Called when an unwind segue action wants to search a container's children for a view controller to handle the unwind action.
- iOS 6.0–9.0Deprecated
- tvOS 9.0–9.0Deprecated
The action that triggered the unwind action.
The view controller that is the source of the unwinding action.
The object that initiated the action.
The view controller that wants to handle the unwind action.
A custom container view controller should override this method and use it to search its children for a view controller to handle the unwind action. It does this by invoking the
canPerformUnwindSegueAction:fromViewController:withSender: method on each child. If a view controller wants to handle the action, your method should return it. If none of the container's children want to handle the unwind action, invoke the super’s implementation and return the result of that method.
Called just before releasing the controller's view from memory.
Called when the controller's view is released from memory.
A Boolean value indicating whether the view should underlap the status bar.
Returns the header view to transition during an interface orientation change.
Returns the footer view to transition during an interface orientation change.
Convenience property that provides the current orientation of the interface, meaningful only if the view controller is taking up the full screen.
The controller for the active presented view'that is, the view that is temporarily displayed on top of the view managed by the receiver.
Indicates the lowest vertical extent for your onscreen content, for use with Auto Layout constraints.
Indicates the highest vertical extent for your onscreen content, for use with Auto Layout constraints.
A boolean value that indicates whether the view controller is configured to display banner ads.
The originally configured content view of the view controller before banner ads were enabled.
A boolean value that indicates whether the view controller is displaying a full-screen ad.
A boolean value that indicates whether the view controller is displaying a banner ad.
Prepares the iAd framework to display interstitial ads, which may involve prefetching ad assets.
Determines whether interstitials should be presented at all and whether the framework or app should manage the presentation.