# Deprecated symbols Symbols that view controllers no longer support. ## Topics ### Deprecated methods [`func setOverrideTraitCollection(UITraitCollection?, forChild: UIViewController)`](/documentation/UIKit/UIViewController/setOverrideTraitCollection(_:forChild:)) Changes the traits assigned to the specified child view controller. [`func overrideTraitCollection(forChild: UIViewController) -> UITraitCollection?`](/documentation/UIKit/UIViewController/overrideTraitCollection(forChild:)) Retrieves the trait collection for a child view controller. [`class func attemptRotationToDeviceOrientation()`](/documentation/UIKit/UIViewController/attemptRotationToDeviceOrientation()) Attempts to rotate all windows to the orientation of the device. [`func registerForPreviewing(with: any UIViewControllerPreviewingDelegate, sourceView: UIView) -> any UIViewControllerPreviewing`](/documentation/UIKit/UIViewController/registerForPreviewing(with:sourceView:)) Registers a view controller to participate with 3D Touch preview (peek) and commit (pop). [`func unregisterForPreviewing(withContext: any UIViewControllerPreviewing)`](/documentation/UIKit/UIViewController/unregisterForPreviewing(withContext:)) Unregisters a previously registered view controller identified by its context object. [`- (BOOL) automaticallyForwardAppearanceAndRotationMethodsToChildViewControllers;`](/documentation/UIKit/UIViewController/automaticallyForwardAppearanceAndRotationMethodsToChildViewControllers) Returns a Boolean value that indicates whether appearance and rotation methods are forwarded. [`func canPerformUnwindSegueAction(Selector, from: UIViewController, withSender: Any) -> Bool`](/documentation/UIKit/UIViewController/canPerformUnwindSegueAction(_:from:withSender:)) Called on a view controller to determine whether it wants to respond to an unwind action. [`- (void) didAnimateFirstHalfOfRotationToInterfaceOrientation:(UIInterfaceOrientation) toInterfaceOrientation;`](/documentation/UIKit/UIViewController/didAnimateFirstHalfOfRotationToInterfaceOrientation:) Sent to the view controller after the completion of the first half of the user interface rotation. [`func didRotate(from: UIInterfaceOrientation)`](/documentation/UIKit/UIViewController/didRotate(from:)) Sent to the view controller after the user interface rotates. [`- (void) dismissModalViewControllerAnimated:(BOOL) animated;`](/documentation/UIKit/UIViewController/dismissModalViewControllerAnimated:) Dismisses the view controller that was presented by the receiver. [`func dismissMoviePlayerViewControllerAnimated()`](/documentation/UIKit/UIViewController/dismissMoviePlayerViewControllerAnimated()) Dismisses a movie player view controller using the standard movie player transition. [`func forUnwindSegueAction(Selector, from: UIViewController, withSender: Any?) -> UIViewController?`](/documentation/UIKit/UIViewController/forUnwindSegueAction(_:from:withSender:)) Called when an unwind segue action wants to search a container’s children for a view controller to handle the unwind action. [`- (void) presentModalViewController:(UIViewController *) modalViewController animated:(BOOL) animated;`](/documentation/UIKit/UIViewController/presentModalViewController:animated:) Presents a modal view managed by the given view controller to the user. [`func presentMoviePlayerViewControllerAnimated(MPMoviePlayerViewController!)`](/documentation/UIKit/UIViewController/presentMoviePlayerViewControllerAnimated(_:)) Presents the movie player view controller using the standard movie player transition. [`func rotatingFooterView() -> UIView?`](/documentation/UIKit/UIViewController/rotatingFooterView()) Returns the footer view to transition during an interface orientation change. [`func rotatingHeaderView() -> UIView?`](/documentation/UIKit/UIViewController/rotatingHeaderView()) Returns the header view to transition during an interface orientation change. [`func segueForUnwinding(to: UIViewController, from: UIViewController, identifier: String?) -> UIStoryboardSegue?