This question already has answers here:
Force landscape mode in one ViewController using Swift
(20 answers)
Closed 1 year ago.
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?
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.
I found out that the easiest way to force the device to change orientation is to present a new view controller (using presentViewController:animated:completion:) where the new view controller specified a particular preferred orientation (by implementing the method -(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation).
When a new view controller is presented, as expected, the orientation will change to the one preferred by the new view controller. So, simplest implementation (best practice?) will be to embed all functionality you needed in a specific orientation into a separate view controller, and present it as needed. The system will take care of changing the orientation for you.
Obviously this might not suit all use cases, but, fortunately the same trick is applicable to force the device to change orientation for existing view controller.
The trick is to present a new view controller with the specific preferred orientation that you needed, and then hide it immediately. This will cause the orientation to change temporary when the new view controller is presented. The best part is, when the new view controller is dismissed, the original (presenting) view controller's preferredInterfaceOrientationForPresentation is queried again, you can specify the final orientation you want here.
One important thing to look out here is to also temporary disable auto rotation in the original view controller (when coming back from the newly presented-then-dismissed view controller), so that when user rotate their phone towards the new orientation, it does not triggered further auto rotation.
The following code should illustrate my point, my example forces rotation to portrait, just change accordingly if you want other orientation.
Assuming you have the original view controller named Original, and a temporary view controller named ForcePortrait
#interface Original : UIViewController
{
BOOL orientationToPortrait; //should set to NO by default
}
#end
#implementation Original
- (UIInterfaceOrientation) preferredInterfaceOrientationForPresentation
{
if(orientationToPortrait)
{
//when we manually changed, show in Portrait
return UIInterfaceOrientationPortrait;
}
else
{
//before manual orientation change, we allow any orientation
return self.interfaceOrientation;
}
}
-(BOOL) shouldAutorotate
{
//we should 'lock' the rotation once we manually change it
return !orientationToPortrait;
}
-(void) changeOrientationToPortrait
{
//Sample method to change the orientation
//when called, will show (and hide) the temporary view
//Original.preferredInterfaceOrientationForPresentation will be called again after this method
//flag this to ensure that we tell system we prefer Portrait, whenever it asked again
orientationToPortrait = YES;
//presenting the following VC will cause the orientation to temporary change
//when the new VC is dismissed, system will ask what is our (Original) orientation preference again
ForcePortrait* forcePortrait = [[ForcePortrait alloc] init];
[self presentViewController:forcePortrait animated:NO completion:^{
[forcePortrait dismissViewControllerAnimated:NO completion:nil];
}];
}
#end
#interface ForcePortrait : UIViewController
#end
#implementation ForcePortrait
- (NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskPortrait;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation
{
return UIInterfaceOrientationPortrait;
}
#end
This does not answer how to change the device Orientation, but an additional information that might help you.
iOS 6 UI Interface Orientation - shouldAutorotateToInterfaceOrientation: Not Working
The method shouldAutorotateToInterfaceOrientation: is NOT supported in iOS 6. Its deprecated. Just in case if you are a newbie, who just stared working in cocoa, and wondering why is your view controller messed up in iOS 6 and perfect in iOS 5, just know that shouldAutorotateToInterfaceOrientation: is not supported anymore. Even though it may work well with Xcode 4 to 4.3 it will NOT work on Xcode 4.5.
Apple provides a new method to get this thing done, in a much cleaner fashion. You use supportedInterfaceOrientations instead. It returns all of the interface orientations that the view controller supports, a mask of interface orientation values.
UIInterfaceOrientationMask Enum:
These constants are mask bits for specifying a view controller’s supported interface orientations.
typedef enum {
UIInterfaceOrientationMaskPortrait = (1 << UIInterfaceOrientationPortrait),
UIInterfaceOrientationMaskLandscapeLeft = (1 << UIInterfaceOrientationLandscapeLeft),
UIInterfaceOrientationMaskLandscapeRight = (1 << UIInterfaceOrientationLandscapeRight),
UIInterfaceOrientationMaskPortraitUpsideDown = (1 << UIInterfaceOrientationPortraitUpsideDown),
UIInterfaceOrientationMaskLandscape =
(UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight),
UIInterfaceOrientationMaskAll =
(UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft |
UIInterfaceOrientationMaskLandscapeRight | UIInterfaceOrientationMaskPortraitUpsideDown),
UIInterfaceOrientationMaskAllButUpsideDown =
(UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft |
UIInterfaceOrientationMaskLandscapeRight),
} UIInterfaceOrientationMask;
Using shouldAutorotateToInterfaceOrientation: method:
-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
return UIInterfaceOrientationIsLandscapeRight(toInterfaceOrientation);
}
Using supportedInterfaceOrientations method:
-(NSUInteger)supportedInterfaceOrientations{
return UIInterfaceOrientationMaskLandscapeRight;
}
These are the added methods to UIViewController regarding Orientation in iOS6
UIViewController preferredInterfaceOrientationForPresentation
UIViewController shouldAutorotate
UIViewController supportedInterfaceOrientations
Added methods to UIApplication regarding Orientation in iOS6
UIApplication supportedInterfaceOrientationsForWindow:
UIInterfaceOrientationMask
Try this:
#import <objc/message.h>
if(UIDeviceOrientationIsLandscape(self.interfaceOrientation)){
if ([[UIDevice currentDevice] respondsToSelector:#selector(setOrientation:)])
{
objc_msgSend([UIDevice currentDevice], #selector(setOrientation:), UIInterfaceOrientationPortrait );
}
}
You should place
[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications];
in your AppDelegate didFinishLaunchingWithOptions Method.
