viewController to portraid
- (void)viewWillAppear:(BOOL)animated {
    UIInterfaceOrientation orientationStatusBar =[[UIApplication sharedApplication] statusBarOrientation];
    switch (orientationStatusBar) {
        case UIInterfaceOrientationPortrait:break;
        case UIInterfaceOrientationLandscapeLeft:
            objc_msgSend([UIDevice currentDevice], @selector(setOrientation:), UIInterfaceOrientationPortrait);
            break;
        case UIInterfaceOrientationLandscapeRight:
            objc_msgSend([UIDevice currentDevice], @selector(setOrientation:), UIInterfaceOrientationPortrait);
            break;
        default:
            break;
    }
}

// this permit autorotate
- (BOOL) shouldAutorotate
{
   // this lines permit rotate if viewController is not portrait
    UIInterfaceOrientation orientationStatusBar =[[UIApplication sharedApplication] statusBarOrientation];
    if (orientationStatusBar != UIInterfaceOrientationPortrait) {
        return YES;
    }
    //this line not permit rotate is the viewController is portrait
    return NO;
}

NOTE: I implemented this option in my app, but probably would get rejected by Apple (comment for Austin for edited 6 of Sergey K. in oct 2012).

Answer 6

Apple made changing the device orientation programmatically in ios6 quite difficult (on purpose mind you).

As far as I know the only way to accomplish what you're asking is to simulate the change of device orientation.

Using setTransform to rotate the UIView and re-applying its own frame gives the desired results.

[YourView setTransform:CGAffineTransformMakeRotation(1.57)];
[YourView setFrame:CGRectMake(0, 0, YourView.frame.size.width, YourView.frame.size.height)];

And when the device physical orientation changes we can undo the transformation.

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
    [YourView setTransform:CGAffineTransformMakeRotation(0)];
    [YourView setFrame:CGRectMake(0, 0, YourView.frame.size.width, YourView.frame.size.height)];
}