`](/documentation/UIKit/UIViewController/segueForUnwinding(to:from:identifier:)) Called when an unwind segue action needs to transition between two view controllers. [`func shouldAutomaticallyForwardRotationMethods() -> Bool`](/documentation/UIKit/UIViewController/shouldAutomaticallyForwardRotationMethods()) Returns a Boolean value indicating whether rotation methods are forwarded to child view controllers. [`- (BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation) toInterfaceOrientation;`](/documentation/UIKit/UIViewController/shouldAutorotateToInterfaceOrientation:) Returns a Boolean value indicating whether the view controller supports the specified orientation. [`- (void) viewDidUnload;`](/documentation/UIKit/UIViewController/viewDidUnload) Called when the controller’s view is released from memory. [`- (void) viewWillUnload;`](/documentation/UIKit/UIViewController/viewWillUnload) Called just before releasing the controller’s view from memory. [`- (void) willAnimateFirstHalfOfRotationToInterfaceOrientation:(UIInterfaceOrientation) toInterfaceOrientation duration:(NSTimeInterval) duration;`](/documentation/UIKit/UIViewController/willAnimateFirstHalfOfRotationToInterfaceOrientation:duration:) Sent to the view controller before performing the first half of a user interface rotation. [`func willAnimateRotation(to: UIInterfaceOrientation, duration: TimeInterval)`](/documentation/UIKit/UIViewController/willAnimateRotation(to:duration:)) Sent to the view controller before performing a one-step user interface rotation. [`- (void) willAnimateSecondHalfOfRotationFromInterfaceOrientation:(UIInterfaceOrientation) fromInterfaceOrientation duration:(NSTimeInterval) duration;`](/documentation/UIKit/UIViewController/willAnimateSecondHalfOfRotationFromInterfaceOrientation:duration:) Sent to the view controller before the second half of the user interface rotates. [`func willRotate(to: UIInterfaceOrientation, duration: TimeInterval)`](/documentation/UIKit/UIViewController/willRotate(to:duration:)) Sent to the view controller just before the user interface begins rotating. ### Deprecated properties [`var shouldAutorotate: Bool`](/documentation/UIKit/UIViewController/shouldAutorotate) A Boolean value that indicates whether the view controller’s contents should autorotate. [`var previewActionItems: [any UIPreviewActionItem]`](/documentation/UIKit/UIViewController/previewActionItems) The quick actions displayed when a user swipes upward on a 3D Touch preview. [`var automaticallyAdjustsScrollViewInsets: Bool`](/documentation/UIKit/UIViewController/automaticallyAdjustsScrollViewInsets) A Boolean value that indicates whether the view controller should automatically adjust its scroll view insets. [`var bottomLayoutGuide: any UILayoutSupport`](/documentation/UIKit/UIViewController/bottomLayoutGuide) Indicates the lowest vertical extent for your onscreen content, for use with Auto Layout constraints. [`@property (nonatomic, readwrite) CGSize contentSizeForViewInPopover;`](/documentation/UIKit/UIViewController/contentSizeForViewInPopover) The size of the view controller’s view while displayed in a popover. [`var interfaceOrientation: UIInterfaceOrientation`](/documentation/UIKit/UIViewController/interfaceOrientation) Convenience property that provides the current orientation of the interface, meaningful only if the view controller is taking up the full screen. [`var isModalInPopover: Bool`](/documentation/UIKit/UIViewController/isModalInPopover) A Boolean value indicating whether the view controller should be presented modally by a popover. [`@property (nonatomic, readonly, nullable) UIViewController * modalViewController;`](/documentation/UIKit/UIViewController/modalViewController) The controller for the active presented view’that is, the view that is temporarily displayed on top of the view managed by the receiver. [`var searchDisplayController: UISearchDisplayController?`](/documentation/UIKit/UIViewController/searchDisplayController) The search display controller associated with the view controller. [`var topLayoutGuide: any UILayoutSupport`](/documentation/UIKit/UIViewController/topLayoutGuide) Indicates the highest vertical extent for your onscreen content, for use with Auto Layout constraints. [`@property (nonatomic, assign) BOOL wantsFullScreenLayout;`](/documentation/UIKit/UIViewController/wantsFullScreenLayout) A Boolean value indicating whether the view should underlap the status bar. --- Copyright © 2026 Apple Inc. 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