Then, anywhere in your application you can get the current orientation with:
UIDeviceOrientation orientation = [[UIDevice currentDevice] orientation];
And test orientation with:
UIInterfaceOrientationIsPortrait(orientation)
UIInterfaceOrientationIsLandscape(orientation)
as, like
if (UIDeviceOrientationIsLandscape([UIDevice currentDevice].orientation))
{
// code for landscape orientation
// OR
[[UIDevice currentDevice] setOrientation:UIInterfaceOrientationLandscapeRight];
// OR
[[UIDevice currentDevice] setOrientation:UIInterfaceOrientationLandscapeLeft];
}
else if (UIDeviceOrientationIsPortrait([UIDevice currentDevice].orientation))
{
// code for Portrait orientation
// OR
[[UIDevice currentDevice] setOrientation:UIInterfaceOrientationPortraitUpsideDown];
// OR
[[UIDevice currentDevice] setOrientation:UIInterfaceOrientationPortrait];
}
This code is for iOS 8 or later
NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationLandscapeLeft];
[[UIDevice currentDevice] setValue:value forKey:#"orientation"];
Try this...It worked out for me...
UIWindow *window = [[UIApplication sharedApplication] keyWindow];
UIView *view = [window.subviews objectAtIndex:0];
[view removeFromSuperview]; [window addSubview:view];
#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;
}
A little modification to Bissy's answer, if you want to avoid using Runtime Library:
if (UIDeviceOrientationIsLandscape([[UIDevice currentDevice] orientation]))
{
if ([[UIDevice currentDevice] respondsToSelector:#selector(setOrientation:)])
{
int orientationPortrait = UIInterfaceOrientationPortrait;
NSMethodSignature *sig = [[UIDevice currentDevice] methodSignatureForSelector:#selector(setOrientation:)];
NSInvocation* invo = [NSInvocation invocationWithMethodSignature:sig];
[invo setTarget:[UIDevice currentDevice]];
[invo setSelector:#selector(setOrientation:)];
[invo setArgument:&orientationPortrait atIndex:2];
[invo invoke];
}
}
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).
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)];
}
if (self.interfaceOrientation != UIInterfaceOrientationLandscapeRight) {
// http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation
// http://openradar.appspot.com/radar?id=697
// [[UIDevice currentDevice] setOrientation: UIInterfaceOrientationLandscapeRight]; // Using the following code to get around apple's static analysis...
[[UIDevice currentDevice] performSelector:NSSelectorFromString(#"setOrientation:") withObject:(id)UIInterfaceOrientationLandscapeRight];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
// Return YES for supported orientations
return NO;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return interfaceOrientation == UIInterfaceOrientationPortrait
|| interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown ;
}
This works for me on Xcode 6 & 5.
- (BOOL)shouldAutorotate {return YES;}
- (NSUInteger)supportedInterfaceOrientations {return (UIInterfaceOrientationMaskPortrait);}
Its interesting how others didn't run to problems after not setting it like this :
+ (void)setOrientation:(UIDeviceOrientation)orientation {
[UIDevice.currentDevice setValue:#(orientation) forKey:#"orientation"];
[UIViewController attemptRotationToDeviceOrientation];
[UIDevice.currentDevice setValue:#(UIDeviceOrientationUnknown) forKey:#"orientation"];
}
My requirement was to be able to force orientation and then again rotate to device natural orientation... there is UIDeviceOrientationDidChangeNotification that can get you de information to witch orientation to rotate device back but actually it will partly not work if you don't set to unknown immediately after you changed orientation in UIDevice, also there are more details to make it cool but will leave it, as it is out of context of this simple question.
Related
I want to force portrait mode in 2 viewController and 1 viewController with landscape mode,
I have tried older technique , but those are not working in ios9
It's more than likely that you've got some allowed orientations defined in your info.plist. You should check there and remove any entries, as I believe these will override any other values in the project.
You should then be able to set the orientation on each VC with something like:
-(NSUInteger)supportedInterfaceOrientations{
return UIInterfaceOrientationMaskLandscapeRight;
}
-(BOOL)shouldAutorotate {
return NO;
}
I think the key you need to is Supported interface orientations.
You can set the orientation of the viewcontroller from Xib/Storyboard as each viewcontroller have the property "orientation"
and implement method given below
-(BOOL)shouldAutorotate
{
return NO;
}
You can set orientation as bellow in your viewDidAppear method
NSNumber *value = [NSNumber numberWithInt:UIInterfaceOrientationPortrait];
[[UIDevice currentDevice] setValue:value forKey:#"orientation"];
My game is implemented in a single SKScene object. A button (SKSpriteNode) lets the user switch from landscape to portrait mode. Well, it should. But I can't make this work. There are many discussions on this but they are all rather complicated and give suggestions that are completely different.
So.... What is the easiest way to make a button in an SKScene that changes the orientation to portrait or landscape?
Any suggestions are appreciated.
Here is a short, concise, complete answer to the question I posted.
In xcode, select File->New->Project->IOS->Application->Game to generate a default app framework for a game for IPad using SpriteKit with ObjectiveC. This is the classic HelloWorldApp where spinning airplanes appear whenever you touch the screen.
In Targets->DEploymentInfo->DeviceOrientation, checkmark Portrait and LandscapeLeft
Modify shouldAutorotate for the view controller like so...
- (BOOL)shouldAutorotate
{
int currentOrientation = (int)[[UIDevice currentDevice] orientation];
if (scene.orientation != currentOrientation) {
// Rotate the device back to orginial orientation
[[UIDevice currentDevice] setValue:
[NSNumber numberWithInteger: scene.orientation]
forKey:#"orientation"];
return NO;
}
return YES;
}
change the body of touchesBegan in your gameScene class like so...
-(void) touchesBegan:(NSSet*)touches withEvent:(UIEvent*)event {
/* Called when a touch begins */
NSLog(#"%d", self.orientation);
if (!self.orientation || self.orientation == UIInterfaceOrientationPortrait) {
self.orientation = UIInterfaceOrientationLandscapeLeft;
} else {
self.orientation = UIInterfaceOrientationPortrait;
}
[[UIDevice currentDevice] setValue:
[NSNumber numberWithInteger: self.orientation]
forKey:#"orientation"];
the app will then hange orientation on each tap.
I want to support iOS 6 rotation. Trouble is, I've been looking through a lot of documentation and stack overflow questions but have not found any even slightly in depth solutions. I've only seen that I should add these two methods to my view controller classes - however, if I'm not mistaken, they do not operate in the same way as the pre iOS 6 methods:
- (BOOL)shouldAutorotate
{
return YES;
}
- (NSUInteger)supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskAll; // use what is appropriate for you.
}
My app currently rotates in pre-iOS6 using the following code. Note that I use the interface orientation parameters to determine whether or not I'm going to push my view Controller. How do I implement this in the iOS 6 rotation delegates?
-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
UIInterfaceOrientation toOrientation = self.interfaceOrientation;
if ( self.tabBarController.view.subviews.count >= 2 )
{
UIView *tabBar = [self.tabBarController.view.subviews objectAtIndex:1];
if(toOrientation != UIInterfaceOrientationLandscapeLeft && toOrientation != UIInterfaceOrientationLandscapeRight)
{
CUSTOM_DEBUG_LOG("\n\nRotated back to Portrait");
tabBar.hidden = FALSE;
}
}
}
- (void) willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation duration:(NSTimeInterval)duration
{
if (interfaceOrientation == UIInterfaceOrientationLandscapeLeft || interfaceOrientation == UIInterfaceOrientationLandscapeRight)
{
CUSTOM_DEBUG_LOG("\nView going landscape");
ScrollViewController *s = [[ScrollViewController alloc] initWithNibName:#"ScrollViewController" bundle:nil];
[self.navigationController pushViewController:s animated:NO];
[s release];
self.tabBarController.tabBar.hidden = YES;
self.navigationController.navigationBar.hidden = YES;
}
}
Checkout this and this SO discussion.
[EDIT]
Yes the methods you mentioned aren't deprecated in iOS 6.0 and they will continue working. It's just the way Auto Rotation works have been changed. So far it was view controllers responsibility to decide whether they rotate or not but now RootViewController will decide whether their children should rotate or not. If you don't have rootviewcontroller setup then you have to add it to window and then put shouldAutoRotate and supportedInterfaceOrientations methods in the rootviewcontroller.
Parent Views now handle rotation in iOS 6. Subclass your nav controllers and add a bool
- (BOOL)shouldAutorotate {
return YES;
}
- (NSUInteger)supportedInterfaceOrientations {
return UIInterfaceOrientationMaskPortrait; // your rotation here
}
I may not have implemented the iOS6 rotation code correctly when I first posted the question.
I incorrectly thought that the willAnimateRotationToInterfaceOrientation function was deprecated in iOS6, leading me to believe that there was a new iOS rotation delegate with an orientation parameter. Turns out this is not the case, so my app sort of works.
The code I plugged into my app was just this:
- (BOOL)shouldAutorotate
{
return YES;
}
- (NSUInteger)supportedInterfaceOrientations
{
return (UIInterfaceOrientationMaskPortrait | UIInterfaceOrientationMaskLandscapeLeft | UIInterfaceOrientationMaskLandscapeRight);
}
If you are using a UINavigationController, override shouldAutomaticallyForwardRotationMethods = YES property.
Then like Mark S said, also override shouldAutorotate and supportedInterfaceOrientations for the children VCs.
Does anyone know how to set the interface orientation for the ZBar SDK? I need it to work in landscape view and not portrait. I tried adding [reader shouldAutorotateToInterfaceOrientation:UIInterfaceOrientationLandscapeRight];but it didn't work. Any ideas?
Create a wrapper class around ZBarReaderView and add the iOS 6 methods:
-(BOOL) shouldAutorotate
{
return NO;
}
-(NSUInteger) supportedInterfaceOrientations
{
return UIInterfaceOrientationMaskLandscape;
}
Then use the class you created over the built in ZBar one, make sure you keep the old iOS 5 methods in the same controller:
- (BOOL)shouldAutorotateToInterfaceOrientation (UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationLandscape);
}
and also:
self.reader.supportedOrientationsMask = ZBarOrientationMask(UIInterfaceOrientationMaskLandscape);
I know it's late, but I just got around to doing this myself for iOS 6.
I got the same issue and resolved it symply !
I just needed to call :
[reader willRotateToInterfaceOrientation: toInterfaceOrientation duration: duration];
within the willRotate... of the view controller that contains the ZbarReaderView.
I'm not sure exactly what you mean but maybe this help you ...
[[UIApplication sharedApplication] setStatusBarOrientation: UIInterfaceOrientationLandscapeLeft animated:NO];
or
[[UIDevice currentDevice] setOrientation:UIInterfaceOrientationLandscapeLeft];
I need to change the image background of a View depending on the orientation. For this, I am using the statusBarOrientation approach in viewWillAppear:
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
UIInterfaceOrientation currentOrientation = [[UIApplication sharedApplication] statusBarOrientation];
if (UIInterfaceOrientationIsPortrait(currentOrientation)) {
NSLog(#"PORTRAIT");
} else if (UIInterfaceOrientationIsLandscape(currentOrientation)) {
NSLog(#"LANDSCAPE");
}
}
The problem is that the console is always showing PORTRAIT, even when the iPad is held in landscape mode. The same code in viewDidAppear works correctly, but there is too late and the user can see the change of images. That makes me think that the correct state of statusBarOrientation is still not available in viewWillAppear, but I have read in some other questions that this code should work there.
Try
int type = [[UIDevice currentDevice] orientation];
if (type == 1) {
NSLog(#"portrait default");
}else if(type ==2){
NSLog(#"portrait upside");
}else if(type ==3){
NSLog(#"Landscape right");
}else if(type ==4){
NSLog(#"Landscape left");
}
You shouldn't be using the statusBarOrientation to determine the current orientation of the application. According to Apple's doc: http://developer.apple.com/library/ios/#DOCUMENTATION/UIKit/Reference/UIApplication_Class/Reference/Reference.html
The value of this property is a constant that indicates an orientation of the receiver's status bar. See UIInterfaceOrientation for details. Setting this property rotates the status bar to the specified orientation without animating the transition. If your application has rotatable window content, however, you should not arbitrarily set status-bar orientation using this method. The status-bar orientation set by this method does not change if the device changes orientation.
Try using the interfaceOrientation property of a UIViewController to get the orientation of the current application.
Here is a useful code snippet for logging the device's interfaceOrientation:
NSArray* orientations = #[ #"nothing", #"UIInterfaceOrientationPortrait", #"UIInterfaceOrientationPortraitUpsideDown", #"UIInterfaceOrientationLandscapeLeft", #"UIInterfaceOrientationLandscapeRight”];
NSLog(#"Current orientation := %#", orientations[self.interfaceOrientation]);
Hope this helps someone out!